RU2362206C1 - Method of operating local network - Google Patents

Abstract

FIELD: computer engineering.

SUBSTANCE: invention relates to computer engineering and is meant for use as intelligent information technology when making a local network. In the operating state, the local network contains one switching master local network station (LNS), several switching and non-switching slave local network stations and one information transmission line or several duplicated with shared access and centralised determined management of message exchange between legitimate subscribers of all local network stations. The method is realised through composition, sending on the network, receiving from the network and breaking down two types of control frames, data frames of one type and three types of response frames. In the information process senders of types of frames and their sequence is determined taking into account status of the network, corresponding to the operating or first anomalous state, arising with simultaneous appearance in the network of more than one switching master local network station during switching, due to failure, of at least one switching slave local network station to master state.

EFFECT: improved quality of local network through intelligent composition of six types of frames.

Description

The invention relates to computer technology and is intended for use as a rational information technology in the construction of a local area network (LAN), containing in working condition one switching master station of the local network (SLS), many switching and non-switching slave SLS and one information transmission line (LPI) or several duplicated LPIs with shared access and centralized deterministic control of message exchange between valid subscribers of all SLS based on message splitting data packets (PD) and transmission of PD in information frames under the control and control of the leading SLS when implementing the information process in the LAN by compiling, sending to the network and receiving from the network and disassembling two types of control frames, information frames of the same type and three types response frames when each frame of the information process is sent to the network so that after a pause is detected, either one of two types of control frames from the leading SLS or one of three types of response frames from the addressed A SLS home or an information frame from a master or corresponding slave SLS, while the network automatically detects and eliminates the first or second anomalous state, respectively, when more than one master SLS appears on the network when at least one switching slave SLS switches to a master state due to a failure or if there is no master SLS in the network after switching it due to a failure in the state of the switching slave SLS.

In LANs with bus topology and centralized deterministic access control, for example, to two duplicated LPIs according to the “command-response” principle, each SLS contains the first and second duplicated modems, the serial outputs and inputs of which are connected respectively to the serial inputs and outputs of the first and second duplicated LPIs , equipment of terminal subscribers (in particular, telephony workstations and managed objects, such as radio stations), a subsystem, which in a difficult case is a subsystem information processing and control, containing a central processor for solving control problems, a digital signal processor for solving processing problems, a combined memory (RAM + DOS + ROM + ROM), interface devices for ensuring informational interaction of the subsystem with end users and one or more highways for exchange information between the components of the SLS in the process of exchanging SLS subscribers with the corresponding LAN subscribers with control and / or voice information packets using duplicated modems, Each of them contains a network adapter (CA) and a transceiver (PP) and is used as one of two known (see, for example, [1], [2]) LAN interface devices with bus topology and centralized deterministic access to the LPI according to the principle A “command-response”, namely, in the master SLS, is used as an interface controller — an interface control device (CI), and in each slave SLS — as an interface terminal device (CI).

As an information technology, the invention can be used, for example, in the construction of modern distributed automatic control systems (ACS) or small automation systems (SMA) based on specialized LANs designed to exchange control information and voice messages between SMA subscribers (SAS - Small Automation System ) ACS or SMA function in real time without participation and with the participation of a human operator, respectively, and are usually implemented on the basis of command-information drugs (CI-LAN - Command-Information Local Area Network [3, p. 26]), which are small ( contain up to 16-20 SLS) or medium (contain up to 32-128 SLS) specialized drugs with bus topology [3, p.15].

By definition, a medicinal product is a communication system distributed within a limited territory (a building, a laboratory, a moving object - an aircraft, a sea vessel, etc.) and supporting many high-speed digital information transmission channels, which are presented alternately by the SLS network for short-term exclusive use, see, for example, [4, p. 72].

Of the many requirements for drugs for the transmission of information (see, for example, [4, pp. 75-79]), to create a specialized drug at an acceptable cost, the following are selected as basic requirements:

- the bit rate (speed) f _b digital transmission should be selected subject to the limitation 1 MGts≤f _b ≤20 MHz depending on the amount of SLS and the possibility of having the stock performance for transmission of control and speech information using a limited length FA is not more than 512 -2048 bits in order to ensure speech tolerance to errors [5, p. 35] and to satisfy the hard traffic of speech delivery in real time with a delay of less than 200 ms to support normal telephone conversation [5, p. 25];

- the maximum delay of the frame transmission through the LAN must be deterministic, i.e. succumb to preliminary calculation;

- the frequency of detectable errors (FER) must satisfy the limitation of FER ≤10 ^-8 , which means that an error can be detected no more than once during transmission of every 100,000,000 bits;

- the reliability of the drug should be such that it should not be inoperative for more than 0.02% of the total working time, which is approximately 20 minutes of downtime per year for an institutional system and 2 hours of downtime per year for a continuously functioning system.

It should be noted that the device and architecture of the modern SLS and the modern modem have much in common [6, p. 84, Fig. 3.1. Variant of the structure of a modern modem; 7, p.30, fig. 2.1. The generalized structural diagram of a modern modem], and in some cases, a certain difficulty is the question of the functional and physical division of the SLS into its components [2, p. 85]. According to modern concepts, in the case of monopoly capture of the LPI of one SLS to transmit information to another SLS, a communication channel is formed between them (a segment of LPI connecting the data of the SLS) so that these SLS and the communication channel form a typical data transmission system for the time of transmission [7, p.10, Fig. 1.1], moreover, (CA + PP) of each SLS form a modem (modem processor), which is a synonym for data channel equipment (the international term DCE - Data Communications Equipment), and the remainder of each SLS (ie subsystem and end users) represents terminal equipment yes GOVERNMENTAL (DTE - international term DTE - Data Terminal Equipment) - a generic term used to describe the respective recipient and / or sender information. In the simplest cases, the OOD may contain a sensor of the output signals of the state of the control object and / or a receiver of input signals of control of the control object. In more complex cases, a complex subsystem of information processing and control or a personal computer with peripheral equipment of terminal subscribers connected to it can act as an OOD [7, p. 9]. Therefore, depending on the variant of the structure of the SLS subsystem (from a simple sensor and / or information receiver to a complex subsystem of information processing and terminal equipment control) in the process of information interaction between the SA and the subsystem [2, p. 85 Fig. 2.14. Classification of MK terminals] one or more types of accesses must be provided, defined by the following six possible types of CA access to the corresponding part of the combined memory of the subsystem (FIFO buffer, double buffered memory, random access memory (RAM), dual-port RAM, etc.): direct access for reading and / or writing; read-only direct access; direct access for recording only; buffered read and / or write access; read-only buffered access; buffered write-only access.

In LANs with a bus topology, SLS and their subscribers have individual and group addresses and are physically connected to each other through shared-access LPIs. Therefore, in such a LAN, the problem of the rational use by all SLS of the common first and / or second duplicated LPI for exchange between subscribers of information that is transmitted in time-division frames with bit-by-bit synchronization of the exchange between the sender of the frame determined by the individual address of the SLS and the address of its subscriber is very significant sender, and the recipient of the frame, defined by the individual or group address of the SLS and the address of its subscriber of the recipient, and the frames are separated by pauses (periods unemployment LPI), during which no symbols are transmitted through LPI. The pause duration is at least 4 · T _b [1, p.16], and its average duration Tp is estimated by the value

where T _b = 1 / f _b is the period of the bit frequency f _{b the} transmission of digital information in the frame by a sequential encoded signal.

A typical structure of an information frame (IR) [8, p. 85, fig. 3.1; 9, p. 40, fig. 1.22; 10, p. 151, fig. 2.21; 11, p. 57, fig. 3.1; 12, p.113, fig.2.21 b, c, d] contains at least four code fields transmitted sequentially in the enumerated order (SK-start combination, SI-service information, PD data packet and SCS checksum word ) continuous synchronous bit stream, and has the form

moreover, the SI field may contain the field of the AO address of the sender, the field of the AP address of the recipient and the field of the UI control information and have the form

the SC field can be reduced to one single start bit-flag of the beginning of the frame [11, p. 57] or contain a preamble to ensure the setting of bit synchronization of the SLS decoder and the flag of the beginning of the frame [10, p. 153, Fig. 2.22; 12, p.113, Fig.2.21]; the UI field generally indicates the frame number, its type (simple frame for one recipient or group frame for a group of recipients), frame number, size, delivery route, what the recipient needs to do with it, etc .; SCS field - SCS code is calculated according to the corresponding cyclic redundancy check (CRC) algorithm for all previous fields of the frame except the SK field.

If the PD field is excluded from (2), the frame becomes a control frame (CC) for the recipient, for example, for initiating the receiver to transmit IR with the appropriate parameters or for transmitting a “marker (relay, baton)” of access control from the active SLS to another SLS, which after receiving a “marker” becomes active (ie, has the right of access to the LPI for transmitting CC, IR, etc.), or a response frame (OK), for example, to confirm receipt of the CC or IR. In the general case, the UK or OK has the form

moreover, in some cases, as the SCS field in (4), the p-bit of the SI code parity check can be used, i.e. p = 1 (or 0) with an even (or odd) number of units in the SI code [2, p. 95, fig. 2.17].

Useful work (efficiency) of a medicine consists in exchanging messages between subscribers of a medicine, which during transmission are divided into parts (packets) and transmitted as PD using IR sequences. Therefore, the time required to pause T _n (1), SC, SR and IC SCS (2) and {CK, SI, SKS} in (4), accompany the transmission of each AP, represent overhead. Typically, the size of the PD is programmed in the corresponding field of the MD. In this regard, in the process of implementing IR (2) transmission, it is logical to evaluate the quality of the way specialized pharmaceuticals work using the resulting overhead number of bit intervals spent on transmitting one AP (NKBI)

defined by overhead, whose components are the arguments of function (5) of six variables. From (5) it follows that the quality of the method of operation of drugs is the higher, the less NKBI (5).

Currently, taking into account [2, p. 75-76; 4, p. 15-17; 9, p. 42-54; 11, p. 65-72; 12, p.168-172], we can distinguish four of the following main methods of access of SLS to the general LPI:

collective random access (rivalry) method;

a method of deterministic decentralized access with the transfer of a “marker (relay or baton)” along a logical ring;

the method of centralized deterministic access control by the principle of "command-response";

combined access method, which is a combination of the corresponding previous three methods.

In random access LANs, all SLSs are equal and, if LPIs are idle, each SLS can transmit through a time delay, counted according to some algorithm from the start of pause detection. In the described case, acceptable communication quality is provided only at loads no higher than 30-40% (i.e. LPI is rationally used no more than 30-40% of the time). With a greater load, access collisions to the LPI of various SLS become too frequent and the so-called collapse (collapse of the LS) occurs, which represents a sharp decrease in productivity. Therefore, at present, when building self-propelled guns or SMA that perform tasks of managing distributed control objects in real time, where a quick response to external events is required, random access drugs are rarely used due to the lack of guarantee of delivery time to the recipient, as well as the difficulty of implementing priority access [3, p.16; 11, p. 67].

In LANs with bus topology and deterministic decentralized marker (relay) access, only one active SLS is eligible to transmit infrared, which is currently the holder of the "marker".

In case of unavailability or after transmission of the IR, the active SLS immediately generates an AC and transmits a “marker” along the corresponding route to another SLS. The disadvantage of this method is the difficulty in developing an effective algorithm for the “marker” route, the overhead of transmitting the AC for transmitting the “marker”, and the possibility of losing the “marker” due to a hardware failure when the AC was damaged during transmission and became unrecognizable. To restore performance when the marker is lost, the drug must contain a special device responsible for the presence of a “marker” in the LPI and monitoring the transmission path of frames in the logical ring. In real-time systems, the marker method over the random access method has an obvious advantage, since here each SLS is guaranteed the access time value determined by the deterministic algorithm of the “marker” transmission route.

A LAN with a bus topology and centralized deterministic access control to the LPI on the basis of a “command-response” principle contains one master SLS, and the remaining SLS are slave. In this case, the leading SLS with the help of the Criminal Code on a certain specific route polls successively slaves SLS and with the help of OK finds out the readiness of the polled SLS for both receiving and sending IR. Then, the leading SLS by the appropriate CC allows one SLS to send IR, and the other to receive IR. Further, under the control of the leading SLS, the interrogation of the slave SLS and the sending of the IR from any SLS to another will continue continuously according to the determinate algorithm of the polling and transmission route taking into account priorities. The advantage of drugs with centralized access control on a “command-response” basis is the maximum simplification of slave SLS, the subsystems of which are used simple devices, for example sensors, actuators that are not able to initiate exchange initialization in the LAN [2, p. 76]. The disadvantage of this drug is the complexity of the software leading SLS, as well as the problem of ensuring reliability, since the failure of the leading SLS leads to a failure of the drugs.

It should further be said that since about the 80s of the 20th century, the architecture (a set of interacting hardware and software of system and application software) of any (local or global) information network is built and developed taking into account the model of interaction of open systems (OSI model - Open System Interconnection), which has seven levels: applied, representative, session, transport, network, channel, physical [10, p. 66-74]. A full description of the OSI model takes more than 1000 pages of text, but an analysis of numerous fragments of its description [5; 8-15] allows us to conclude that the OSI model operates as two pipelines for receiving, processing and sending information at each level so that the technological process for receiving, processing and sending information in the first pipeline is directed from the upper levels to the lower, and in the second pipeline, on the contrary, from lower to upper levels.

The ISO model allows information interaction between the sender and the receiver of IR information interaction using the datagram method or the method with a logical connection [11, p. 88-90].

According to the datagram method, when ready, the sender transmits the IR without ascertaining the receiver's readiness. The disadvantages of the method are the possibility of losing the IR, as well as the useless work of the sender in case of unavailability or absence of the recipient.

According to the logical connection method, IR is transmitted only after a logical connection (communication channel) between the sender and the receiver is established using the CC and OK. According to this method, the transmission of each IR is accompanied by the transfer of several CCs and OKs with the possibility that the sender repeats the IR transmission when the receiver does not confirm receipt of the IR.

In addition, in order to apply the ISO model to drugs, the IEEE committee in the IEEE802 project performed further decomposition of the channel and physical layers [8, p. 16, Fig. 1.1a), b), c); 12, p.167, Fig.3.3] so that the channel level contains a logical link control sublayer (ULS) for performing the functions of transmitting frames between the SLS, establishing a logical connection and error control and a transmission medium access control (UDS) sublayer for performing functions addressing the SLS and algorithms for access to the LPI, and the physical layer contains the following three sublevels:

- transmitting (sending and / or receiving) physical signals (SFC) to perform the function of a bi-directional serial bit-wise interface, i.e. encoding the sent serial frame code and decoding the received serial frame code;

- an interface with an interface module (IMS), which is a cable with connectors that allows you to place the SLS at a certain distance from the power supply line, and the cable can end with connectors with the SFC and MDS [8, p.16, Fig.1.1 b)] or can be rigidly connected with PPS and MDS and have one connector in the cable break [8, p.16, Fig.1.1 c)];

- medium access module (MDS) for performing the function of matching with the characteristics of the LPI parameters of the signals received at the MDS from the SFC through the IMS, i.e. the corresponding MDSs provide the use of a certain SFC with various types of LPI.

In modern SLS, the sublevels of ULZ, UDS, and PPS are implemented using SA [11, p. 78-80; 12, p.236-238] for a set of rules and procedures governing the exchange of information between CAs and LPI and SLS memory, taking into account all types of frames (2) and (4). Therefore, the way the LAN works actually determines the mechanism of information exchange between all subscribers of the network, in each SLS of which the CA is the main invariant part, without which the network is impossible [11, p. 78-80].

Analysis of scientific, technical and patent information [9, p.30-36; 10, p. 132-144; 11, p. 47-54; 12, 54-70; 15, p. 28-34; 16, p. 110-120; [17, p.190-196] shows that an acceptable implementation in the SA of the SFC sub-layer (encoding of sent and decoded received frames) is an almost independent and relevant technical task.

For what follows, for X belonging to the set {I, Y, O}, we introduce the following notation:

OZ and IZ — formed during the operation of the SLS analog signals (electrical or optical) at the output and input of the PCB, respectively connected to the input and output of the LPI;

OKHK - the frame code (2) or (4) contained in the SLS memory, ready for sending to the network through the converter-encoder CA and the transmitter PP;

IXK is the code of the received frame (2) or (4) loaded into the SLS memory, which is generated at the output of the CA decoder-converter in the form of a parallel-serial code in the process of the decoder-converter performing the operation of multi-stage decoding of the input signal IZ, which is transmitted to the decoder-converter through the PC .

In the process of sending a frame, coding (conversion of OXK to OZ) is carried out through the conveyor using three stages. At the first stage, the OCC is converted into a parallel-serial code. At the second stage, the parallel-serial OXC code is converted to the simplest NRZ (Non Return Zero) code without returning to zero, which is a regular sequential frame code when transmitting with a bit frequency f _b = 1 / Т _b , where Т _b is the period of the code bit synchronization NRZ. In the third stage, the NRZ code is subjected to analog coding or linear digital coding (or modulation).

When constructing drugs, analog NRZ code coding is rarely used because of the high complexity of coding and decoding equipment [11, p. 54], and most often linear digital coding is used, as a result of which a single-bit OZO (or two-bit OZ) is generated at the output of the converter-encoder (0: 1)) serial coded signal for receiving a two-level (or three-level) electric or optical signal OZ at the output of the PP for connecting an electric (twisted pair or coaxial cable) or fiber to the power supply line o-optical (fiber optic cable), respectively.

In the process of receiving an analog signal IZ with linear digital coding, the PP generates an output single-bit OZ0 (or two-bit OZ (0: 1)) serial digital encoded signal, converted by the decoder-converter CA into a parallel-serial code of the received IXK frame, which can be loaded into memory SLS.

As is known [17, p.190], in order to ensure reliable decoding of the signal by the SLC receiver, the SLC sender should send the frame as a sequential often changing encoded single-bit OZ0 (or two-bit OZ [0: 1]) signal, which ideally varies in each bit interval .

Currently, of the many known linear codes (see classification in [16, p. 111, Fig. 8.10]) of two-level codes, codes of class 1B2B and block codes of class mBnB (where m and n are integers, satisfying the condition n> m≥2), in particular, 4V5V is used in FDDI and 100 BaseFX / TX, 5V6V is used in 100VG-AnyLAN; 8В10В - in 1000 BaseSX / LX / CX [15, p. 28].

To compare the classes of codes, you can enter the coding quality indicator (PAC), determined by the ratio

Where

f _k - frequency (speed) of transmission of the encoded bits of the frame (2) or (4);

f _b - bit rate of the transmission of the original bits of the frame (2) or (4) of the NRZ code.

Based on (6), taking into account the requirements for the LPI bandwidth, we can say that the smaller the GAC, the better the code.

Class 1B2B codes have PAC = 2 and are widely used due to the high noise immunity and ease of conversion (encoding or decoding) due to the fact that the information transmission frequency of each of them f _k = 2 · f _b is twice as high as f _b , since it is formed class 1B2B code in the process of converting the NRZ code so that in each bit interval (period) T _b each bit “0” or “1” of the NRZ code is encoded according to the corresponding rule with conversion to two bits of the 1B2B code, each of which is transmitted during the period encoding T _k = T _b / 2. However, for the useful qualities of the code of this class (high noise immunity and ease of conversion, for example, in comparison with the 4V5V code) you have to pay by expanding the bandwidth of the LPI, i.e. The advantage of the 1B2B code is also its drawback. Therefore, the appropriate code of class 1B2B is recommended to be used where frequency restrictions are not determining [17, p.193].

One of the popular codes of class 1B2B is the Manchester-2 code used, for example, in technology [1] - an analogue of MIL-STD-1533. The conversion (encoding or decoding) operation using this code can be described by the Manchester-2 code conversion rule (PPKM-2) in the form of an expression

where the direction of the arrow to the right indicates the operator 1B / 2B encoding-converting one bit from the left to two bits on the right, and to the left - the operator 2B / 1B decoding-converting two bits from the right to one bit on the left.

In addition, in technology [1] for 3 · T _{b, the} one-bit flag CK1 of the starting combination of any frame or the one-bit flag CK2 of the beginning of the j-th 16-bit data word for j = 1, ..., 32 in the field of the frame frame (2) with sending (encoding) and receiving (decoding) are described by the rule for converting a distorted Manchester code (PIMC) in the form

where the direction of the arrow to the right indicates encoding when transmitting the single-bit flag SK1 (or SK2) to the code 111000 (or 000111), and to the left - to decoding when receiving the code 111000 (or 000111) into the single-bit flag SK1 (or SK2).

In modern conditions, to create drugs with determining frequency restrictions, you can use the 4V5V conversion with double redundancy at PAC = 1.25 or conversion using bit stuffing.

4B5V transformations are carried out according to the well-known rule [15, p.29, Table 1.1], which contains 4V / 5V encoding - converting every four 4V bits to five 5V bits and 5V / 4V decoding - converting every service or authorized five 5V bits, respectively, into one bit and four 4V bits.

One encoding of a 4V / 5V OXK frame with conversion to a serial NRZ code (4B / 5B (OXK)) was not enough to obtain an acceptable self-synchronizing digital signal IZ0. Therefore, finally, the digital signal OZ0 of the transmitted OXC frame is generated using the NRZI (Non Return to Zero with ones Inverted) operator of potential coding with inversion at unity according to the expression

Using bit stuffing in the process of encoding an OXK frame, additional unit bits are first inserted into the NRZ serial code, each of which is inserted after the NRZ (OXK) serial code detects the following in a row, for example, every four zero bits, and from the resulting serial code F ( NRZ (OXK)) the digital signal OZ0 is generated using the NRZI operator according to the expression

where F is the operator of inserting bit stuffing into the serial code NRZ (OXK).

In the process of generating a serial digital signal OZO according to (9.1) or (9.2), the NRZI operator works so that the value of the bit OZ0 (t + 1) in each subsequent period of the discrete time (t + 1) is determined by the values of the bits OZ0 (t) and Z ( t) = NRZ (4B / 5B (OXK) or Z (t) = F (NRZ (OXK)) in the current discrete time period “t” with the initial condition OZ0 (0) = 0 by the logical formula

where $ is the exclusive OR operator in ABEL.

When decoding a digital signal IZ0, the process of disassembling a received IXK frame (writing fragments of a parallel-serial IXK frame code to the SLS memory) during conversion using 4B5V takes the form

and when converting using bit stuffing, it looks like

Where

! NRZ is the conversion operator in (11.1) of the serial code NRZ [5B / 4B (! NRZI (IZ0)) or in (11.2) of the serial code NRZ [! F (! NRZI (IZ0)) of the received frame into a parallel-serial code with writing IXK in memory of SLS;

5B / 4B - operator for converting 5-bit sequences of a sequential code (! NRZI (IZ0) into four-bit sequences;

! F is the operator for deleting the stuffing bit, which consists in removing from the serial code! NRZI (IZ0) every single bit detected after every four zero bits after the next in succession;

! NRZI is the inverse operator to the NRZI operator, generating a signal Z0 (t) =! NRZI (IZ0 (t)) of the serial code according to the formula

Where

t≥1 - period of discrete time;

IZ0 (t-1) - input signal IZ0 (t) delayed by one clock cycle.

The coding algorithm {(9.1), (10)} of the OKH frame allows one to generate a digital sequentially acceptable self-synchronizing signal (9.1), in which more than three “0” or “1” never occur in a row [14, p. 117]. The main disadvantage of the algorithm {(9.1), (10), (11.1), (12)} using the 4B5B transform is the complexity of the technical implementation of the encoder and decoder [14, p.114].

The algorithm {(9.2), (10), (11.2), (12)} using bit stuffing is relatively simple in technical implementation, however, in terms of the quality of self-synchronization compared to {(9.2), (10), (11), ( 12)} it is less acceptable, since during the formation of a self-synchronizing signal (9.2), five “0” or “1” can occur in a row in it.

It is known [9, p. 260-263; 17, p.194-196] there are only two three-level codes, each of which with PAC = 1.0 has the property of ideal self-synchronization, since it provides signal coding with a guaranteed change of levels between adjacent bit intervals. In our opinion, if it is possible to transmit a three-level OZ signal through an LPI, it is possible to use for building drugs, for example, the high-speed three-level code (VTK) proposed in [9, pp. 260-263], which guarantees a change in the level of the transmitted OZ signal at the PC output so that the logical “0” is transmitted by the minimum signal level OZ or the next average level after it, and the logical “1” is transmitted by the maximum signal level OZ or the next average level after it. In the described case, the code signal Z (0: 1), direct code Z (0: 1) = are formed in each bit period at the output of the converter-encoder CA and the input of the PP when sending (or the output of the PP and the input of the decoder-converter CA when receiving) in each bit period Z0Z1 which means the following:

sending (or receiving) bit "0" VTK,

sending (or receiving) bit "1" VTK,

Pause or send (or receive) the second bit “0” or “1” of the VTK after sending (or receiving), respectively (13) or (14). It follows directly from (13) - (15) that the digit digits Z0 and Z1 of the Z code (0: 1) are signs of the minimum and maximum levels of the three-level signal OZ (or IZ), respectively.

The peculiarity of the VTK algorithm {(13), (14), (15)} is that when transmitting a bit chain of the form 111 ... (or 000 ...), all output pulses of the OZ signal will have the same polarity, and the signal relative to the average level will appear constant component. This may be unacceptable when building specialized drugs. To avoid this, it is possible to apply NRZ scrambling at the input of the VTK encoder-converter and, accordingly, NRZ descrambling at the output of the VTK decoder-converter [17, p.196].

It is known [13, p. 3-10] that information is a product with all its inherent properties. In the course of technological processes of receiving, processing and sending information occurring, for example, in drugs, information (data) acts as a subject of work, on which interacting hardware and software tools of drugs, which are labor tools. Further, in [13] on p.10 a general concept is disclosed - information technology - this is, firstly, a set of processes for receiving, processing and sending information and, secondly, a description of these processes.

Taking into account the above general methodological and particular provisions, it can be said that the way of working with drugs is a technological information process (information technology) implemented in all its SLS, determined by a set of processes for collecting, distribution, transmission and switching of information flows and a description of these processes based on a detailed logical assembly when sending and disassembling upon receipt of specific types of frames of the form (2), (4), taking into account six possible options for accessing the memory of the SLS subsystem with exchange with Communication via PD between all valid subscribers PM datagrams according to the method and / or by the method of the logical connection.

In its final form, the way the drug works can become a standard of the type [1], which is essentially a guide to the construction of self-propelled guns or SMA as a whole [2, p. 64], which significantly determines the architectural decisions and software of the components of a distributed self-propelled guns or SMA.

Currently, several thousand information technologies of general application (Ethernet, Token Ring, Fibrenet, Fieldbus, Profibus, Lonworks, FDDI, 100 VG-Any LAN, etc.) and specialized technologies (MIL) are already known [3, p. 18] -1533, MIL-1773, RS422, RS485, CAN, etc.) for building distributed ACS and SMA based on drugs and more than 250 system highways, the most famous of which are EUOBUS, VME, FASTBUS, MULTINUS-I / II, P -96, SAMAS, PCI [3, p.24].

In the general case, modern distributed MCAs are automated complexes, between the subscribers of which it is required to transmit messages using PD both for automatic and automated control, and for the exchange of voice information between the respective subscribers. In this regard, to build a modern high-quality SMA, the technical problem of building the architecture of a promising specialized drug with a performance margin for real-time multichannel transmission of control information and voice messages with high reliability, low cost, ease of installation, commissioning, and maintenance is relevant.

The quality of such a promising specialized drug will be evaluated by the following vector of basic technical characteristics (VOTX)

Where

f _b - bit rate of information transmission;

KSLS - the number of SLS in drugs;

KA - the number of subscribers in each SLS;

PDPD - programmable data packet length in bits, multiple of 32;

RShD - data bus width;

COO - frequency of detected errors;

CPC - the number of frame types, determined by the way the drugs work;

NKBI - is determined by the way the medicine works and is evaluated according to (5).

We especially note that in [2] the principles of constructing distributed self-propelled guns based on serial multiplex channels (ie specialized LANs) on the basis of a modem terminal containing SA and software and performing the functions of a controller (that is, a control station) or an OS are described most fully .

It is also known [2, p. 94] that the development of the architecture of specialized drugs goes in parallel in the following two main directions:

- increase the productivity and reliability of the element base;

- improving the way the drugs work by choosing the structure and frame formats of types (2) and (4) in order to achieve higher quality drugs in the new conditions.

All of the above allows us to say that, taking into account VOTKh (16), improving the working method of specialized drugs with an effective algorithm for access to LPI by choosing the structure and size of frames of types (2) and (4), evaluated by the CPC and NKBI (5) and allowing create a CA rationally adapted for creating SLS with a variable architecture and providing all six possible types of access of the SA to the memory of the SLS subsystem in the process of exchanging its subscribers with the corresponding LAN subscribers by data packets using the datagram method or the log method In our opinion, a technical connection is an urgent technical task, since it is not advisable to use common technologies (for example, Ethernet [15, p.241-283] to create high-quality SMA because of the large redundancy for solving SMA based on one universal Medicines, and well-known specialized technologies [1] have high overhead costs and technical characteristics that do not allow constructing high-quality modern SMA on the basis of one specialized medicinal product.

Known specialized command and information drugs [3, p, 20, Fig. 1.2], containing the leading SLS on the basis of a personal computer, many slave SLS and electric field laser with bus topology. In the process of functioning, the leading SLS manages the slave SLS according to the “command-response” principle with the help of information-control personnel (IUK - [4, p.51, Table 2.2]) that are formed by the leading SLS and information-response frames that determine the working method of the LS (PKI - [4, p.52, Table 2.3]), formed by the slave SLS in the time sharing mode according to the commands of the leading SLS. The IAA and PKI formats are the same and each of them contains six bytes from zero “0V” to the fifth “5V” and has the form

Where

0B = 10101010-preamble;

1B is the address of the SLS to which the frame is addressed (17);

2B - IAA flag and command code (or PKI flag and slave SLS status);

3B and 4B are the low and high bytes of data, respectively;

5B is the checksum.

The main disadvantage of the method of operating the medicine according to (17) is very significant overhead (at least 67%), since the transmission of every two bytes of data 3B and 4B is accompanied by four service bytes 0B-2B, 5B.

There is a known technology [1] using the transformation algorithm {(7), (8)}, which defines the way a specialized medicine works as a logical mechanism for assembling and disassembling control, response and information frames based on three types of words (command (CS (1:20) ), data (SD (1:20)) and response (OS (1:20))), each of which, within the discrete time, 20 bit periods T _b = 2 · Tk from “1 - first T _b ” to “20 -20 th T _b »is the 20-bit transmitted older (first) discharge forth for

Separated into parts, these words have the form

Where

CK1 and CK2 - starting a play (clock signals) respectively COP (1:20) (or OS (1:20)) and SD (1:20), which in six discrete time periods T _k according to (8) are defined by expressions SK1↔111000 and SK2↔000111, respectively;

AOU (4: 0) = CS (4: 8) or AOU (4: 0) = OS (4: 8) - a 5-bit address code, which is an individual code for each slave SLS that belongs to one of the codes “00000” to “11110”, and with AOU (4: 0) = KS (4: 8) = 11111, the word (19) is a group mode command to transmit it from the master SLS to the group of slave SLS, which are assigned the common address “11111” in addition to their own addresses. In this case, the fact of the execution of the slave SLS command of the group mode can be established by the master SLS by analyzing the OS (1:20) received in response to any of the following commands “Transmit OS”, “Send last command”;

K = KS9 - sign transmit / receive, indicating the leading SLS that it should transmit data at K = 1, and receive at K = 0;

AA (4: 0) / RU = KS (10:14) - the code is decoded so that when "00001≤KS (10:14) ≤11110 determines the control mode signal (RU) at RU = 0 and is the code AA (4 : 0) = CS (10:14) of the subscriber's address (or subaddress), and in the other two cases, when CS (10:14) = 00000 or 11111, only the RU = 1 signal is determined. It is allowed to use the discharge of KS 10 as a sign of KS (20) at KS 10 = 1. In this case, the subscriber address code (AA) has the form AA (3: 0) = KS (11:14) and is decrypted at “0001≤KS (11:14) ≤1110;

CSD (4: 0) / KK (4: 0) = KS (15:19) is, when RU = 1, the command code KK (4: 0) = KS (15:19), and when RU = 0, the code is the number of data words BSD (4: 0) = CS (15:19), which must be transmitted (or received) by the OS in connection with receiving the CS (1:20) at K = 1 (or K = 0), and the number of transmitted (or received) ) SD (1:20) of the data words must correspond to the decimal equivalents of the code BSD (4: 0) with the exception of the code “00000”, which must correspond to the number 32;

p is the parity bit of each of the words (18) - (20), which should take such a value that the sum of all 17 information bits of the word is odd;

d (15: 0) = SD (4:19) - data code;

PP (10: 0) = OS (9:19) - a field of signs meaning the following:

PP10 = OS9 = A - the sign “Error in the message” is mandatory for use. Upon receipt of the slave SLS reliable message (frame), this symptom is reset and the slave addressed SLS after a pause with AOU (4: 0) = CS (4: 8) ≠ 11111 transmits the OS. When receiving a slave SLS of an invalid frame, this sign is established, and the OS is not transmitted if a reliable CS is received, but a violation of the continuity of words transmitted in the frame without pauses is detected, or a discrepancy between the number of CDs in the data block and the number specified in the CSR field is found (4: 0) = CS (15:19), or at least one SD was found that does not meet the reliability criteria: does not meet form (20), does not satisfy the encoding algorithm {(7), (8)}, the sum of the values of all 17 information bits is even . In addition, it is allowed in the slave SLS the ability to check the CS for admissibility. Any reliable COP not envisaged for execution in this SLS is considered unacceptable. If in the slave SLS the possibility of checking the CS for admissibility is realized, then when an invalid CS is received for receiving data, accompanied by the number of reliable SDs indicated in it, it must transfer the OS with OS9 = 1, and when receiving an invalid CS for data transfer it must transfer the OS with OS9 = 1 and do not pass data words;

PP9 = OS10 = B = 0 - the “OS Transmission” sign, which is a hardware bit designed to identify response and command words;

PP8 = OS11 = C - optional sign of the request for service. If OS11 = 0 is not used, and when OS11 = 1 is used, it tells the leading SLS to take certain actions with respect to the subscriber in need of service in order to satisfy this requirement. If there are several subscribers who can influence the setting of the OS11 feature, then to determine the leading SLS of the one by whose initiative this sign was established, a separate data service word d (15: 0) called the "Vector word" should be used in the slave SLS;

PP (7: 5) = OS (12:14) = 000 - reserve field;

PP4 = OS15 = D - optional sign “Group team accepted”. If OS15 = 0 is not used, and when using this feature should indicate the reception of the slave SLS of a reliable group command so that this SLS sets or resets this sign when a reliable or false group command is received, respectively;

PP3 = OS16 = E - optional sign “Subscriber is busy”. If OS16 = 0 is not used, it indicates the constant possibility of exchanging data with the memory of the respective SLS subscribers (i.e., the ability to access the memory of the corresponding SLS subscribers when reading or writing). The use of the flag indicates, when OS16 = 1, that data exchange with the memory of any SLS subscribers is prohibited. When OS16 = 1 and receiving a data transmission command from the master SLS, the slave SLS should transmit only the OS with OS16 = 1 and not transmit SD;

PP2 = OS17 = F - optional sign of “Subscriber malfunction”. If OS17 = 0 is not used, and if used, OS17 indicates the technical state of the subscriber (operational with OS17 = 0 and faulty with OS17 = 1) associated with this slave SLS. If there are several subscribers that can affect the setting of the OS17 sign, then to determine the faulty subscriber, the slave SLS should use the data service word d (15: 0), called the “Integrated OS control word”;

ПП1 = OS18 = G - optional for use sign “Accepted interface management”. If OS18 = 0 is not used, and when used, after receiving the command “Accept Interface Control”, received by the slave SLS, this SLS must transfer the OS with a decision so that, if the feature is set, it becomes the leading SLS, and if the flag is reset, the leading SLS should continue to control, transmitting this command as KS (19) at KS (15:19) = KK (4: 0) = 00000;

PPO = OS19 = N - not mandatory to use the symptom "OS failure". When OS19 is not used, 0 = 0, and when used, this sign should indicate the technical condition of the OS so that if an incorrect operation of the OS was detected, then the sign should be installed, and if not, then reset.

In technology [1], CS (19) is used with RU = 1 (that is, with CS (10:14) = 00000 or 11111) to transmit the slave SLS of the first (UK1) and second (UK2) control frames in the form

which, in turn, are used both for transmitting the slave SLS in the frame (23) of the service LED, and for receiving response frames OK1 and OK2 from it, respectively, without the LED and with the service LED, which have the form

Frames (22) at К = КС9 = 1 and КК (4: 0) = КС (15:19), ranging from “00000” to “01111”, are applied without LEDs and mean control commands, which are called and executed as follows way:

"00000" - "Take control of the interface." It is intended for transmitting LAN control from the leading SLS to the slave SLS, which, after transmitting the OS with OS18 = 1, becomes the leading one, otherwise the control function in the LAN continues to be performed by the SLS that transmitted this command;

"00001" - "Synchronization". Designed to synchronize the operation of the slave SLS. Having accepted the command, the slave SLS should transmit OK1 and proceed with the execution of the command;

“00010” - “Transfer OS”. Designed to receive the master SLS from the slave station OK1, corresponding to the last reliable command received before this command. This command should not affect the PP (10: 0) = OS (9:19) and the values of the word bits with the signs of the built-in control system (VSK) of this SLS;

"00011" - "Start self-control." Designed to initiate self-monitoring of the slave SLS. Having accepted the command, the slave SLS should transmit OK1 and begin self-monitoring;

"00100" - "Block the transmitter." Designed to lock the transmitter with a duplicated LPI. Having accepted a command from one LPI, the slave SLS must transmit OK1 through the same LPI and block the transmitter connected to another LPI;

"00101" - "Unlock the transmitter." Designed to unlock the transmitter with a duplicated LPI. Having accepted a command from one LPI, the slave SLS must transmit OK1 through the same LPI and unlock the transmitter connected to another LPI. Lock cancellation must also be performed by the “Reset” command;

"00110" - "Block the symptom of a malfunction." It is intended to block the issuance of a logical “1” in the category ПП0 = OS19, which belongs to the OS (21). Having accepted the command, the slave SLS should establish a lock and pass OK1 with PP0 = OS19 = 0;

"00111" - "Unlock the symptom of a malfunction." Designed to cancel the lock previously performed on the command "Block the symptom of a malfunction." Having accepted the command, the SLS must release the lock and pass OK1 (24). Lock cancellation should also be performed by the “Reset” command;

“01000” - “Set to initial state”. Designed for canceling previously performed locks in the slave SLS. Having accepted the command, the slave SLS should transmit OK1 (24), and then set itself to its original state;

“01001-01111” - reserve.

All the commands described above are applicable when AOU (4: 0) = KS (4: 8) = 11111 in group UK1 with the exception of the commands “00000” and “00010”.

The control commands belonging to UK1 or UK2 and ranging from "10000" to "11111" provide for the transfer of the service data word d (15: 0) from the slave SLS to the master or from the master SLS to the slave and are called and performed as follows:

"10000" - "Transmit a vector word." It is transmitted to UK1 at K = KS9 = 1. It is intended for transmission from the slave to the leading SLS of the service SD - a vector word (BC), in which the data code d (15: 0) contains information on the service request with PP8 = OS11 = 1. Having accepted the command, the slave SLS should transmit OK2, in which SD (1:20) = BC (1:20);

“10001” - “Synchronization with SD”. It is transmitted to UK2 at K = KS9 = 0. It is intended for transmission from the master SLS to the slave service LED - the data synchronizing word (SDS) as LED (1:20) = SDS (1:20), in which the data code d (15: 0) contains information about the synchronization of the slave SLS. Having accepted UK2 containing this command, the slave SLS must transmit OK1 and proceed with the execution of the command;

"10010" - "Send the last command." It is transmitted to UK1 at K = KS9 = 1. It is intended for transmission from the leading SLS to the slave service LED (1:20) with LED (4:20) = CS (4:20), where CS (4:20) should correspond to the similar bits of the CS (1:20) of the last reliable command except for this command. Having accepted CC1 containing this command, the slave SLS should transmit OK2, in which CD (4:20) = CS (4:20), where CS (4:20) corresponds to the similar bits of CS (1:20) of the last reliable command;

"10011" - "Pass the word VSK." It is transmitted to UK1 at K = KS9 = 1. It is intended for transmission from the slave SLS to the leading service LED - the words of the built-in monitoring system (SSC), in which the data code d (15: 0) contains the VSC information of this slave SLS. Having accepted the command, the slave SLS should transmit OK2 with SD (1:20) = SSC (1:20);

"10100" - "Block the 1st transmitter." It is transmitted to UK2 at K = KS9 = 0. It is intended for transmission from the master SLS to the slave service LED — transmitter lock words (SBP) for blocking the transmitter of the slave SLS in the LAN with three or more duplicated LPIs. The number of the transmitter to be blocked must be indicated in the LED (1:20) = SBP (1:20) contained in UK2. Having accepted UK2 containing this command, the slave SLS must transmit OK1 via the LPI from which this command was received and block the TLI transmitter with the exception of the TLI transmitter from which this command was received;

"10101" - "Unlock the i-th transmitter." It is transmitted to UK2 at K = KS9 = 0. It is intended for transmission from the master SLS to the slave service LED — transmitter unlock words (PSA) for unlocking the transmitter of the slave SLS in the LAN with three or more duplicated LPIs. The number of the transmitter to be unblocked should be indicated in the SD (1:20) = PSA (1:20) contained in UK2. Having accepted UK2 containing this command, the slave SLS should transmit OK1 via the LPI from which this command was received and unlock the corresponding transmitter of the other LPI. Lock cancellation should also be performed by the command “Set to initial state”;

"10110-11111" is the reserve.

All frames (22) - (25) are auxiliary and are used in the master SLS to obtain service information about the status of all slave SLS, which is then used by the master SLS, using the CS (19) with RU = 0, to organize the exchange between the master SLS and Slave SLS or between slave SLS data packets (PD)

in which the decimal number of data words of the BSD = 1; 2; ...; 31; 32 is determined respectively by the binary code Chesh (4: 0) = KS (15:19) = 00001; 00010; ...; 11111; 00000 so that PD (26) contains the number j of LEDs (1:20) from j = 1 to j = 32.

Based on the foregoing, let us consider how the transmission of PD (26) is carried out in the following three cases: from the leading SLS to the slave SLS _k , from the slave SLS _j to the leading SLS and from the slave SLS _j to SLS _k for j ≠ k, which we denote respectively SLS → SLS _k , SLS _j → SLS and SLS _j → SLS _k , where SLS _j is an addressable slave SLS, and SLS _k is either an addressable slave SLS or a group of slave SLS when implementing a group command, which hereinafter we define the sign GK = 1 for CS (4: 8) = 11111, and the addressable command is determined by the sign GK = 0 for CS (4: 8) ≠ 11111.

In the first case, the transmission of PD (26) is carried out by transmission at RU = 0 and K = KS9 = 0 of the information frame IK1 (SLS → SLS _k ) of the form

which is in case of AOU (4: 0) = CS (4: 8) = 11111 group, addressed to a group of subscribers of the corresponding slave SLS _k , and when AOU (4: 0) ≠ 11111 addressed to the subscriber of one slave SLS _k , which, having received SG1 (27 ), must transmit OK1 (24).

In the second case, the transmission of PD (26) is initiated when RU = 0, K = KS9 = 1 and GK = 0 by transmission from the leading SLS of the control frame UK3 (SLS _j ) of the form

in response to which addressed SLS _j forms an information frame SG2 (SLS _j ) of the form

In the third case, the transmission of the AP (26) is initiated by the transmission from the leading SLS of the control frame UK4 (SLS _k , SLS _j ) of the form

in which KC _k (1:20) is at RU = 0, K = KC9 = 0 and GK = 0 (or GK = 1) addressed (or group) for one slave CLC _k (or group of slave SLS _k ) command to receive PD (26), a KC _j (1:20) is at RU = 0, K = KC9 = 1 and GK = 0 the addressed command for the slave SLS _j for transmitting PD (26).

Having received from the UK4 (30) a command for transmitting PD (26), the addressed slave SLS _j forms an information frame SG2 (29), from which one slave SLS _k or each of the group of slave SLS defined by the word KS _k (1:20) of the frame UK4 (30), PD (26) is obtained from IR2 (29).

Thus, using auxiliary frames (22) - (25) and main frames (27) - (30) in the LAN, the PD is exchanged (26) between any subscribers, and in the absence of failures, the full format for transmitting the PD from CLC _j to CLC _k (FPPD (CLC _j → CLC _k )) for GK = 0 has the form

and the transmission of PD from CLC _j to SLS _j (for example, for voice transmission for self-listening) is possible only through the leading SLS, and the full format of this transmission (FPPD (SLS _j → SLS _j )) has the form

where Tn is the duration of the pause between frames, estimated by the value (1).

On the basis of (1), (5) and (18) - (30), overhead costs for transmitting PDs (26) in formats (31) and (32) without taking into account the costs of transferring all d (15: 0) in the PD itself ( 26) are estimated by values

where BSD is the number of words in PD (26), varying from one to 32.

In general, the main disadvantage of the technology [1] is the low quality of the drugs due to the lack of an automatic mechanism for the network to exit from the possible first abnormal state (the appearance of several leading SLS in the network when at least one slave SLS switches to the leading state when the OS18 = 1 or the second abnormal state (the absence of the master SLS in the network when switching due to a failure of the master SLS to the state of the switching slave at OS18 = 0), significant overhead of the organization in the transmission network of each AP (26) (see ki (33) and (34), the complexity of the transformation {(7), (8)} and the complexity of taking into account all the consequences when transferring network control from the controlling SLS to any other controlled SLS by the command 00000 - "Accept interface control", because using this the team implements the principle of non-stationary control of the multiplex channel (ie, a specialized LAN), which is complex and rarely used [2, p. 260-261], which, in our opinion, is due to insufficient use of the principle's capabilities in building a network due to the lack of in the address field of the network the individual the unique address of the master SLS and the addresses of its subscribers, as well as the lack of a clear mechanism in the technology [1] for the automatic exit of the network from a possible anomalous state — the absence of a master SLS in the network or the appearance of several master SLS in the network due to a failure when the master SLS switches to the slave state or when the slave SLS is switched to the master state, respectively.

The disadvantage of the technology [1] is, in our opinion, also the use of a distorted Manchester code to determine SK1 and SK2, which leads to overhead for three bit intervals during the transfer of each data code d (15: 0) to the PD (26) and an additional hardware costs of the transformation (8), which is more complicated than the transformation (7).

It should also be noted that BSD = 1; 2; ..., 31; 32 is determined by the binary code ČSD (4: 0) = KS (15:19) = 00001; 00010; ...; 11111; 00000 so that PD (26) contains the number of LEDs (1:20), respectively, from one to j = 32 inclusive. This means that in case of an FSS (4: 0) при 00000 it is a direct code of the FSS = 1, 2, ..., 31, and in the case of FSS (4: 0) = 00000 an additional code of the negative number “-32” excluding sign discharge. In this regard, before each account, it is necessary to load an additional DCHSD code (4: 0) into the ChSD counter, which is generated according to the expression

where! - operator for converting the code of the CSD (4: 0) into the reverse code.

Operation (35) must be performed both when sending and when receiving IK1 (27) or IK2 (29), which leads to additional hardware costs and is also a drawback of the technology [1].

In addition, in technology [1], the information capacity of the control command code is used inefficiently because it contains 17 reserve positions with 15 significant ones, two of which (10100 - “Block the i-th transmitter” and 10101 - “Unlock the i-th transmitter”) is advisable , in our opinion, to unite the i-th transmitter in one command by highlighting the transmitter number and the transmitter control bit (BUP) in the service word of the field, such that the transmitter is blocked at BUP = 1 and unlocked at BUP = 0 .

Formally, at КС10 = 0, the words КС (1:20) and OS (1:20) are indistinguishable. Therefore, to ensure the identification of these words, the user is allowed to set KC10 = 1 to use it as a feature of the word KS (1:20). In view of the above, the quality of drugs built using technology [1] is generally estimated by the vector

which is certainly worse than the required SEC (16), with the possible exception of PSO, CPC, and the estimated indicators of the NCBI (33) and the NCBI (34).

Of the known technical solutions, the technology closest in technical essence to the proposed one is technology [18]. This technology also uses the transformation algorithm {(7), (8)}, is a development of the technology [1] and defines the way the specialized drugs work as a logical mechanism for assembling and disassembling control, response and information frames based on four types of 20-bit command words ( 0KS (1:20) - data exchange, 1KS (1:20) - control mode, 2KS (1:20) - group data transfer format, 3KS (1:20) - group control mode format), which have the form

one type of 20-bit OS response word (1:20) of the form

3-bit array header 3M (1:16) of the form

16-bit checksum word (SCS (15: 0))

and used in conjunction with 3M (1:16) and data word d (15: 0) to compose information frames of a complex data packet (SPD) of the form

Where

X or X (6:12) - unused bits and field, respectively;

TF = OC4 - “Terminal Failure”;

SF = OC5 - "Subsystem Failure";

SR = OC6 - “Service Request”;

BS = OC7 - "The subsystem is busy";

ME = OS11 - "Error in the message";

CB = OS12 - “Accepted dynamic control of the channel”;

PR (16:19) = OC (16:19) - the code of the priority field, which is set in the subsystem only in response to a special command and serves to transmit the priority of the request to the UE;

FC = 3M1 - turns on at FC = 1 and turns off at FC = 0 the use of SCS (15: 0) after transmitting the AP as a continuous sequence of data words d (15: 0), the number of words in which is determined by the code of the BSD (11: 0) = 3M (5:16);

NW = 3M2 - prohibits the DT at NW = 1 or allows the DT at NW = 0 to issue an OS (41) after receiving the DT of the corresponding information frame containing the SPD (44);

SCS (15: 0) * - SCS code (15: 0), in which the “*” sign indicates the optional presence of SCS (15: 0) in the SPD (44), since SCS (15: 0) is sent to the network only with FC = 3M1 = 1 contained in 3M (1:16).

According to [18, Fig. 2.18, p. 96] using (37) - (44), the work of drugs is carried out in the process of sending the first UK1 = 1KS (1:20) and second UK2 = 3KS (0:20) control frames to the network respectively, individual and group control without a data word, the third UK3 = {1KS (1:20), d (150)} and the fourth UK4 = {3KS (1:20), d (15: 0)} control frames, respectively, individual and group controls for transmitting by the SLS master a service word d (15: 0), in particular, “Synchronization words with a data word” or the words “Block / unblock the i-th transmitter” in the LAN with the number of duplicated LPIs not m less than three, the first OK1 = OS (1:20) of the response frame, the second OK2 = {OS (1:20), d (15: 0)} of the response frame to transmit the leading SLS service word d (15: 0), in particular The “Vector word”, with which the current addresses of the respective subscribers for organizing the PD exchange network, or the “Built-in word for monitoring the SLS”, the first IK1 = {0KS (1:20), SPD} and the second IK2 = {2KS (1: 20), SPD}, respectively, individual or group transmission of PD from the master SLS by the slave and the fifth UK5 = 0KC _j (1:20) (or the sixth UK6 = {0KS _k (1:20), 0KC _j (1:20)}) and seventh UK7 = {2KS _{(1:20), 0KC j (1:20} )} of control frames predsh stvuyuschih departure from slave CLC _j third information frame SG3 (SLS _j) = {OS (1:20)} for transmission SPD PD respectively individually SLS leading (or trailing SLS _k) or a group of slave SLS. Thus, according to technology [18], the LAN operation method is carried out using 12 types of frames so that in the absence of failures, the full format for transmitting PD from SLS _j to SLS _k (FPPD (SLS _j → SLS _k )) has the form

FPPD (CLC _j → CLC _k ) = {UK1 for CLS _j , Tp, OK2 from CLS _j , Tp,

UK1 for SLS _k , Tp, OK2 from SLS _k , Tp, UK6, TP, IK3 (SLS _j ), TP, OK1 from SLS _k },

and is estimated at FC = 3M1 = 1 and NW = 3M2 = 1 overhead

and the full format of the transmission of PD from SLS _j to SLS _j , carried out through the leading SLS, has the form

FPPD (SLS _j → SLS _j ) = {UK1 for SLS _j , Tp, OK2 from CLS _j , Tp, UK5 (SLS _j ),

TP, IR3 (SLS _j ), TP, IR1 (SLS → SLS _j ), TP, OK1 from SLS _j },

and estimated FC = 3M1 = 1 and NW = 3M2 = 1 overhead

The main disadvantage of the technology [18] is the low quality of the drugs, due to the lack of an automatic mechanism for the drug to exit from the first abnormal state when several leading SLS appear on the network when at least one slave SLS switches to the state of the leading or second abnormal state when there is no the network of the master SLS when switching due to a failure of the master SLS into the state of the switching slave, as well as the difficulty of converting {(7), (8)}, compiling, sending, receiving and disassembling 12 types of frames and value overhead costs - see estimates (45) and (46).

This drawback is due to the fact that in [18] the technology [1] was upgraded poorly and quantitatively by increasing the number of base words from three (19) - (21) to seven (37) - (43), which allowed to increase the number of SLS to 64 and increase the number of subscribers of each SLS to 32 for both writing and reading. Therefore, most of the previously mentioned shortcomings of technology [1] are automatically also disadvantages of technology [18].

The present invention solves the problem of improving the quality of drugs by rationally compiling six types of frames (two control UK1, UK2, one information frame IR and three response OK1, OK2 and OK3), which leads to a decrease in the number of frame types, reducing the overhead of the organization of transmission of PD between by any valid LAN subscribers and providing a mechanism for automatic LAN exit from two possible abnormal states using the “Set the network to its original state” command when several leading SLS appear in the LAN and and in the absence of drugs leading SLS, respectively, possible due to failure of at least one switchable driven SLS when you switch it to the state of the master or fails over leading SLS when switching its state is switched to the slave.

The specified technical result is achieved by the fact that the method of operation of the local network, containing in working condition one switching master station of the local network (SLS), many switching and non-switching slave SLS and one data transmission line (LPI) or several duplicated with shared access and centralized deterministic control exchange of messages between valid subscribers of all SLS on the basis of breaking messages into data packets (PD) and transmitting PD in information frames when implementing info in the network the process by compiling, sending to the network and receiving from the network and disassembling control, response and information frames under the control and control of the controlling SLS when sending each frame of the information process after detecting a pause so that either one of the control frames is sent from the leading SLS or one of the response frames from the corresponding slave SLS or send an information frame with the resolved checksum word (SCS) from the master or the corresponding slave SLS, while the frames are using the start combination, a two-digit determinant field, an individual SLS address field, a control command field, 16-bit service words, a PD field with a permissible SCS, a PD length field to determine the number of data words in a PD field and a control bit contained in any control or response frame and defined as the addition of the number of all previous information unit bits of the frame to an odd number, is carried out by compiling, sending to the network, receiving from the network and disassembling two types of control firewood, information frames of one type and three types of response frames, while in the information process senders of frame types and the order of their sequence are determined taking into account the state of the network (working or first anomalous state that occurs when more than one switching master SLS appears in the network when switching from - due to the failure of at least one slave switching SLS to the master state, or to the second anomalous state, determined by the absence of the master SLS in the network when switching due to the failure of the master SLS in the driven slave) and composing the frames so that the first control frame contains the start combination, the determinant field, the field of the individual address of the SLS, the addressing modifier, the field of the control command and the control bit, the second control frame contains the start combination, the field of the identifier, the field of the individual address of the SLS, modifier addressing, a control command field that differs from the contents of the control command field of the first control frame, a service word and a control bit, the information frame contains a starting comb nation, the control word formed by the qualifier field, the recipient’s individual address field defining the individual SLS address and the address of its subscriber to the PD recipient, the sender’s individual address field defining the individual SLS address and its subscriber’s subscriber address, the PD length field determining the number of data words in PD, an addressing modifier, the unit value of which addresses the SLS group for receiving the PD by one or more subscribers of each SLS group, for example, by subscribers defined individually SLC address of the sender, the subscriber part of the field of the individual address of the recipient and / or the subscriber part of the field of the individual address of the sender of the PD, the modifier of the exchange method and the control bit, the field of PD and SCS resolved by a single value of the modifier of the exchange method in the control word, in which the value of the control bit is defined as addition of the number of all unit bits preceding the control bit to an odd number, the first response frame contains the start combination, determinant field, SLS status word and control bit I, the second response frame contains the start combination, the determinant field, the SLS status word, the service word and the control bit, the third response frame is the first or second control frame with inverse bit values in the determinant field, or an information frame with excluded PD and SCS fields and the inverse values of the bits in the determinant field, whose code in the first or second control frame is “10”, in the information frame is “11”, in the first or second response frame is “01”, and the SLS status word contained in the first or the second response frame is made up in each SLS so that it contains the sender’s subscriber address field and the signs “Information frame readiness” for sending to the network an information frame from the subscriber’s address, the address of which is contained in the sender’s subscriber address field, to the recipient defined by the service words addressing the recipient of the information frame being prepared, “SLS readiness”, which is also a sign of readiness of receiving an information frame from the network, “SLS malfunction”, “Error in the frame” and “T n stations ”, defining a slave or master station respectively by zero or a single value, in addition, in each SLS form a numbered SLS state vector containing the field of the individual address of the SLS, the information part of the third response frame, the determinant field and the length field of the PD for composing the information frame, the information word of the first response frame, the service word of addressing the recipient of the information frame and the service word of the built-in control system, while the contents of the fields of individual addresses the ruler and receiver of the information frame determine the number of the numbered SLS state vector, the corresponding parts of which in any SLS make up the control word of the sent information frame in hardware, and in each slave SLS, the information parts of the first, second or third sent response frame, and the received first control frame with the command “Send an information frame” from the individually addressed slave SLS, when ready or not ready, respectively send information in response This frame or the second response frame with the addressing service word of the recipient of the information frame, the second response frame with the desired service word is sent to the network from the individually addressed slave SLS also in response to the received first control frame with the corresponding control command, the first response frame is sent to the network from individually addressed slave SLS in response to the received information frame with a single exchange modifier or the first control frame with the corresponding control command code or second a control frame, at one of the values of the control field of which the command “Record the addressee addressing word” is executed, upon completion of which the service address word of the recipient of the information frame is replaced with the service word of this received second control frame, and then the numbered state vector is switched, which is also switched after receiving the first control frame with the control command "Switch the numbered SLS state vector", and the third response frame is sent to the network from individually addressed slave SLS in response to the first control frame with the command "Send the last command", at any value of the addressing modifier, the first or second control frame is sent to the network to an individually addressed slave SLS to execute any valid control command, with a single value of the addressing modifier first or the second control frame is sent to the network when multicasting for execution by a group of slave SLS only those commands that are suitable for group execution, information I the length of the first control or first response frame is 16 bits, the information length of the second control or second response frame or control word of the information frame is 32 bits, in each frame the stream of information bits is sent to the network after the start combination with the least significant bit forward, in the information frame SCS is calculated first, by the flow of information bits of the control word, and then by the flow of bits of the PD field, the leading SLS is equipped with the ability to detect the first abnormal state of the network (a simultaneous the network of several leading SLS in case of network failure) by detecting distortion of the control frames sent by it and the appearance of another leading SLS in the network of control frames, and each switching slave SLS is equipped with the ability to detect the second abnormal state of the network (disappearance from the network of the leading SLS in case of network failure) account for detecting the duration of the pause exceeding the threshold, upon detection of the first or second abnormal state of the network from the master or switching slave SLS, for example, by random access the first control frame with the command "Set the network to initial state" is sent to the network, if this frame is reliably received, any SLS other than the one sending this frame is unconditionally reset to the slave SLS, and the first response frame is sent to the network from any individually addressed SLS, in the first case, the receipt of a reliable first response frame is interpreted in the master SLS as a message about the transition of the network to the working state, and in the second case in the switching slave SLS, from which the first th control frame with the command "Set the network to its original state", upon receipt of a reliable first response frame, the sign "Station type" is set and left in the network as the only leading SLS.

The authors do not know the method of operation of a LAN containing, in operational condition, one switching master SLS and many switching and non-switching slave SLS and one or several duplicated LPIs with shared access and centralized deterministic control of message exchange based on dividing them into PDs and transmitting PDs in information frames between addressed subscribers of all its SLS when the information process of interaction between the SLS is implemented in the LAN, taking into account the state of the LAN (working and first or second abnormal condition ) and the rational compilation of two types of control frames (UK1, UK2), information frame (IR) and three types of response frames (OK1, OK2, OK3) so that UK1 contains a start combination (SK), a determinant field, an individual SLS address field , addressing modifier (MA), control command field (CC) and control bit. UK2 differs from UK1 in the content of the KU field and the presence of a service word following the KU field. The IR contains a control code, control word US = {field of the identifier, field of the individual address of the receiver of the PD, field of the individual address of the sender of the PD, field of length of the PD, which determines the number of data words in the PD, MA, modifier of the exchange method (IMO) and control bit} and the PD with the checksum word resolved with IMO = 1. OK1 contains SK, determinant field, SLS status word and control bit, OK2 differs from OK1 by the presence of a service word following the field of SLS status word, OKZ is UK1 or UK2 or (SK, CSS) with inverse bit values in the determinant field, when In this case, the leading SLS is equipped with the ability to detect the first abnormal state of the network (the simultaneous appearance of several leading SLS in the network during a network failure), and each switching slave SLS is equipped with the ability to detect the second abnormal state of the network (disappearance from the network in when the first or second abnormal state of the network is detected from the master or switching slave SLS, for example, by random access the first control frame is sent to the network with the command "Set the network to initial state", if any SLS is reliably received , in addition to the one sending this frame, it is unconditionally set to the initial state of the slave SLS, and from any individually addressed SLS the first response frame is sent to the network, in the first case receiving a reliable first response the frames are interpreted in the master SLS as a message about the network transitioning to its normal state, and in the second case, in the switching slave SLS, from which the first control frame with the command "Set the network to initial state" was reliably sent to the network, when receiving a reliable first response frame, set sign “Type of station” and leave it on the network as the only leading SLS.

The distinctive features of the proposed method of operation of drugs provide, in comparison with the prototype [18], an increase in the quality of drugs due to both providing a mechanism for the automatic exit of the network from the first or second failed abnormal state, respectively, when more than one leading SLS appears in it or the leading SLS disappears from it, or reducing the number of frame types from 12 to six and reducing the overhead when transferring PD from one SLS to another by 92%, and between subscribers of one slave SLS by an average of 231%.

Thus, the proposed method of operating drugs with centralized deterministic control of messaging over one or several duplicated LPIs with shared access is carried out taking into account the state of the drug (operating state and the first and second abnormal conditions) and the rational compilation of two types of control frames UK1 and UK2 of the form

IR information frame

in which the control word has the form

Where

SK - starting combination;

p is the control bit, which is determined in any of the frames (47) - (49), (51) - (53) as the addition of the number of all previous information unit bits of the frame to an odd number;

y (0:15) and y (0:31) - information codes of frames UK1 (47) and UK2 (48), respectively, which have the same code identifiers y (0: 1) = 10;

IA (0: 4) = y (2: 6) - field code of the individual address of the SLS addressing the SLS with the code of the individual address of the IAS (0: 4), which with IAS (0: 4) = IA (0: 4) = y (2: 6) addresses both the execution of the command defined by the code KU (0: 3) = y (11:14), and the subsequent transfer from it of one IR (49) or OK1 (51) or OK2 (52) or OK3 ( 53) as a response to UK1 (47) or OK1 (51) as a response to UK2 (48);

y7 = 0, y8 = 0 and y9 = 0 are reserve bits;

МА = у10 - addressing modifier UK1 (47) and UK2 (48);

KU (0: 3) = y (11:14) is the code of the control command field, and the control commands defined by this field are modified technology control commands [1] and are divided into control commands with wide addressing (that is, individual for SLS with IAS (0: 4) = y (2: 6) and with multicast addressing of all SLS at MA = 1, transmitted to UK1 (47) or UK2 (48)) and control commands with narrow addressing, transmitted always at MA = 0 in UK1 (47) for an addressed SLS with IAS (0: 4) = y (2: 6).

Broadly addressed teams sent to UK1 (47) with y (11:14) = 0000-0110 are accepted with IAS (0: 4) = y (2: 6) addressed to the SLS, and with MA = 1 any SLS, and are executed as follows:

0000 - the command "Set SLS to its original state" is sent to the master SLS with MA = 0. The command is designed to cancel previously performed locks in the slave SLS. Having accepted the command, the SLS led by IAS (0: 4) = y (2: 6) must establish itself in its initial state and send OK1 (51);

0000 - the command "Set the network to its initial state" can be sent when MA = 1 from the leading SLS when it detects the first abnormal state of the network (several leading SLS appear on the network) or from the switching slave SLS when it detects the second anomalous state of the network (disappearance of the master SLS from the network ) Having accepted the command, any SLS, except for sending this command, must establish itself in the initial state of the slave SLS and the addressed one must transmit OK1 (51). The switching slave SLS that sent the given command reliably, having received reliable OK1 (51), sets the sign c14 “Station type” and proceeds to perform the functions of the master SLS;

1000 - the command "Switch the numbered state vector of the SLS". The command is designed to switch to the SLC the numbered station state vector (NVSS _QG ). In any slave SLS after receiving command 1000 - "Switch the numbered SLS vector" in UK1, c8 is reset and OK1 is sent from it, and then it establishes the next NVSS _QG corresponding to the next priority subscriber to the sender "Q", and NVSS _QG in any SLS allows you to hardware make CSS (50) or the information part of UK1 (47), or UK2 (48), or OK1 (51), or OK2 (52), or OK3 (53), because it has the form

Where

IAS (0: 4) = IAO (0: 4) = k (12:16) - the individual address of the SLS used in the preparation of the CSS (50) belonging to IK (49);

ICHOK3 (0: x) - information part OK3 (53), which is a previously accepted reliable information part UK1 (47) (or UK2 (48)) at x = 15 (or at x = 31) and the inverse determinant is “01” or US (50) with x = 31 and the inverse determinant "00";

ЧСД (0: 6) = k (22:28) - code of the number of data words contained in the equation of state (50) and determining the number of 32-bit words in the field of the data sheet IR (49);

k (0: 1) = 11 - determinant of CSS (50), which determines IR (49);

s (0:14) - the field used to compile OK1 (51) or OK2 (52);

AP (0:15) - the service word of the addressee of the recipient, used to compose CSS (49) or OK2 (52);

VSK (0:15) - the service word of the integrated control system used to compile OK2 (52);

QG - number HBCC _QG, wherein in the general case «Q» - individual network subscriber number of the sender / recipient AO _Q / AP _Q, defined IAO code (0: 9) = k (12:21) at IAO (0: 4) = IAS (0: 4), IAO (5: 9) = AAO (0: 4) = s (2: 6), and “G” is the individual network number of the subscriber of the recipient / sender of the AP _G / AO _G , determined by the IAP code (0: 9) = K (2:11) = AP (0: 9) belonging to the service word of addressing the recipient of the AP (0:15), which is made according to the expression

Where

AP (0: 9) = k (2:11) = IAP (0: 9) - the code of the individual address of the subscriber of the recipient / sender of the AP _G / AO _G used to compile the CSS (50);

АП10 = MA = k29 and АП11 = ММО = k30 - respectively, the addressing modifier and the exchange method modifier used to compose the CSS (50);

AP12 = PTA = X - a sign of the type of subscribers of AO _Q / AP _Q and AP _G / AO _G , such that these subscribers are PTA = 0 or PTA = 1 regular or telephone subscribers, respectively;

AP13 TID = - sign outgoing call from AO _Q / _Q AP and AP _G / AO _G, used to organize the telephone;

AP14 = PVV - sign of an incoming call from AO _G / AU _G to AU _G / AO _Q , used to organize telephone communications as a response to IRP;

AP15 = PNVA - sign of unavailability of the called subscriber of AP _G / AO _G , used to organize telephone communication as a response to IRP when the AP _G / AO _{G is} unavailable;

AAO (0: 4) - the address code of the sender's subscriber, which in US (50) is equal to k (17:21), and in OK1 (51) or OK2 (52) is equal to (2: 6);

0100 - the command “Start self-monitoring of SLS”. The command is designed to initiate self-monitoring of SLS. Having accepted the command, the SLS should reset c9 and begin self-monitoring and, with IAS (0: 4) = IA (0: 4) = y (2: 6), send OK1 (51);

1100 - the command "Block i-th transmitter" in the LAN with two duplicated LPI. Having accepted a command from one LPI, the SLS must block the transmitter connected to the other LPI, and with IAS (0: 4) = y (2: 6), the slave SLS should send OK1 (51) via the LPI from which the command was received;

0010 - the “Unlock i-th transmitter” command in the LAN with two duplicated LPIs. Having accepted a command from one LPI, the SLS must unlock the transmitter connected to the other LPI and, at AC (0: 4) = y (2: 6), the slave SLS should send OK1 (51) via the LPI from which the command was received. Lock cancellation must also be performed by any of the commands KU (0: 3) = y (11:14) = 0000;

1010 - the command "Block symptom of SLS malfunction". The command is designed to block the issuance of the logical “1” in feature c11 “SLS Malfunction” contained in the word c (2:14). Having accepted the command, the SLS must establish a lock, and with IAS (0: 4) = y (2: 6), the slave SLS should send OK1 (51) with c11 = 0;

0110 - command “Unlock symptom of SLS malfunction”. The command is intended to cancel the blocking performed earlier by the command “Block symptom of SLS malfunction”. Having accepted the command, the SLS must release the lock, and with IAS (0: 4) = y (2: 6), the slave SLS should send OK1 (51). Lock cancellation should also be performed when the command KU (0: 3) = y (11:14) = 0000 is accepted.

Broadly addressed teams sent to UK2 (48) with y (11:14) = 1110 and y (11:14) = 0001 are accepted and executed by all SLS with IAS (0: 4) = y (2: 6) or MA = 1 as follows:

1110 - the command "Record the word addressing the recipient." The command is designed to record from the leading SLS the service incoming address word of the VSAP receiver (0:15) = d (0:15) = y (15:30), which is recorded in HBCC _QG (54) as the new addressee addressing service word of the recipient AP ( 0:15). Having accepted the command, the SLS starts to execute it, and with IAS (0: 4) = y (2: 6), the slave SLS sends OK1 (51). Further, the execution of command 1110 coincides with the execution of command 1000 - “Switch the numbered SLC vector” and consists in setting the next priority numbered state vector of the HBCC _QG station (54) in the SLC, corresponding to the next priority subscriber of the sender;

0001 - the “Block / Unlock i-th transmitter” command in the LAN with the number of duplicated IDs of at least three. The command is designed to lock / unlock the transmitter of the duplicated i-th LPI. Having accepted the command from the non-i-th LPI, the SLS must block / unblock the transmitter connected to the i-th LPI, and with IAS (0: 4) = y (2: 6), the slave SLS should send OK1 (51) via the LPI, from which team was received. Lock cancellation should also be performed upon receipt of the command KU (0: 3) = y (11:14) = 0000.

Narrowly addressed commands sent to UK1 (47) with y (11:14) = 1001-1011 are received and executed by the slave SLS with IAS (0: 4) = y (2: 6) and MA = y10 = 0 as follows :

1001 — Accept Network Management. The command is designed to transfer control of the drug from the leading SLS to the slave SLS. Having accepted the command, the slave SLS after sending OK1 (51) with the sign c14 = 1 becomes the leader, and the master SLS, taking OK1 (51) with the sign c14 = 1, switches to the state of the slave SLS, otherwise the control function in the LAN continues to be performed by the SLS passing this command;

0101 - command “Send OK1”. The command is intended to receive the master SLS from the slave OK1 (51), corresponding to the last frame received by the slave SLS before this command. This command should not affect s (2:14) and the values of word bits with the signs of the built-in VSC control system (0:15) of this SLS. Having accepted the command, the slave SLS sends OK1 (51) without changing from (2:12);

1101 - command “Transfer station subscribers vector”. The command is intended for transmission to OK2 (52) from the slave to the master SLS the numbered subscriber vector of stations (NVG _QG ), which completely defines the SLS as a potential sender and / or receiver of IR (49) and having the form

NVAC _QG = {AAO (0: 4) = s (2: 6), s7 = 0, s8, s (9:14), AP (0:15) = s (15:30)}. (56)

Having accepted the command, the slave SLS should send OK2 (52), in which the service word d (0:15) = c (15:30) = AP (0:15);

0011 - the command "Send the word VSK station." The command is intended for transmission from the slave SLS to the leading service word of the built-in VSC control system (0:15) containing the VSC information of this slave SLS. Having accepted the command, the slave SLS should send OK2 (52), in which the service word d (0:15) = c (15:30) = BCK (0:15);

1011 - the command "Send the last control command." The command is intended for transmission from the slave SLS to the master OK3 (53), the information part of which must correspond to the information part of the last reliable UK1 (47) or UK2 (48) or CSS (50) with inverse bits in the determinant field except UK1 (47), containing this command. Having accepted the command, the slave SLS should send OK3 (53);

0111 - command “Send information frame”. Having received the command, the slave SLS sends to the network with c8 = 0 OK2 (52), and with c8 = 1 IR (49). After sending IR (49) with MMO = k30 = 0, c8 is reset in the slave SLS and the next priority numbered state vector of the HBCC _QG station is established (54). After receiving IR (49), an individually addressed SLS sends OK1 (51) only when receiving IR (49) with MMO = k30 = 1. The master SLS, having received OK1 (51) from the slave SLS, which had previously received IR (49) with MMO = k30 = 1, sends UK1 (47) with the command 1000 - “Switch the numbered state vector of the SLS” of the slave SLS that previously transmitted IR (49) with MMO = k30 = 1. After receiving the command 1000 - “Switch the numbered SLS state vector” in CC1 (47) in the slave SLS, c8 is reset and OK1 (51) is sent from it, and then the next priority numbered state vector of the HBCC _QG station is established in it (54).

Otherwise, the further functioning of the network is carried out from the master SLS, for example, in UK1 (47), the command 0111 - “Send information frame” is re-sent in the absence of OK1 (51) from the slave SLS, which was individually addressed in the previously transmitted IR (49) when MMO = k30 = 1;

1111 - backup command;

d (0:15) = y (15:30) - the service word, which is the service incoming word of the addressing of the VSAP receiver (0:15), transmitted to UK2 (48) by command 1110, or the word "Lock / unlock the i-th transmitter transmitted to UK2 (48) by command 0001;

CSS = k (0:31) - control word CSS (50), compiled in any SLS from the corresponding fragments of the numbered state vector of the station of the NVSS _QG (54);

IAP (0: 9) = K (2:11) = AP (0: 9) - field code of the individual address of the recipient, the code parts of which are k (2: 6) = ASP (0: 4) and k (7:11) = AARP (0: 4) are respectively the codes of the SLS addresses of the recipient and her subscriber of the recipient of the PD;

IAO (0: 9) = k (12:21) - field code of the individual sender address, the code parts of which are k (12:16) = ACO (0: 4) and k (17:21) = AAO (0: 4) are the address codes, respectively, of the SLC of the sender and its subscriber of the sender of the AP;

PSD (0: 4) = K (22:28) - excluding the sign bit, an additional code for the number of words of data of the PSD in the PD, which determines in the PD the number of 32-bit words of data of the PSD = 1,2, ..., 127, 128, respectively, by the code values ChSD (0: 6) = 1111111, 0111111, ..., 1 000 000,0000000;

MA = k29 - addressing modifier, according to which, for MA acceptance in the IR frame (49), the next one after its completion, the only recipient is addressed with MA = 0, defined by the IAP code (0: 9) = k (2:11), and when MA = 1, the SLS group is addressed to receive the AP by one or more subscribers in each SLS group, for example, by the subscribers defined by the individual SLC address of the sender of the IAO (0: 4) = k (12:16), the subscriber part of the individual AAP recipient address field (0 : 4) = IAP (5: 9) = k (7:11) and / or the subscriber part of the field of the individual address of the sender of AAO (0: 4) = IAO (5: 9) = k (17:21);

MMO = k30 is a modifier of the exchange method, such that with MMO = 0 it is forbidden, and with MMO = 1 it is allowed in IR (49) to issue the SCS code (0:15) after transmitting the AP. After receiving a reliable IR (49), an individually addressed slave SLS sends OK1 (51) to the network only with MMO = k30 = 1;

PD - a data packet consists of a continuous sequence of 32-bit data words d (0:31), the number of which in IR (49) is determined by the code BSD (0: 6) = k (22:28) contained in the equation of state (50), owned by IR (49);

SCS (0:15) * - SCS code (0:15), where the “*” sign indicates the optional presence of SCS (0:15) in IR (49), since SCS (0:15) is sent to the network only with IMO = k30 = 1 contained in IR (49);

с (0:15) and с (0:31) - information codes OK1 (51) and OK2 (52), respectively, having the same code identifiers with (0: 1) = 01;

s (2:14) - SLS status word that determines the status of any SLS so that:

s (2: 6) = AAO (0: 4) - address code of the subscriber of the sender of the AP for the organization with s8 = 1 transmission of the AP in the process of compiling and sending the IC (49);

c7 = 0 - backup bit;

c8 - in OK1 (51) or OK2 (52) the sign “Readiness of the information frame” indicating when c8 = 1 indicates the readiness for transmitting IR (49) contained in the SLS memory;

c9 — sign of “SLS readiness”, which is also a sign of direct access to memory for recording, indicating with s9 = 0 that the SLS is in self-monitoring mode, and with c9 = 1, the readiness of the corresponding parts of the memory of the SLS subsystem for access for recording AP upon reception and disassembling IR (49);

c10 = 0 - reserve bit;

c11 - sign “SLS malfunction”, i.e. SLS with c11 = 0 is good, and with c11 = 1 is faulty, and the nature of the malfunction is contained in the word VSK (0:15);

c12 - sign "Error in the frame." In each SLS, the sign of c12 upon receipt of a valid frame, except for receiving the slave SLS of reliable UK1 (47) with the command 0101 - “Send OK1” is reset to c12 = 0, and upon receipt of an invalid frame it is set to c12 = 1;

c13 = 0 - reserve bit;

c14 - the sign “Station Type”, which defines, with c14 = 0, the slave SLS, and with c14 = 1, the master SLS;

d (0:15) = c (15:30) - the service word, which is the service word of the addressee of the recipient AP (0:15) or VSK (0:15), transmitted to OK2 (52) in response to UK1 (47), respectively with a control command 1101 - "Transfer station subscribers vector" or control command 0011 - "Send a word to VSC stations";

UK1K and UK2K - respectively defined by UK1K (47) and UK2 (48) so that in each of them the code determinant y (0: 1) = 10 is replaced by inverse! Y (0: 1) = 01, where «! = N "- operator of the operation" NOT "in the language ABEL;

USK - is determined by CSS (50) by replacing its code determinant k (0: 1) = 11 with an inverse code determinant! K (0: 1) = 00.

The feasibility of the proposed technology (47) - (53) when constructing a modern specialized drug with centralized deterministic controlled access of 32 SLS with one or more duplicated drugs, for example, with the first and second duplicated drugs, with shared access, makes it possible to take into account a number of its features, the main ones which are the following.

1. The network contains the first and second duplicated LPIs with general access and no more than 32 SLS, each of which contains a subsystem, equipment of terminal subscribers (in particular, telephony workstations and managed objects, for example radio stations) and the first and second duplicated modems having the same an individual network address, which is the individual address of the station, which is determined by the IAS code (0: 4), and each of the modems contains a software transceiver and network adapter CA and is used as one of two known [1, 2] LS interface devices with a bus topology and centralized deterministic access to the LPI according to the “command-response” principle, namely, in the master SLS is used with c14 = 1 as an interface controller — the interface control unit, and in each slave SLS it is used with c14 = 0 as an interface op-amp.

Given the current technical level, in a difficult case it is advisable to build a subsystem using a single-chip signal controller with a 32-bit data bus, implemented, for example, on a domestic 1892ВМ3Т microcircuit containing a central processing unit (CPU) and a digital signal processor (DSP) for performing control functions and processing, respectively, and both CAs can be implemented on the basis of one chip, for example, on the basis of one programmable logic integrated circuit (FPGA), in particular on a chip of the Cy type clone EP1C12Q240I-7 from Altera. In such a microcircuit, each CA will have an autonomous phase-frequency frequency tuning circuit. Moreover, each SA according to [2, p.221, Fig.5.9. Organization of a block of a word / message; 19, p.138, fig. 3.8. The structure of the LAN adapter] also contains a communication unit with the subsystem [2] (in [19], an interface unit + an access control unit) designed to perform communication functions with the subsystem by interrupts from the CA and the access functions of the CA to the memory of the subsystem, the decoder a converter (in [2], a bit / word block, in [19], a reception control block), designed to convert an input serial encoded signal of a received frame arriving at the SA from the LPI through the PC into a signal of the start combination of the SC and a parallel-serial code from error detection, and the converter-encoder (in [2], the word / message block, in [19], the transmission control block), designed to convert the SC and the parallel-serial code of the sent frame to a digital encoded serial signal sent through the PP to the LPI moreover, both the decoder-converter and the converter-encoder contain a sequential computer of a 16-bit SCS checksum word (0:15), which is executed on the recommendation of MKKTTV.41 based on a technical solution [20] and contains a 16-bit synchronization th shift register with the least significant bit shifted forward and parallel output, and three exclusive-OR element.

1.1. The network contains at least two switching SLS, each of which can become the master, and all other SLS in the network are always slave.

1.2. When the network is operational and the power is turned on, one of all the switching SLS becomes the master in the network, and all the rest are slaves.

In this regard, in each SLS, there is a sign of a switching station (SPS) and a sign of switching on a master station (PVS) that program the operation of a SLS so that the SLC at SPS = 0 is always a non-switching slave (in this SLC the sign "Station type" is always reset, i.e., c14 = PPP = 0), and at PPP = 1 it is switching in which the tag c14 is formed by the trigger Tg14, which, when the power is turned on using the system reset signal, R is reset or set to the state c14 = 0 or c14 = 1, respectively by signal Rc14 =! ПБBC & R = 1 or Sc14 = ПБBC & R = 1 and, respectively -retarded determines switchable driven or leading SLS at power, where "&" and "#" "!" - the language ABEL operators "AND" operation, "NOT" and "OR", respectively.

1.3. During the operation of the network, failures can occur leading to its transition to the first abnormal state when several switching master SLS appear on the network when switching due to a failure of at least one slave switching SLS to the master state or the second anomalous state when the master SLS disappears from the network during switching it due to a failure in the state of the switching slave SLS.

1.4. Each switching master or slave SLS is equipped with the ability to detect, respectively, the first or second abnormal state of the network, upon detection of which the master or slave SLS enters into competition with other switching SLS for taking control of the network. Upon detection of an abnormal state and pause, the switching SLS, for example, by random access transmits to all other SLS in UK1 (47) with MA = y10 = 1 the global command 0000 - “Set the network to initial state”. Upon receipt of a reliable given command, any SLS, except for sending this command, is unconditionally set to the initial state of the slave SLS, and after a pause from the SLS individually addressed in UK1 (47), they send OK1 (51) in response. In the first case, having received reliably OK1 (51), the master SLS interprets it as a message about the network exit from the first abnormal state, and in the second case, in the switching slave SLS, from which they sent reliably to the network UK1 (47) with the command “Set the network to initial state ”, upon receipt of reliable OK1 (51), they establish the sign c14“ Station Type ”and leave it in the network of the only leading SLS.

1.5. Each SLS can serve up to 32 subscribers, each of which, in the interpretation of CSS (50), has an individual network number of subscriber “Q” of the sender / recipient AO _G / AP _G , defined by the IAO code (0: 9) = K (12:21 ) when IAO (0: 4) = IAS (0: 4), IAO (5: 9) = AAO (0: 4) = s (2: 6), or the network individual number of the subscriber "G" of the recipient / sender AP _G / AO _G , defined by the IAP code (0: 9) = к (2:11) = АП (0: 9), belonging to the service address word of the recipient of the АП (0:15), determined according to (55).

2. Technology (47) - (53) is invariant to the type of conversion (encoding and decoding) of any frame for transmission by a three-level or two-level optical or electric serial signal OZ, and, taking into account all the above, it is oriented to implement one of the following currently preferred , in our opinion, conversion types:

2.1. If it is possible to transmit a three-level signal OZ through the LPI, it is advisable to use the transformation {(13), (14), (15)}, proposed in [9, p.260-262] as a VTK, the use of which allows you to create SLS with the required speed with minimal hardware costs and coding of the starting combination (SC) immediately before the transmission of any frame starting with the transmission of the least significant bit of the frame identifier.

If it is possible to transmit only a two-level signal through an LPI and there are no frequency restrictions, it is advisable to use a class 1B2B code, for example, a Manchester-2 code generated according to the PPKM-2 rule (7). In this case, on the basis of rule (7), at the beginning of any frame, SK = 1, which is described as a SK-10 transform, is transmitted during the bit interval.

2.2. If it is possible to transmit only a two-level signal through the LPI and there are frequency restrictions, you can use the 4B5V and NRZI transforms to implement encoding and decoding according to the algorithms {(9.1), (10)} and {(11.1), (12)}, respectively, or bit stuffing conversion and NRZI for encoding and decoding according to the algorithms {(9.2), (10)} and {(11.2), (12)}, respectively. In each of these cases, the SC can contain a preamble (a sequence of units of a certain length for setting the bit synchronization of the CA decoder-converter) and the service symbol S = 11001 (see [15, p. 29, Table 1.1]), after the detection of which they begin to receive information part of any frame.

3. On the local network, each SLS has a decimal number N, changing from “1” to “32” and determined by the IAC code (0: 4), changing from 00000 to 11111. In each SLS _{N, there is a} zero subscriber defined by the AA subscriber address code (0: 4) = s (2: 6) = 00000, also determines in the memory of the SLC _{N the} address of the programming area for the functioning of the SLC _N , containing the programmable data packet of station N (PPDS _N )

для записи и чтения тридцати двух 32-разрядных слов программирования абонентов СПА_Z при Z=1, …, 32 и множества, например тридцати четырех, 32-разрядных слов ПСС1-ПСС34 программирования специализации СЛС_N, а именно ПСС1-ПСС32 для программирования получения ПД группой соответствующих абонентов СЛС_N в процессе приема ИК (49) при MA=k29=1, ПССЗЗ для установки флагов программного функционирования CЛC_N и ПСС34 для передачи медленных разовых команд. При этом каждое 32-разрядное слово программирования абонента СПА_Z имеет вид

for writing and reading thirty-two 32-bit programming words of SPA subscribers _Z with Z = 1, ..., 32 and a variety of, for example thirty-four, 32-bit words PSS1-PSS34 programming specialization SLS _N , namely PSS1-PSS32 for programming receiving PD by the group of corresponding subscribers of SLS _N in the process of receiving IR (49) with MA = k29 = 1, ПССЗЗ for setting the flags of programmed functioning СЛС _N and ПСС34 for sending slow one-time commands. Moreover, each 32-bit programming word of a subscriber of SPA _Z has the form

Where

Z is the decimal number of the SLS _N subscriber, changing from “1” to “32”, and defined by the code AA (0: 4) = С (2: 6), changing from 00000 to 11111, respectively;

PDAO and PDAP - signs of the availability of subscriber Z for sending and receiving IR (49), respectively;

q (0: 5) - a field for describing other additional information about the subscriber Z;

ЧСД (0: 6) = к (22:28) - a code of a number from 1 to 128 32-bit words in the data sheet belonging to the compiled and sent IR (49);

AP (0:15) - the service word of the addressee of the recipient, compiled in accordance with (55);

p - control bit, defined as the addition of all the preceding words CPA bits _Z (58) Z local programming to an odd number.

4. Based on SPA _Z (58), we determine that in any SLS _N, subscriber Z is disabled or absent when PDAO = PDAP = 0, i.e. for this subscriber, SLS _N cannot both compose and send, and receive and disassemble IR (49); with PDAO = 0 and PDAP = 1, subscriber Z is connected only for receiving IR (49), i.e. for that subscriber can IR SLS _N (49) only to receive and disassemble; with PDAO = 1 and PDAP = 0, subscriber Z is connected only for sending IR (49), i.e. for this subscriber, SLS _N can only compose and send IR (49); when PDAO = PDAP = 1, subscriber Z is connected for receiving and sending IR (49), i.e. for this subscriber, the SLS can both compose and send, and receive and disassemble the IR (49).

The memory of the master SLS _N or any switching SLS contains a programming area for the functioning of the local network for storing all DPS _N (57) as a set of programmable data packets of the local network (MPPS) of the form

containing 2112 = (66 · 32) words, each of which is 32 bits long.

When the power is turned on, each SLS _{N is} tested at c9 = 0. After that, the master SLS, in the memory of which the original MPLS (59) is contained, initializes the LAN so that for the zero subscriber of each slave SLS _{N, it} composes and sends IR (49) with the IAP (5: 9) = k (7:11) = 00000 and BSD (0: 6) = k (22:28) = 0111110, PD = PPDS _N (57) of which contains 66 words, each of which is 32 bits long.

After initialization, the LS is completely ready to work on the basis of the original MPLS (59) and software contained in the memory of the subsystems of all SLS. Moreover, in the word SPA _Z (58) for the first subscriber Z = 1, the corresponding bits and fields should have the following constant values PDAO = 1, PDAP = 1, BSD (0: 6) = 0111110 for transmission to IR (49) PD = PDDS _N (57) as a sequence of 66 words, each of which is 32 bits long.

The initial MPPLS (59) completely determines in time the initial communication plan by exchanging PD between all available subscribers of the local network, during the operation of which the corresponding fragments of MPPPS (59) can slowly change, for example, when establishing and disconnecting communication between the corresponding telephone subscribers.

5. The state of each SLS _N as an element of the network N, determined by an individual IAS station address code (0: 4), is completely determined by PPDS _N (57) and the set of numbered station state vectors {NVSS _QG (54)} intersecting with it.

Using the leading SLS _N , using each numbered NVCC vector _QG (54) installed in it, active at (c8 & c9) = 1, they are sent to the IR network (49) in the corresponding time interval.

After receiving the SLS after receiving CC (47) with command 0111 - “Transmit information frame”, depending on the value (c8 & s9), IR (49) is transmitted at (c8 & s9) = 1 or transmission from (15:30) = AP (0: 15) in OK2 (52) with (c8 & c9) = 0.

In the process of functioning, drugs organize in the leading SLS sequential reception and processing from all SLS of all NVG _QG (56), which are rarely accepted at c9 = 0 (SLS at c9 = 0 is in self-monitoring mode and is not available for PD exchange), and with c9 = 1 more often with the pace determined by the specialization of drugs as a small automation system, determined by the architecture of its SLS. The processing of the set of {НВСС _GQ (54)} is implemented on the basis of the MPLS (59) and the software of the leading SLS, which receives processing its NVAC _QG (56) from its memory, and all the other NVAC _QG (56) from each slave SLS receives OK2 (52) by command 1101 - “Transmit station subscribers vector” or with (c8 & c9) = 0 in response to UK (47) with command 0111 - “Send information frame”.

In the process of processing each NVAC _QG (56) belonging to NVGS _QG (54), the leading SLS can replace the AP (0:15) in it with a new VSAP (0:15) in the process of executing command 1110 received in UK2 (48) - “ Write down the recipient’s addressing word ”, according to which VSAP (0:15) = d (0:15) = y (15:30) as a new AP (0:15) in SPA _Z (58) is written in the slave SLS first, and then establish the next NVSS _QG (54) using the next SPA _Z (58) with PDAO = 1 for the next in line AO _QG . In addition, in the slave SLS, the establishment of the next NVSS _QG (54) is carried out by the command 1000 - "Switch the numbered state vector of the SLS" or after transmitting any SLS IR (49) with MMO = 0.

6. In view of what has been said in the leading SLS, the information process of compiling, sending to the network and receiving from the network and disassembling six types of frames (47) - (49), (51) - (53) is carried out using the process of processing and storing in the memory of the leading SLS the current set {NVAC _QG (56) for c9 = 1, PDAO = 1} for all AO _{QGs of} all SLS of a network c based on the classification (definition) of numbered states AO _QG with c9 = 1 depending on the values of bits c8, МА = АП10, IMO = AP11, PTA = AP12, AP13 TID =, = PVV = PNVA AP14 and AP15 so that the PTA = 0 define numbered passive (PS _QG) or active (AC _QG) STATUS ie the subscriber machine _QG SA on the basis of expression

and with PTA = 1, one of the following six numbered states of the human subscriber AO _{QG (or GQ) is} determined, namely:

standby state (CO _{QG (or GQ)} ) of an incoming or outgoing call or transition to the established state of circular communication

Outgoing call status (SIWTS _{QG (or GQ)} )

state of incoming telephone call (ATSS _{QG (or GQ)} )

telephone unavailability status (SNATS _{QG (or GQ)} )

the state of established telephone communications (QTS _{QG (or GQ)} ) between two AO

state established multicast connections (SUTSS _{QG (or a GQ))}

Where

Q (or G) - the IAO code (0: 9) = k (12:21) defined in IK (49) is any individual network number of the subscriber of the sender _QG JSC (or JSC _GQ ) indicating the individual network number G (or Q) of the subscriber the recipient of the AP _GQ (or AP _QG ) defined by the IAP code (0: 9) = k (2:11).

7. Next, we will consider sequentially the implementation in the network of automatic communication, semi-automatic telephone communication and semi-automatic circular communication, which are used to implement telephone and / or circular communication between workstations in the network.

7.1. In each SLS with c9 = 1, the corresponding subscriber-machine, the sender AO _{QG, is} defined in SPA _Z (58) with PDAO = 1, MA = X, MMO = 1 and PTA = 0. In this case, the installation of such AO _QG in the numbered passive state of the PS _QG (60.1) can often not be done, since it only leads to transmission to the network from the slave SLS OK2 (52) with s (0:15) = AP (0:15) in response to the reception from the leading SLS UK1 (47) with command 0111 - “Send information frame”. In each SLS, _QG AS installation in the active state of _QG AS (60.2) is carried out automatically with a frequency determined by the specialization of the network as a small automation system. In this regard, in any SLS at the corresponding time using the SPA _Z (58), the next numbered subscriber vector of the NVAC _QG subscriber is established (56), which determines the active numbered state of the subscriber-machine AS _QG (60.2), which means the readiness of the SLS for IR transmission (49) . From the master SLS, this IR (49) is sent to the network in the appropriate period of time, and from any slave SLS this IR (49) is sent to the network only after receiving the CC (47) with command 0111 - “Send information frame”.

Then, in any SLS after sending to the IK (49) network with IMO = 1, the following NVAC _QG (56) is set only upon receipt of command 1000 - "Switch the numbered SLS state vector" from the leading SLS in UK1 (47).

After receiving IR (49), an individually addressed slave SLS sends OK1 (51) only when receiving IR (49) with MMO = k30 = 1. The master SLS, having received OK1 (51) from the slave SLS, which had previously received IR (49) with MMO = k30 = 1, sends UK1 (47) with the command 1000 - “Switch the numbered state vector of the SLS” of the slave SLS that previously transmitted IR (49) with MMO = k30 = 1. After receiving the command 1000 - “Switch the numbered vector of the SLC” in the slave SLS, they send c8 and send OK1 (51) from it, and then they establish the next priority numbered state vector of the NVSS station _QG (54).

7.2. In each SLS with c9 = 1, the corresponding telephone subscriber, the sender AO _QG (or _GQ ), is defined in SPA _Z (58) with PDAO = 1, PDAP = 1, MA = 0, IMO = 0 and PTA = 1 so that in telephone communication (TS) any two network subscribers can participate, for example, the calling “Q” and the called “G”. Therefore, the calling _QG AO can implement a TS session in the network with an accessible _GQ AO called, described by the state transition graph _QG AO (GGCAO _QG ) and the state transition graph AO _GQ (GCAO _GQ ). During the session, these graphs describe the trajectories of the states AO _QG and AO _GQ according to the expressions

A communication session {(67), (68)} begins with the user picking up the handset “Q” and dialing the number of the called party “G”, which leads to the transition of the AO _QG from the standby state of _QX CO to the state of the CIMS _{QG of the} call by the subscriber “Q” of the subscriber “ G ". The establishment of communication between the Q and G subscribers of the slave SLS is carried out under the control of the master SLS using three commands: the command 1000 transmitted to UK1 (47) - “Switch the numbered SLS vector”; transmitted in UK2 (48) command 1110 - "Record the word addressing the recipient"; transmitted in UK1 (47) command 0111 - "Transmit information frame". At some current point in time, the leading SLS, in response to command 0111 - “Send information frame”, receives in NV2 (52) the NVAC _QG (56) vector with SIWTS _QG . In response to OK2 (52), sends to UK1 (47) the command 1000 - "Switch the numbered SLS vector", and also selects and remembers the AP code (0:15) _G and the VSAP code (0:15) _G , which respectively determine the subscriber numbers “G” and “Q”. Next, the leading SLS on some next command 0111 - “Send information frame” receives OK2 (52) with the next HBAC _ZX (56) with CO _GX so that according to the AP code (0: 9) _G at G = Z they detect NVAC _GX (56 ) with CO _GX , which means that the called party “G” is idle. In this case, the master SLS sends to UK2 (48) the command 1110 - “Record the recipient’s addressing word”, according to which the slave SLS first replaces the AP (0:15) _X with the incoming VSAP recipient address word (0:15) _Q , which corresponds to the transition of the called subscriber “G” to the state of ATSS _GQ , and then the vector is switched (56).

Upon detection of this event (transition to ATSS _GQ ), the called subscriber “G” picks up the phone, which causes the transfer of AO _GQ from ATSS _GQ to SUTS _GQ . At some current point in time, the leading SLS, in response to command 0111 - “Send an information frame”, receives in OK2 (52) the NVAC _QG (56) vector with SIVTS _QG with SUTS _GQ . In this case, the master SLS sends to UK2 (48) a command 1110 - “Record the addressee address word”, according to which the slave SLS is first replaced by the AP (0:15) _G by the VSAP (0:15) _G , which corresponds to the transition of the called subscriber “Q” is in the QTS _QG state, and the vector (56) is switched.

When CYTC _QG and SUTS _GQ between subscribers «Q» and «G» set TS, which is realized in such a way that in the processing NVAS _QG (56) with SUTS _QG (or NVAS _GQ (56) with SUTS _GQ) always acts with c8 = 1 so that on command 0111 - “Send information frame” send IR (49) from the subscriber “Q” (or “G”) to the subscriber “G” (or “Q”). After the end of the transmission, IR (49) in the sender switches NVAC _QG (56) from QTS _QG (or HBAC _GQ (56) from QTS _GQ ) without changing, if the sender is in a state of established communication (65), or with transfer to SNATS _{QG (or GQ)} (64), if the sender “Q” (or “G”) hung up, he entered the standby state (61). When this event is detected, another “G” (or “Q”) subscriber hangs up, which causes the “Q” and “G” subscribers to return to the initial states of Q _QG and CO _QG, respectively.

If the subscriber “Q” belongs to the leading SLS, and the subscriber “G” belongs to the slave SLS, then all operations to control the trajectory of the state of its subscriber “Q” are carried out in time in software in the most leading SLS according to GPSAO _QG (67).

If the subscribers “Q” and “G” belong to the leading SLS, then all operations to control the trajectories of the state of its subscribers are carried out in time in software in the leading SLS according to GPSAO _QG (67) and GPSAO _GQ (68).

If at the beginning of the organization of the TS session between subscribers “Q” and “G”, when the NVAC _QG (56) arrives from the SIVTS _{QG, the} subscriber “G” is inaccessible (when the subscriber “G” is busy or disconnected from the network), then the state path of the calling AO _{Q is} described by the transition graph GPASAO _{QG of the} form

7.3. Subscribers of the group {AO _{QG (or GQ)} } participate in circular communication (CA) so that with c9 = 1, МА = 1, ММО = 0, and PTA = 1, any AO _{QG (or GQ)} group sets up at the workplace the CA switch is in the “CA is on” state and, using a microphone, transmits a voice message simultaneously to all other subscribers of the {AO _{QG (or GQ)} } group, which are addressed to the IR (49) CA by the IAO code (0: 4) = k (12:16 ), as well as the IAP code (5: 9) = k (7:11) and / or the IAO code (5: 9) = k (17:21). In each SLS participating in the CA, the subscribers receiving IR (49) CAs are determined using the IAO code (0: 4) = k (12:16), which addresses one of the words PPSS1, ..., PPSS32 (contained in PPPS _N (57) ), the corresponding single bit of which, addressed by the IAP code (5: 9) = k (7:11) ≠ 00000 and / or the IAO code (5: 9) = k (17:21) ≠ 00000, fully determines when receiving IR ( 49) in one SLS, up to two CA subscribers. After the message is sent, any AO _{QG (or GQ)} group returns the CA switch to the "CA is off" state. Therefore, in the CS, the trajectory of the state of any AO _{QG (or GQ)} group is described by the transition graph of the QPSA _{QG of the} form

If all SLS networks are involved in the DS, then in each SLS for each DS subscriber a mixing operation can be performed for up to 63 DS voice signals.

8. According to (47) - (53) and clause 7.1, in the absence of failures, the full transmission format of one AP from SLS _j to CLS _k (FPPD (SLS _j → SLS _k )) both for SLS _j ≠ SLS _k and for SLS _j = SLS _{k is} described for IMO = 1 by the expression

Where

UK1 (0111)-UK1 (47) with the command “Send an information frame”;

УК1 (1000) -УК1 (47) with the command "Switch the numbered state vector of the SLS".

On the basis of (1), (5) and (71), the overhead for the transmission of one AP in the format (71) without taking into account the costs of transmitting the AP itself and the cost of transmitting an SC in one bit are estimated as

and the quality of the specific drug implementation described above is estimated by the vector

coinciding with the required vector (16) with CPC = 6 and NKBI = 141 bits.

Comparing (45) with (72), we obtain

that at CLC _j ≠ CLC _{k, the} overhead of the proposed technology is approximately 92% less than the overhead of the technology [18].

When BSD = 8, comparing (46) with (72), we obtain

that with SLS _j = SLS _{k, the} overhead of the proposed technology is on average 231% less than the overhead of the technology [18].

Directly from the descriptions of the analogue [1], prototype [18] and the proposed method of operation of drugs, it follows that, thanks to essential features, the proposed method provides, in comparison with the prototype [18], an increase in the quality of drugs due to both providing a mechanism for the automatic exit of the network from the first or second failed anomalous the state, respectively, when more than one leading SLS appears in it or the leading SLS disappears from it, as well as a decrease in the number of frame types from 12 to six and a reduction in overhead when transmitting PD from one PM to the other by 92% (see. The estimate (74)), and between subscribers audio SLS driven by an average of 231% (see. The estimate (75)).

In addition, in comparison with the prototype [18], the use of the proposed method of working with drugs in the construction of a small automation system makes it relatively easy to implement telephone communications (see clause 7.2) and circular communications (see clause 7.3).

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Claims (1)

The method of operation of a local network, which in working condition contains one switching master station of the local network (SLS), many switching and non-switching slave SLS and one data line or several duplicated ones with shared access and centralized deterministic control of the exchange of messages between valid subscribers of all SLS based on the partition messages to data packets (PD) and transmission of PD in information frames during the implementation of the information process in the network by compiling, sending to network and receiving and disassembling control, response and information frames under the control and control of the controlling SLS when sending each frame of the information process after detecting a pause so that either one of the control frames is sent from the leading SLS or one of the response frames from the corresponding slave SLS, or send an information frame with a resolved checksum word (SCS) from the master or corresponding slave SLS, while the frames are made using the start combination, a two-bit field limiter, field of individual SLS address, control command field, 16-bit service words, PD field with permitted SCS, PD length field for determining the number of data words in the PD field and the control bit contained in any control or response frame and defined as an addition to the number all previous information unit bits of the frame to an odd number, characterized in that the method is carried out by compiling, sending to the network, receiving from the network and disassembling two types of control frames, information frames one type and three types of response frames, while in the information process senders of frame types and the order of their sequence are determined taking into account the state of the network, namely the working or the first anomalous state that occurs when more than one switching master SLS appears at the same time during switching due to failure of at least one slave switching SLS to the master state or the second abnormal state, determined by the absence of the master SLS in the network when switching due to the failure of the master SLS to the slave state, and with setting the frames so that the first control frame contains the start combination, the determinant field, the field of the individual SLC address, addressing modifier, the control command field and the control bit, the second control frame contains the start combination, the determinant field, the field of the individual SLC address, addressing modifier, command field control, different content from the contents of the control command field of the first control frame, the service word and the control bit, the information frame contains a starting combination, controlling the catch formed by the qualifier field, the field of the individual address of the recipient defining the individual address of the SLS and the address of its subscriber of the recipient PD, the field of the individual address of the sender defining the individual address of the SLS and the address of its subscriber of the recipient of the PD, the field of length of the PD determining the number of words of data in the PD addressing, the single value of which is addressed to the SLS group for receiving the AP by one or more subscribers of each SLS of the group, namely the subscribers defined by the individual SLS address the subscriber part of the field of the individual address of the recipient and / or the subscriber part of the field of the individual address of the sender of the PD, the modifier of the exchange method and the control bit, the field of PD and SCS allowed by the unit value of the modifier of the exchange method in the control word, in which the value of the control bit is defined as the addition of the number of all the unit bits preceding the control bit to an odd number, the first response frame contains the start combination, determinant field, SLS status word and control bit, the second response dr contains the start combination, determinant field, SLS status word, service word and control bit, the third response frame is the first or second control frame with inverse bit values in the determinant field, or an information frame with excluded PD and SCS fields and inverse bit values in the determinant field, the code of which in the first or second control frame is “10”, in the information frame is “11”, in the first or second response frame is “01”, and the SLS status word contained in the first or second response frame e, make up in each SLS so that it contains the sender’s subscriber address field and the signs “Information frame readiness” for sending to the network an information frame with the subscriber’s PD determined by the contents of the sender’s subscriber address field to the recipient defined by the contents of the recipient’s address word information frame, “SLS readiness”, which is also a sign of readiness of receiving an information frame from the network, “SLS malfunction”, “Error in frame” and “Station type”, defines null or single value, respectively, of the slave or master SLS, in addition, in each SLS, a numbered SLS state vector is formed, containing the field of the individual address of the SLS, the information part of the third response frame, the determinant field and the length field of the PD for composing the information frame, the information word of the first response frame, the service word of addressing the recipient of the information frame and the service word of the integrated control system, while the contents of the fields of the individual addresses of the sender and recipient and the formation frame determines the number of the numbered state vector of the SLS, the corresponding parts of which in any SLS make up the control word of the information frame to be sent, and in each slave SLS, the information parts of the first, second or third sent response frame, and the received first control frame with the control command “Send an information frame” from an individually addressed slave SLS when ready or not ready, an information frame or the second response frame with the addressing service word of the recipient of the information frame, the second response frame with the desired service word is sent to the network from the individually addressed slave SLS also in response to the received first control frame with the corresponding control command, the first response frame is sent to the network from the individually addressed slave in response to the received information frame with a single exchange modifier or the first control frame with the corresponding control command code or the second control to dr, for one of the values of the control field of which the command “Record the addressee addressing word” is executed, the execution of which first replaces the service word of addressing the recipient of the information frame with the service word of this received second control frame, and then switches the numbered state vector, which is also switched after receiving the first control frame with the command "Switch the numbered SLS state vector", and the third response frame is sent to the network from an individually addressed home SLS in response to the first control frame with the “Send the last command” control command, at any value of the addressing modifier, the first or second control frame is sent to the network to an individually addressed slave SLS to execute any valid control command, at a single value of the addressing modifier first or second the control frame is sent to the network during multicast for all SLS to execute only those control commands that are suitable for multicast execution, the information length is first about the control or first response frame is 16 bits, the information length of the second control frame or control word of the information frame or second response frame is 32 bits, in each frame the stream of information bits is sent to the network after the start combination with the least significant bit forward, in the information frame SCS is calculated first by the flow of information bits of the control word, and then by the flow of bits of the PD field, the leading SLS is equipped with the ability to detect the first abnormal state of the network (the simultaneous appearance in the network of how many leading SLS in case of network failure) by detecting distortion of the control frames sent by it or the appearance of another leading SLS in the network of control frames, and each switching slave SLS is equipped with the ability to detect the second abnormal state of the network, namely the disappearance of the leading SLS from the network in the event of a network failure due to detection the duration of the pause exceeding the threshold, when a first or second abnormal state of the network is detected from the master or switching slave SLS, the random access method is sent to the network a control frame with the command "Set the network to its initial state", upon reliable receipt of this frame, any SLS other than the one sending this frame is unconditionally reset to the slave SLS, and the first response frame is sent to the network from any individually addressed SLS, in the first case receiving a reliable first response frame is interpreted in the master SLS as a message about the transition of the network to the working state, and in the second case, in the switching slave SLS, from which the first control is sent reliably to the network If the frame with the command “Set the network to its initial state” is received, upon receipt of a reliable first response frame, the sign “Station type” is set and it is left in the network as the only leading SLS.