DE2000930B2 - DATA PROCESSING SYSTEM - Google Patents

Description

The invention relates to a data processing system with one or more input-output channels with control units for the transmission of control and request signals and one or multiple input-output control units.

In such systems, information should be transmitted to and from the channels. For this it is necessary first select the channel that is to be operated. Stand the Kanrien on the several units opposite the other side, one must also be selected from these units, which should connect to a channel. The information transmitted can be from both Data, commands as well as control signals. In such systems are so facilities for Selection of the connected units and channels as well as to differentiate the type of transmitted Information necessary. In data processing systems with extremely high processing speeds these facilities are not working satisfactorily. Often there was rapid availability of the channels or the units in communication with the channels. Also let the reliability these facilities left much to be desired. In the known connection units were previously Relays or transistors used. Devices with relays work too slowly, even when in use of transistors, those caused by the signal propagation time in the transistors had an effect up to now Delays are annoying.

U.S. Patent 3,336,582 discloses a device known of the type described above. In this facility, a first unit (e.g. a central data processing unit) with several second units (e.g. input-output devices) optionally connected. For this purpose, three trunk groups are provided in the facility mentioned. Data, addresses of input-output devices as well as Transmit commands. Signals are transmitted over the second bundle of cables, which the Art of the information in the first trunk group. Selection control signals are transmitted over the third trunk group which control the flow of information and convey priority information. It is clear that such devices with several trunk groups for the connection of a large number from the first devices with a large number of second devices in high-speed installations no longer are useful

A matrix-like transmission device is known from the German patent application 1118 506. Several storage devices are connected to several processing units by means of an electronic crossbar switch. Each processing unit is assigned a special storage device (TM, FIG. 3) which stores the address of the partial memory connected to this processing unit in order to avoid multiple allocations.

This type of special storage of the condition of the bed the switching matrix is complex and requires additional steps in the program control the data processing system for checking the occupancy status.

The invention is therefore based on the object of a reliable, modular device for selectively connecting one or more units of a first group with one or more To create units of a second group, which optimal use of the connected Units and a quick connection setup guaranteed.

The invention is characterized by a matrix switching unit consisting of several levels a first sub-unit for connecting the channels to the control unit or units and a second

ίο functionally with the first connected sub-unit for storing the occupancy status of the matrix connection points in the first sub-unit and switching control units associated with the channels with interrogation lines, which indicate the occupancy status interrogate in the second subunit status signals received via status reception lines evaluate and send signals to through lines to through ou ^ r interrupt the Create connection points in the first subunit.

The device according to the invention .veist has a low susceptibility to failure. because the switching controls are decentralized. If a lower part fails, the whole system can continue to function.

The possibility of connecting several connection paths at the same time results in a high degree of use of the units connected. The modular structure also results in the line direction according to the invention the possibility of easily changing the number of units connected. The central detection of the occupancy status of the first sub-unit by a functionally connected second subunit enables the spatial concentration of the switching functions and occupancy protection. This can cause signal propagation times when querying the occupancy status can be kept small and becomes logically easier Functional sequence achieved. When the occupancy status is queried, existing connections not disturbed, whereby a quick and complete query is made possible in a simple manner.

Another particularly advantageous embodiment of the invention is characterized in that in the Matrix junction transistors are used by the gating signal at the base driven into saturation and kept in saturation during the signal passage and fed by the signal voltages from the channel and v) i: the input-output control unit will.

Since this means that the transistors in the matrix switching unit itself can be omitted, this results the advantage of being able to build the matrix switching unit small. A special cooling of the Matrix switching unit is omitted. Due to the way the transistors are controlled, there will be a small signal delay and largely constant impedance ratios can be achieved.

Another advantageous embodiment of the invention is characterized in that the transistor driver stage a non-switched transistor ar of the base with a signal of one of the polarities of the switching signal opposite polarity 'controls.

This can prevent crosstalk can be largely reduced between the individual connection paths.

According to another, particularly advantageous

Training a body control unit is provided, with a command register and decoder for receiving commands from the associated channel, which Commands specify the setup options that are provided by the switching control when switching through the connection points and are taken into account when sending response signals.

The body control unit receives and decodes commands from the assigned channel and can thereby Forward signals to the switching control which indicate to the sound control which connection point c the shift control can switch through. If an interface device z. B. with several Connection points connected, it can be achieved in this way that a certain connection point remains connected exclusively to a certain channel, so that a control unit this interface device only works with this channel. Here, for the no restrictions are provided for other connection points connected to the interface device be. Another set-up command can e.g. B. provide that a Schnhtstclleneinrichtung with several Channels cooperates, provided that there is no connection point of this interface device exclusively connected to a channel. Further setup commands can solve existing connections cause or temporarily block the control of certain connection points. The body control unit In other words, it represents a higher-level facility for which connections allowed are.

Another advantageous embodiment of the invention is used for dynamic multiple connection between Channels and input-output control units and is characterized in that via the Stop control unit request signals and other control signals from the channels to the input-output control units and from the input-output control units Response signals are supplied and that means are provided for monitoring the input-output control units are responsive to response request signals of these control units and these response signals and send control signals to the channel associated with the device concerned.

This allows each channel to meet any control unit service request regardless of which channel originally started that particular input-output operation.

In the following an embodiment of the invention is explained in more detail with reference to the drawings. It shows

F i g. 1 is a block diagram of the system according to an embodiment of the invention;

F i g. 2 is a block diagram of the shift control 12 of FIG. 1,

F i g. 3 is a block diagram of the assembly control unit 14 of FIG. 1 and 2,

F i g. 4 is a schematic view of the crosspoint switch included in the switch matrix 10 of FIG F i g. 1 and 2 is used,

F i g. 5 is a diagram of the base charge distribution of the transistor of FIG. 4,

F i g. 6 schematically shows a driver circuit for driving the direct off line of the crossing point of FIG. 4,

Fig. 7 is a schematic representation of a scarf

device for driving the transmission line of the crossing point of Fig. 4,

F i g. 8 is a schematic representation of a circuit for driving the receive line of the crossing point the F i g. 4 and

Fig. 9 is a block diagram of a decoding circuit for decoding an interface address and energizing the direct OUT line for it Interface.

Table of contents

1. General description of the interface switching unit

2. Bodywork control unit

2.1 Addressing

2.2 Operations

2.3 Construction states

2.3.1 Exclusive construction state

2.3.2 Split construction state

2.3.3 Exposed structural condition

2.3.4 Unassembled condition

2.4 Basic command c

2.4.1 Command for non-operation

2.4.2 Command for I / O check

2.4.3 Basic sensing command

2.5 Setup commands

2.5.1 Build up only

2.5.2 Build and share

2.5.3 Resetting and setting up

2.5.4 Loosen and cancel

2.5.5 Dismantle

2.6 Sensing commands

2.6.1 Sense authorization status

2.6.2 Sensing the overall structure

2.6.3 Sensing the channel structure

2.7 Authorization states

2.8 Set authorization register

2.9 state

2.9.1 Caution

2.9.2 Status modifiers

2.9.3 Control unit end

2.9.4 Occupied

2.9.5 End of channel

2.9.6 End of units

2.9.7 Unit check

2.9.8 Units exception

2.10 Interface sequences

2.10.1 System reset

2.10.2 Optional reset

2.10.3 Interface separation switching control

3.1 Interface addressing

3.2 Operating states

3.2.1 Excluded State Assigned State First selection sequence Control unit end Interface selection sequence Initiated by the control unit

3.2.2

3.3

3.4

3.5

3.6

4. Switching matrix

5. Versions of the interface switching unit

5.1 Multiple interfaces per channel

5.2 Extended unit addressing

5.3 Manual permanent state

5.4 Manually controlled assembly

5.5 Manually controlled division

5.6 Dynamic divider addition

7 8

6. Address register comprising input-output interface accessories

6.1 New separation point lines routed out from the I / O interface and through the

6.1.1 Reset from 1-OFF-8 decoder decoded. The tension on

6.1.2 Solution ON the switch-on line is raised and the

6.1.3 Priority ON 5 Binding lock switched on.

6.1.4 Structure OFF The output signal from the decoder is dur-ih

. the connection lock is directed and the direct

1. General Description OUT line 4 energized. The shift control over-

the interface switching unit _{watches over other} connections by energizing the

The interface switching unit "OFF control lines 0, 2 and 3 (FIG. 1)" shown in FIG. 1.

comprises a matrix switching unit 10, which is more precisely in channel 3 with the interface 4 in connection,

Fig. 2 shown switching controls 12 and a separation is forced because the direct ON-

structure shown in more detail in Fig. 3 - control input line is energized and the OR circuit is energized,

is called 14. the ^m · ^{1 is} the reset input for the connection

The matrix locking system, which consists of several levels, is connected. The OFF control switch unit 10, in the following simply switching matrix lines are also used to denote a, forms the electrical crossover points correct interface connection for a specific (hereinafter also referred to as nodes) to reserve the channel.

between the channels 16 and the interfaces 18, the circuit 44 of a switching control (FIG. 2) which are connected to the control units 20, ao contains an interlock for each I / O interface. This part of the switching matrix 10 is referred to as the line part Ob a channel to a specific interface and takes over the switching function. Which can be closed or not, is determined by the lower four levels of the switching matrix 10 include the position of the associated interlock, the control part and are used to set the interlocks are set, sensed and the nodes of the line part of the switching 35 are reset , only due to setup commands to display matrix. Each channel not only has the option to

With each channel 16, a switching control 12 is connected to determine whether an interface is reserved or not, and a construction control unit 14 is connected. Which but also for which channel it is reserved. Switching control connects and disconnects the nodes. In addition, a channel can set a provision for points in the switching matrix 10 in accordance with the activity. A reserved interlock in another Kakeit of the I / O interface. Switching control is enforced if it is instructed to do so by a corresponding unit that commands the CAN and the control unit. This is transparent, ie the channel actuates the I / O forced reset is carried out in a similar way to the Tren interface as if the switching control actuated an interface. If a reservation were not connected. 35 locking by another channel back -

The assembly control unit 14 works in connection, informs the channel whose interlocking with the channel 16, the control part of the circuit at this point in time, its matrix 10 and the switching control so that the central unit can be disconnected from this commands received automatically through a subchannel breakout, or the central unit is routed via these, the connections in the switching matrix are informed of 40 conditions if it tries to establish the switching control when entering and the actual routing of a new operation connection to this position of the switching matrix by means of their control part to get interface. A channel that can be felt. serving lock is reset while

The posture is sensed as follows. Which it is actually connected to an interface,

Switching control 12 establishes a connection between 45 responding to this condition by giving a

the I / O interface of a channel and the I / O normal interface separation attempted. Runs

Interface 18 of a control unit in that this attempt was unsuccessful due to a failure,

the direct OUT line is energized . The direct uses the requested channel a stronger means,

OFF line energizes crossing points in a vertical to force a separation. The requesting

cal line that defines the four levels of the control part of the 5 ° channel when instructed accordingly

Switching matrix includes. The sensing takes place with the help of its central unit a direct cross-point separation

the body control unit force a signal to the OFF if the channel does not respond.

Control line 0 to 3 gi An output signal occurs. H. the division of

on the direct IN line for the corresponding I / O control units under one or more channels

the channel in all of the matrix positions (in the control channels on a dynamic basis without intervention

part of the switching matrix), in which a crossing point of the channel, is either used by the control unit

closed is. This is a direct display for a body control unit or with manual switches

direct OFF lines that are energized. The cross was taken over and the switching connections

point switches of the control part of the switching matrix are set

den provided for all channels, so that 60 The selection logic 34 of each for a channel

each channel the position of another channel prii- schnittstelle associated switching control (Fig. 2) is used

can open. to override the selection or call sequences

In FIG. 9, the switching control can monitor the connections initiated by the channel. IMe Am-

with the help of the OFF control lines over-selection logUc 34 responds to a selection sequence by

watch and disconnect when connected through 65 they get the address on the output bus

another circuitry is made. via the AND circuit 40 and the OR switch

VVenn z. B. Channel 1 to the I / O interface Num- tang 42 to the interlocks 44 for interface

If mer 4 is connected, the three-bit position and control is diverted. The logic 44 selects

ίο

the interface specified by the address, the operating system and the interface switching unit and the interface node remains occupied until shown. The structure control unit has options for checking, setting and resetting the structure that is available for the channel for bad operations. A later selection or selection sequence for the interface unit as well as to determine which other address is given by the channel, the nodes of the connected channels are authorized to take over the structure control of the switching unit.

The body control unit is connected to the system via an I / O interface or a pseudo interface (selected by the shift control) in

If the interface is for another channel ίο connection, and all transmissions between is set, the control unit gives a control unit - the body control unit and the channel are done as Busy status (short sequence) back to the channel that initiated the dialing sequence.

The selection logic 34 responds to a selection sequence from the interface 32 by selecting one unused interface of the highest priority,

ten point free.

A selection sequence for an addressed node that is not available results in »Selection ON« is returned to the channel.

with any other control unit on the interface. 2.1. addressing

which has an operating request, d. H. the output of logic 36. If no requests pending, a »selection ON« is returned to the channel.

An asynchronous status (end of units, attention, etc.) can be selected by a channel, if the corresponding node is not occupied. The switching control remains on an interface

The build control unit receives a consecutive set of addresses (address logic unit 70) on the I / O interface assigned which is equal to the number of interfaces connected to the interface switching unit can be connected. Thus, the body control unit would be for a 4x8 switch unit (i.e. a switching unit that switches four channels between eight interfaces or control units) need eight addresses. Every address belongs

connected when a request is outstanding - 25 once to an interface, so that the first address remains and the channel does not dial. to interface 0, the second address to

The construction status that the switching control is related to interface 1 etc. A single interface {δ. B. Bcicchtigungsbefehlc) or the structure control 14 set. The setup 3 ° relate can be sent to any of the address control unit (Fig. 3) sets the setup statuses, and supplies information relating to the status of the switching matrix to the channel via the I / O interface. The structure control unit comprises devices for checking, setting and resetting the structure of the switching matrix as well as devices for controlling the structure of the connected channels.

The channel is in connection with the body control unit in the same way as with any other control 40 body commands, sensing commands and authorization unit of the interface. The body control unit commands (BewUligungsbefehle). These commands can be connected directly to the I / O interface on the channel side of the switching matrix (see Fig. 1) or to a pseudo-interface on the control unit side of the switching matrix (see Fig. 2). The construction control unit responds to commands from the channel via the interface 60. These commands are passed through AND circuit 66 to command decoder and register 74. They include basic commands, setup commands, sensing commands and authorization commands. The commands decoded by the command decoder 74 are transmitted to the switch control unit (FIG. 2), where the interface status and control latches 44 execute the command by energizing appropriate node drivers 46. 55, the body controller sends status information relating to the switch matrix 10 with the aid of the states returns it receives from the sensing and status generator and the register logic has received from the switching controller 76 If this Abfuhldaten be obtained 60 from the channel, passes dit Selection ^{L WIU υιυυ} logic and sequence control 62 the corresponding in-

2.2. Operations

All operations carried out by the body control unit are carried out on the basis of commands that the unit by means of the output line on the I / O interface is receiving. These commands can be divided into four groups: Basic commands.

passed via the AND circuit 66 to the instruction decoder 74. Their assignments are as follows:

Command code

1 0000 00Q0
1 0000 0011
0 0000 0100

0 0010 0011

1 0110 0011
0 1110 0011

0 1010 0011

1 1100 0011

1 1000 0100 1 0100 0100

command

Basic commands Check I / O

No operation control basic compensation

Setup commands

Build up, build up and split up, set up and build up Loosening and picking up dismantling

Sensing

Feel the authorization states Feel the overall structure Sense the channel structure

formation via the AND circuit 82 to the IN line.

2. Bodywork control unit

The structure control unit shown in Fig. 3 provides a device for connection between the

0 100 0011

authorization Set authorization register

The operations to be carried out by the structure control unit are initiated by the central unit with a START I / O instruction

Λ.

2.3. Construction states

In this context, the term "structure" refers to the structure, i. H. the circuitry planned production understood a connection. The construction states of the tracks in a switching unit are both determined by the states of the nodes as well as those of the interface. The one about the control part the position of a node signaled by the switching matrix 10 (see FIG. 2) defines the relationship between a specific interface and a specific channel. The state of an interface is the sum of all positions of nodes belonging to this interface. The positions of the Nodes are explicitly defined by the bodywork control unit in one of the following ways:

1. One executed by the body control unit Builds up -! Fails.

2. Manual body controls.

3. An unconditional one carried out by another body control unit of the interface switching unit Build command.

4. A general reset of the system. (See Reset OFF, section.) ^A 5

The positions are determined by the switching control interface position logic 44 to set the on the basis of I / O instructions, build instructions and Schniiiäteilen-Bcdicnungsanicrderungen to unterseil- 3 = Menden steps. The status information is still made available to the program by sensing commands that are executed by the body control unit.

2.3.1. Exclusive construction condition

35

An interface is said to be set up exclusively if one of its nodes is exclusive for a canal is built. An interface can thus be set up as defined for one and only one channel be. With such a structure, each service request from a unit on the Interface only routed to the channel for which the interface is set up. The reverse is the case Units on the interface are only available to the channel for which the interface is set up exclusively is.

2.3.2. Shared construction state

An interface is said to be in the shared construction state if one or more of its nodes are in the shared construction state. A node is in this state if the associated interface can be shared with another channel. This setup allows the devices to work with more than one channel without intervening setup commands having to be executed (see section 5).

2.3.3. Exposed construction condition

An interface in this state is, in spite of its exclusive structure, for a single channel prevented from connecting to this channel. All operating requirements of units the interface are withheld and not passed on to the channel. Similarly, all attempts by a channel to use these units are on the

60 interface to connect, unsuccessful. A system reset is only carried out on this interface when the channel for which the interface is suspended has carried out the system reset.

2.3.4. Unassembled condition

An interface from which no node is exclusive, shared or suspended is located like all of their nodes when they are not set up. The units are on this interface not available for a channel. A constant general default displayed.

2.4. Basic commands

Since the body control unit is a normal control unit in that it is its I / O interface connector is concerned, it can execute the basic instructions with the aid of instruction decoder 74 (FIG. 3). The commands are: control command for non-operation, command for I / O check and command for basic sensing.

2.4.1. Command for non-operation

This command is issued by the body control unit regardless of the state of the addressed interface or the node or the authorization status of the channel. It's a direct one Command given with "end of channel" and "end of unit" in the first selection sequence.

2.4.2. I / O check command

This command has the dual function of removing a suspended state and the state of a Check the node. If the status for the addressed unit (node) is held, will this state is presented to the I / O check. When the basic state for a different than that addressed Unit is held, the bodywork control unit responds with the short sequence "control unit occupied". If no state is exposed or for a unit other than the addressed unit, the secondary state is present, the construction status of the addressed node is checked by the I / O test command. If the node is set up either exclusively or divided or exposed, the construction control unit speaks with the O-state. If the node has not been established, the body control unit also speaks the unit check state.

2.4.3. Basic feeling command

This bump causes data to be transmitted. The body control unit enforces the impulse operation during this data transfer and finds itself at the end a status byte of the transmission, whereby the end of the channel and the end of the unit are set.

The sensing data provide information about the state of the addressed node and give the reasons for the previously carried out unit test in detail. The bits are defined as follows:

ByteO

Bit definition

0 = Konimando rejection

1 = intervention required

2 = line OFF test

3 = device test

Bytel bit definition O = Exclusive state I. = Shared state 2 = Suspended condition 3 = Mightily assembled state 4th = ** 5 = ** 6th = ** 7th = ** ** For future Reserved for purposes.

4 = ** The status byte, which ends the command, in

5 = ** which the error was detected only contains

6 = Set-up violation at end of channel, end of unit and unit check.

7 = Authorization violation

* Let unit check set. ^{5 construction} violation

** Reserved for future use.

This bit is set if the command »exclusively Setup «is sent to an interface that is already connected to another channel ίο is or if the command set up and share is issued to an interface that is exclusively for another channel is established or suspended. If this bit is set, a unit check is carried out given.

¹⁵ Authorization violation

This bit is set when a setup or authorization command is given via a channel whose authorization bit is switched on when this Be command _{rejection 20} f _eh i _{es mcnt} or its signal setup

This sense bit is set when a command on ^{OFF n} ' ^cnt is up. In the presence of this bit, the construction control unit is given that is not given for a unit test, it is intended or requires a facility which has exclusive status

currently not installed in the bodywork control unit

is. The status byte only contains a unit check * 5 This bit is set if the with the address and will during de! Given the first election sequence, the intersection-connected interface was carried out which the command was rejected. Which is ultimately set up for one of the channels. States of all nodes and all authorization Shared state

states remain unchanged.

30 This bit is set when the addressed node

Action required ten point is in the divided construction state.

This bit is set when the position of a _{Δ 7 t} .

Construction hand control the successful execution of exposed Austana

a setup or authorization command is prevented. This bit is set when the addressed

35 Node in suspended construction state befin line OFF test det.

This bit is set if the status was not established during transmission

an instruction to the body control unit an invalid parity is detected on the output line This bit is set if the interface connected to the address or an invalid interface sequence through the 4th node is not detected. The status for a certain channel including the out byte contains a unit check only if it is set up in the set construction status. rend the first selection order in which the fixed error ^ 5 configuration commands was placed, was added, and it contains the

Unit check, the end of the channel and the 45 To change the state of a node or intersection end if an invalid sequence occurs after the point has occurred, various commands are defider first election sequence is determined. ned. The commands can be divided into three groups

will. The first group includes the commands that do the

Device test require setting of an installation status. This loading

This bit is set if the execution 50 errors are successful, as soon as the requested response to a command by the construction control unit does not match the construction states of other node council errors Kondaher question lent, ^{conflict of} him one of the following conditions ^{et up instrument} g · ^{the second} group includes the commands, the Geräteprüfbit can be set: the notwithstanding setting a Aufbäuzustandes

55 of the states of the other crossing points on the

When a setup command is executed, the interface is forced. The third group includes the _{setup control unit} that a node emf; n command which, by mistake, does not have the status one of the interface to the other node points. takes on which it was placed. _A j _{le set-up} commands are direct and follow-up

When executing a setup command, the 60 execution for setting the end of the channel and one Forcing a new structure, the end of the structure can be completed during the first selection successc. if Control unit does not force the interface to execute unsuccessfully or with questionable success gen, which was set up by another interface, the unit check can also be found in the status byte to solve. hold, with the corresponding sensing pointers

When executing the authorization command 65 is set.

If the setup control unit determines that a setup command can only be executed

Authorization indicator incorrectly does not indicate if the body control unit is authorized to do so Assumes the state on which it was set. To change the construction status (see authorization command

15 16

and structure OFF, Chapter 6.1.4.). If the build-up is more likely to be used, this operation is required

Control unit is not authorized to delete any of these sub-channels if units become too

Setup command rejected by resetting while,

of the first selection sequence the unit test alone -ι * ·. · τ- ja ^ li.

given and the display bit for authorization violation 5 ² ^ ⁴ ' ^{Losen md cancel}

is set. The one belonging to the addressed intersection point

"_. _Λ . , .. ",., .- Interface is in the suspended construction state

2.5.1. Excessive build-up brought when a pulse operation is currently running

The addressed intersection point is triggered, an interface release sequence is attempted

eventual set-up when all other io The interface solution is through the to the

Crossing points on the interface are in the channel that is not connected to the interface

assembled state. Bodywork control unit upon request by the

If the interface is already trying for another body control unit, bypass the command channel was built (another crossing point leads on.

the interface was in the exclusive or 15 With the exception of the addressed intersection point

exposed construction state, or one or more are all intersection points on the cut surface in

the other points of intersection were set in the divided state but not set up. If just

construction state), the initial state comprises the unit - an operation with a unit on the cutting surface

ten test and the display bit for the construction failure expires at the time of the execution of the command

language is also set. 20 the associated channel or sub-channel has an error

condition or encounter the condition "hang".

2.5.2. Build up and share _Da ^ _{6 states of the at} their crossing points of the

The addressed intersection point is not executed in the divided separation point.

set construction status, if no other crosses close, its execution can only be unsuccessful,

Points on the interface are exclusive- 25 if a device error occurs. That will make it

borrowed or exposed state of construction. indicates that in the initial state a unit test

If there is another crossing point on the fungus and the display bit for device test

Interface is already set exclusively or suspended.

th construction stage, the initial 2 5.5. Dismantle

was the unit check, and the display bit for 3 °

Construction violation is also set. If the addressed crossing point is not

is in the assigned state, it will be in the

2.5.3. Jerk points and establishing _{not au} f _ge built (degraded) state is set. the

The states of the other nodes on the intersection interface belonging to the addressed intersection point is necessarily put back and the 35 place and also one on another channel with the addressed crossing point in the exclusive unit on the interface running operation Construction status set. is not influenced by this.

If the interface is not set up, the states of the other crossing points are on stood, the execution of the command of the cut surface does not result in the execution of this command no other canal or crossing point affected, 4 ° to exclude, it can only be unsuccessful if a and the same result can be achieved by the exclusive device fails. This condition is indicated by Achieve borrowed construction. If the interface is in including a unit check in the initial exclusive, divided or suspended construction state and by setting the Gv. all built intersection points will show bits.

(including the addressed intersection point, 45 26 sensing commands if this is set up) in the not set up

The state is switched (which causes the interface to- The sensing commands give information that is

is reset) before the addressed intersection relates to the intersection points to be switched through.

point in the exclusive construction state, on the canal.

will. If a 50 _,, _,,. ... ,,, .. ,,

Operation with a unit of the interface is ^{running , 2} · 6Λ · Sensing authorization states

The associated channel or sub-channel can be a This command supplies information that relates to

Error condition or the condition »hang on« - refer to the channel authorization register. Bit 0 of the

meet. When switched on, data bytes 0 indicates

Since the states of other crossing points on the 55 that the channel 0 the structure of the circuit and loading

Interface may not execute this command with authorization, bit 1 of byte 0

exclude, its execution can only be unsuccessful shows in the switched-on state that the channel 1

be when a device troublemaker occurs. That will be allowed to carry out the construction, etc.

shows by adding a unit check to the initial status. .,, ...

included and the display bit for device 60 ^{2 /} '· ² · total structure sensing

exam is set. This command provides information about the

When a program sends a command to reset the entire structure of the interface switch. Bit 0

and structure on an interface switching unit, if data bytes 0 indicate when switched on,

there and thus all units on one interface that interface 0 is connected to channel 0

it is also responsible for who is to-65. Bit 1 of byte 1 indicates that the

corresponding unit code words with a command interface 1 is connected to channel 0, etc.

»DELETE SUB CHANNEL«. If and bit 7 of byte 1 finally shows switched on

■ Canälc a common unit code word that the interface 15 is related to the channel 0

Π ^ήή 18

that is. Bit 0 of interface 15 belongs to channel 0. 2 91 Warning
Bit 0 of data sensing byte 2 indicates switched on,

that interface 0 is connected to channel 1. The status bit »Attention« is only used together]

Bit 0 of data sensing byte 2 indicates switched on, used with the status bit for unit test

that the interface 1 is connected to the channel 1 5 to an asynchronously occurring abnormal condition

etc. to display. The two bits can either be in asyn

A command to sense the overall structure of a chronic sequence of states or based on an I / O

is z. B. given on the basis of an advertisement that a test will be given. The bits watch out, unit

unconditional set-up order through another set-up test and evidence will be given if urgent

Control unit on the interface switching unit off- i <? Command no I / O check for a unit pmpfan

was conducted. gen is turned on after the bits have been generated

1 1. r> ü- ι n_ λ ...... unit check, but before accepting the Zu

2.6.3. Channel _structure sensing §tandes ^ _d * _{Q Kam} 1 The attention} bit ^ _m

The command to sense the channel structure together with the bit one-time check pder mi

provides information about which interface path is given to the bits unit check and occupied,

ne .: with the. the channel issuing the command connected.

who are. "2.9.2. Status modifiers

The returned data byte shows the structure. The bit is now together with the receipt bit

status of each interface. Im switched on and shows the occupancy of the control unit

th state shows z. B. Bit 0 byte 0 indicates that the 20 The condition is only displayed if the structure

Interface 0 is connected to the channel that gives the controller a primary state (i.e., channel

Issue command. Bit 1 byte 0 indicates that the cut end, units; nde) for something other than the adres

place 1 with the channel issuing the command holds the versed unit and is always with the help of the kur

is bound, etc. zen assignment sequence given for the control unit. There:

2.7. Authorization status *

Each assembly control unit has an authorization- *> _a τ c ■ u ■

The supply state Ber ^ chtigL.igszustand by control unit 233. End

a register or by authorization manual control The status bit for control unit end is fü

switch displayed. The authorization register is used to indicate that a previously indicated operation

by authorization commands or during the system condition of the control unit no longer start

star or system main reset according to the. The bit can be used alone in an asynchronous to

set to the manually predetermined state. -.conditional sequence on the basis of an I / O check or to

The authorization status allows execution with an occupancy bit on the basis of a command

tion of authorization and setup commands. Except for 35 there is no I / O check. The bit control

that can end with a low signal on the construction-OFF unit together with the busy bit

Prevent the execution of these commands. step.

2.8. Set authorization register 2S) A. Proven

Set channel authorization register: The channel 40 The busy bit indicates either that the adres

Authorization register is selected and the corresponding unit is in a running state, or

the bits in the control command code are set. The bits 0, together with the bit status modifier, that the on

1, 2 etc. indicate channels 0, 1, 2 etc. construction control unit is occupied. The busy bit is mi

If a specific channel is identified - other status bits are given which are addressed for a «

of the B.i is switched on, the authorization unit cannot stand an I / O check when a command is issued

and setup commands through the associated channel setup. The busy bit can either be used for control unit receipt

construction control unit to be run. If the bit is not used or only because of a first one for the unit

is set, the attempt to execute the command is given and shows in all cases

ren, unsuccessful, which is indicated by the fact that the len indicates that the command has not been executed or nui

To ^f an examination unit included angszustand tested was 50,

and the authorization violation 295 end of channel sense bit
is set.

2 9 State ^^ ^ ' ^{l The} end of the channel is always given with the end of units bit and indicates the end of the channel

The following commands are executed by the bodywork control unit. The bits end of channel and input

uses the status bits: hot ends never appear separately from each other

If the command is performed in an abnormal manner

Bit position description, the unit bit is added to these bits.

0 = attention check. The busy bit can also occur

1 = Status Modifier 60 if the unit does not receive any I / O

2 = control unit end of test was addressed before end of channel and input

3 = occupied end (as well as unit check, if created)

4 = end of channel have been accepted by the channel.

6 = unit check 6 ₅ ² · ⁹ · ⁶ · units end see channel end

7 = unit exception 2.9.7. Unit check

Note: The status can also be set by the switch position ^The unit check bit is set to ensure that the

be generated. are to be reported to an exceptional condition

gen. The unit check bit is only on the OFF line via the AND circuit 40 from the channel Reason given a first selection sequence and shows headed address is examined. Part of all adresan, that the received command has not been carried out is necessary for the identification of the interfaces could. The bits in the sensing byte describe which is correct. This part can be the significant bit or c * ie exceptional condition. If the bit unit is 5 bits of the unit address bytes. It can do that tenprüfimg together with the end of channel and second address byte bits if there is a two-byte I / O unit end is given, it indicates that addressing is available on a channel exceptional condition when running but not connected to a control unit Command was established. The unit test is It can be the most significant bit or the bits of the second given together with the attention bit and shows io address byte where both the channel and the the asynchronous occurrence of an abnormal condition control units with two-byte addressing aran. The busy bit can work with any of the above.

Combinations of states occur. The bit combination actually to be used is ο η ο τ- τ. · U ^to ^ set ^a point in time when the interfaces-2.9.8. Unit exception _1? Switching unit is installed or as soon as the component is available for definition. arrangement of the installation is changed (e.g. by

Hand switch. Bridging: cards or cards 2.10. Interface sequence _etc \

2.10.1. System reset With a 2 · I interface switching unit (ie a ^2O two channels and four I / O interfaces received from the bodywork control unit), in which all system reset leads to the reset of all lau- crossing points are built up or divided and the ends States, state conditions or just working with one-byte addressing, it would be appropriate to use the two high-value bits in ongoing operations in the structure control unit. This resetting does not in any way affect the eight-unit address bits for the setup status or authorization status of a node to be assigned * 5 interface selection. The six remaining ten point or this with a different set-up bits allow 64 unit addresses per interface control units. (It should be noted that when assigning

the same group of four addresses to each of the two

2.10.2. Optionally, the Construction Control Units default one interface only

The body controller responds to command 30 for 60 addresses for units on this interface

an optional or error resetting has just as postponement.)

on as with a general reset. _{3 2} operating states

2.10.3. Interface separation The monitoring of the operations on the cross-through an interface separation sequence leaves the opening points of the interface switching unit construction control unit directly the Qpcraiions input lines the control part of the switching matrix 10 in F i g. 2 brings tion and thus all other interface lines the establishment of certain operating states of the button trap. If the interface separation after a ten point and thus the interface with itself. These Zero initial state for a command no I / O states indicate the state of the connection and Examination but before a final state is received, 4 ° will be for the correct guidance of the control system In addition, the data transmission is ended, the channel unit initiated sequences and the determination The end and the end of the unit are generated and the request to connect other channels to the section change EIN raised to reproduce the end position used.

condition «to request. One to any other 3 ₂ , Affiliated State
Time received? Interface separation sequence has 45

no effects. If a Knnal is in active connection with a

Control unit is standing, d. i.e., the control unit has the

3. Switch control line state ON or operation ON above. By monitoring the I / O interface, the caoer when the line selects OFF from the channel above channels 30 and the construction states can be as shown in FIG. 2 50 a if the interface is or during the time of Switching control shown via the control of the delivery from the end of the unit to the renewed switch-on matrix 10 on the intersection points in the selection of the chain command, becomes the intersection point control part of the switching matrix 10 and all necessary as in the connected state designate interface response signals deliver. The switching network. During the crossing point and with it the control, the states of the crossing interface are set temporarily in the connected state as a result of the monitored activity, no other channel can interface with the other Interface lines and provides this information.

mation via the body control unit 14 to the loading. A channel can therefore only be used at a time

drive system available. Control through one interface and one interface to only one

Switching control takes place in such a way that neither channel 30 60 channel are connected,

nor the control units 20 the intervention of these """", ^ _1. ,

Need to perceive switch control. ³ ' ² · ² · Z ^u S ^eor dne state

If the interface switching unit is so used

3.1. Schniltstellenadressierung ^we d in that a chain of operations, including

65 operations with the channel must be ended,

The one who initiated the operation in a first selection sequence by a cadre is the assigned

The nal addressed specific I / O interface is in the assigned state through the associated crossing point. In

the switching control is determined by the on the this state are all from the control unit

initiated sequences are given on the channel to which the control unit ends together with the status

Interface is assigned. Modifier and the Belcgtbit back (short sequence for

An interface can be assigned to a specific time control unit),
point can only be assigned to one channel, one

However, channel, multiple interfaces züge- 5 ³ x ⁵ x Schmttstellcn selection result

be arranged. The channels used to treat the data

If the interface switching unit with selection and operating requirements is used I / O interface channels a single system is used, the brewing sequence is referred to as a dialing sequence. These The crossing points for this channel do not result from some channels responding to Anin the assigned state to be transferred, io promotion ON while other channels are used because the connected state select the same function as soon as no other activity is taking over in the channel. In a similar way, the connected one is sufficient.

This state is off when the interface switching unit A selection sequence determined by the selection logic 34

Used in a system that controls the channels which causes the lines to request ON

Division of unit control words permitted. In all 15 of the crossing points that belong to the channel

other cases, the assignment state is required and via the AND circuit 38 and the OR

lich. Circuit 42 led to logic 44 is examined

The duration of the assigned state can be changed. The election sequence runs to the interface with the change depending on the system to which the interface has the highest priority, whose line request ON switch unit is connected. When two is 20 above and either exclusively for that one Systems are connected (assuming channel built or built and shared and not that control blocks are not divided), which is occupied by another channel. Each section assigned State not only the chain of Op- stelle is considered to be occupied in the election (if rations, but also any necessary error - they are not already), and the state of the recovery include. If the interface 25 speaking intersection point in the control part of the Switching unit with several central units used Switching matrix 10 is set (if not already the corresponding control blocks have happened to each other). If no line request ON share, the assigned state only needs to be upright on one of the channels angusdilobstneii SdiiiiüMclic to be obtained until the final state of the operation or on a built and shared and not or the chain of operations is accepted by the channel. 30 is the interface occupied by the channel above, will

Selection ON returned by selection logic 34

3.3. First selection _{sequence (and thereby} indicated that no requirement

If address OFF through channel 30 and then currently requires an operation).
Selection OFF are raised, the selection - _ -.,, _E. ,. . , ...—,
Logic 34 enters a selection sequence that sets the address to 35 ³ * ⁶ " ^V °" initiated by ^{the control unit}
the OFF line via the AND circuit 40 and when a control unit 20 routes data or an OR circuit 42 to the logic 44. The operator needs to cause the lift logic 44 to examine the address on the OFF line of the ON request on the interface. The and selects the appropriate crosspoint driver switch control logic 36 monitors line 46. If the crosspoint is not finally set up or set up and shared with the channel 40 request ON for all interfaces to which it is disconnected or in the "suspended state", the selection logic causes the selection logic 34 that selection OFF (and not occupied by another channel). If the channel is returned as selection ON, such a signal is detected and the channel and there is no separation point selection sequence is not occupied, request ON is on the channel If the node is sent exclusively to the channel 45. If Wrhl AUS is set up or is set up and divisible and the interface is not assigned to an interface is not assigned to another channel, if another channel is assigned to it the crossing point becomes the crossing point in the connected in the occupied state sets, and the dialing sequence is set running state, and the selection sequence can depend on the normal. If the interface with another addressed interface will run normally. 50 channel has been occupied, the request signal If the crossing point is set up and divisible, ON is removed, and the dialing sequence cannot influence the interface with another channel, however,
is occupied, the switch position signals a result

Control unit Allocated to the channel and the 4. switching matrix

job selection sequence does not take place. 55

. . The switching matrix 10 in Fig. 1 consists of Tran

3.4. Control unit end sostor intersection points (Fig. 4), which with eini If a sequence control unit occupied by the standard E'A break point are to be used. Tue «

Switch control unit based on a first sequence of switching matrix takes the I / O interface line

was returned, the following state 60 and other lines (control OFF, direct AUi

Control unit end normally given when the and directly ON) that are used together for this purpose

Interface is occupied longer. That will be the control, the dynamic electronic rebuild

unit end accompanying E Α address is the address of the system to be coordinated,

the F. A interface railway. Since the crossing point switch has a central position

If by the time channel 65 takes up in the system, reliability is down

a unit tries to make the main considerations based on the associated cut availability. To this

try to address a control unit end at the end of the purpose, avoiding the use of the crossing point

When the control unit is set up, it sends the status bit to a local power source. Electricity becomes indirect

23 24

each crossing point through which these cross-emitter series resistors (e.g. 200 ohms) are used

point controlling channel and through the natural limitation of power consumption at the collector

Current level of the signals on the I / O separation point of the driving NPN transistor. The driver has one

guided that goes through the crossing point. Output impedance of approximately 11 ohms and an

The crossing point is shown in FIG. A 5 rise and fall times of less than 100 nanometers

Crossing point is turned on or in the lei- seconds.

Tending state brought about by saturation of the transit egg, -, <■ u · .. n ■. ι. · ■ ·

stors about its base resistance. This is done by ⁵ · Vers.onen the interface circuit

Raising the signal line »Direct OFF«, which was a completely

the switching control is applied to the switching matrix. IO-end interface switching unit definition is described

Data signalc, which was sent on the I / O's »transmission line«, which addresses most cases of need,

Most applications do not require the full interface at the collector of a chosen intersection

arriving at the point are weakened by the potential capacity. For this situation you can

Saturation drop of the transistor at the emitter subsets are called the full definition,

forwarded. ij the upwardly adaptable and modular switching

Deliver the transit time through a single intersection applications. In the following, various

point is determined by the dene of these subsets shown in Fig. 5 described. For every version

Relaxation time for the majority bearers. The basics are first of all the goals and certain requirements

The charge distribution of a saturated cross-point range of the application is recorded, and then

Transistor. who does not conduct a signal, takes at the beginning ao ßend the operation is described,

profile A. When a signal arrives at - - ...,. , _c . . .. ".

Collector recovers the base charge or relaxes ^5Λ ■ multiple interfaces per channel

switch to profile B. During the transition period, the electrical values of the I / O interfaces

the basic area, analogous to a three-dimensional area, can be used for control units and lines

Resistor-capacitor network built, restricting 45 addable total resistance values,

sen time constant is measured in picoseconds. This means that long cable lengths are only possible

The signal delay through the crossover point is Hch when few control units are connected

Switch is therefore mainly in the wiring sindi and many control units can only nngp-

and can be about 9 nanoseconds. closed if short cables are used

For the inclusion of a crossing point in 30 den. Very often, however, both long cables and

the conductive state or for the separation of a cross also numerous control units desired. Consequently

point from the conductive state is required, a sound unit is required that has the following

borrowed time is met primarily through the life of the La requirements.

fertilizer determined in the base area. This switching unit must have several interfaces in

Delay can be on the order of less than 35 one for the channel, the control unit and the pro-

35 nanoseconds. Connect a gram transparent type to a duct

The smallest voltage amplitude of the signal can. You must either with selector or multi-direct OFF to the cross-point base is the plex channels and with pulse (one-point) or multi-largest current that is required to enable the cross-plex control units to work,
to keep point transistor in saturation while 40 The interface switching unit consists of a line of a smallest I / O interface signal control switch and a switching matrix. A build-up level on the transmission line. The highest level of the control unit is not required, since the structure of the direct OFF driver is the amount of permissible stands. The complexity of the switching control is further reduced in level shifting on the interface lines for this version, since only with the base current. Typical values are 45 a channel is worked and the build-up states are 150 millivolts or approximately 3 milliamperes of the base constant. The switching matrix is based on a tri- current. ^^ ^η F ^al1 reduced.

A suitable direct OFF driver (Fig. 6) ar- A first choice through the channel results in working with a 12-VoIt power source. It is reasonable that the interfaces of the series advertising taken by selected such that a 3.6 kilohm resistor, the base 50 g to as address and line isolation from par des crosspoint switch of F i. λ allele or sequentially delivered to all interfaces. This resistance value leads in connection; will give. If the selection ON is returned by an intersection with the above criteria to amplitudes between, indicating that 9.97 and 12.08 volts are seen on the direct OFF, the addressed unit does not interface with the driver line at the crossover point. The circuit 55 is closed , selection OFF is passed to the next works with PNP transistors 7 * 3 and T4 in the stepping point until a unit or control output stage responds to the driver tolerance range fully unit or until all interfaces are selected and used short-circuit protection for those who have become.

To be able to form driver circuit. If a direct unit is switched on, Γ3 and Γ 4 60 the channel initiates a dialing sequence. The scarf saturated. In the event of an overload, the transistor control selects the interface that is unsaturated and the current through the emitter series calls for operation. If no operating resistances are limited. The NFN transistor TS is present in the request, selection ON is made directly to the output circuit provides a slightly negative level, channel returned.

if the direct OFF driver is switched off, where- 65 All resets of a general nature and error-

due to crosstalk from a data line to defaults are parallel on all interfaces

others gave up on an unselected intersection. The provisions take over the same

is kept as low as possible. The function as it is continuously defined and influences

25 26

sen the states of the interface switching unit operated manually, but Ut only effective if one of the

not. Activity of the interface monitoring circuit

5 2 Extended Finheitadrcssierunc determines that the switchover without interface

lehlcr can be done. The switch is connected

Through the introduction used on the interface with the programming and the activities of the Byte address is the number of units per channel used by the operator so that the activity is on currently limited to 256. The possibility of one of the interface has stopped before the handover Byte was used for the channel switchover. The hand-operated logical one but is currently defined by a control switch must meet the following requirements: unit not used. This need can be met by an io The switchover must be a device for the switching unit cover the following connection of each connected interface with a gen met: connected channel according to the hand-The switching unit must be able to allow several switches. The switching unit must have the f.t interfaces with one channel in one for the material separation and connection of the interface Control unit, the channel and the program are transparent and delay channels until in the activity annuity type to connect. You must either reach a point with Se- the interface, which is a deflector- or multiplexor channels and with individual switching permitted without errors on the interface, or multiplex control units can work. The switching unit. must be either selector or Switching unit must pass through the individual control units with multiplexor channels or either with individual ones Additional address byte 20 supplied by the channel or multiplex control units are working. If the can choose. In addition, the switching unit must be switched over once, tuss the existence of the Address with the corresponding additional address switching unit for the channel and the control units byte can expand if a unit is transparent to its.

Address to the channel there. The interface that fulfills these requirements - as can be seen from the requirements, is the switching unit consists of a switching matrix and the switching unit that covers this requirement is an extension - a simplified switch control. There is no evaluation of the first version described above. In addition to programmed control of the switchover required dsr. The possibilities described there is possible. no body control unit is required. It is necessary to have an additional address byte in the structure state of each intersection point in the interface switching unit as well as in 30 indirectly through the position of the manual switch for the channel. sen crossing point given.

A first dialing sequence includes sending an. The setup status differs from the

Address of the channel consisting of two bytes in switch position only during the logically determined

the shift control. The second byte addresses the delay in construction.

Interface to which a unit is connected, 35 When a manual set-up switch is switched

and the first byte denotes the unit. The shift control examines the operational

Switching control selects the addressed interface status of the cross belonging to the interface.

and the first selection continues. When point of the tongue. If the crossing point is in the

If you select ON from the selected interface back-connected or assigned state, the

is given, no other interface is selected, 4 ° reassignment indicated by the hand switch

and select ON is returned to the channel. exposed. If the crossing point is no longer in

The switching control must ensure that the connected or assigned state is

additional address bytes with the correct marking, the interface is switched and becomes somh

and marking parity at the right time on exclusively with the

LineEIN supplied is connected to 45 given channel. This new connection

When a unit or control unit can interfere with the new channel, normally without return

indication request and the channel with a sees on the activity in the new channel must be done

Wafi sequence responds, the switching control ensures that it is nevertheless carried out in such a way that on

that only the requesting interfaces are selected the new channel no interface errors occur,

the. If an address information is returned by the 5 ° _c . _TJ .

Control unit is given to the channel, expanded ⁵ · ⁵ · Manually controlled division

the switch control sets the address to the most of the situations that require a division of

Additional address byte belonging to the interface. Require control units between channels, loading

_, _x , "t \ .j require a minimum of new construction that goes through

5.3. Manual permanent state _{55 manually operated} devices can be carried out. In numerous switching situations it is sufficient to designate an interface switching unit.

Means for the manual construction of a system to be net, which a construction by hand switch 50

have when the system is down. The same effect can be set (Fig.2) and all the necessary circuits

can be achieved by supplying the interfaces to the division of units, control units changes the wiring in such a way that the desired combination <x> and to allow interfaces among the channels,

nation of components. The requirements therefore include the following: Dk

_. _TT . . _ Switching unit must be able to set up several interface

5.4. _{Hand-controlled} construction _{len m each channel} ^ _{several channels m each (}

If a circuit does not allow a programmed Um interface. You have to do a manual shift circuit requires and the stopping of the system 65 device for producing the overall structure de

to switch is unacceptable, a hand-cut surfaces and channels will be darsHlen. It has to be

controlled switching unit can be provided with a logically determined logic device, which the on

Switching time used Such a switch is used by the division and the connection between the channels for

27 " ^% 28

makes the cut surface. According to the definition of the connection status, the device must be able to

work so that their intervention does not produce any indications - of course only one node per interface and

calls that a normal operating system cannot easily stand channel in the connected state,

can handle. The switching unit only needs the application of the switching unit to channels

To provide division between Wahlkanälcn, which is limited to 5 for the same central unit, the

only one common central unit work. Delivery from control unit end in connectionx'.u-

Multiplexor channels and channels that stand with multiple are switched off by which signal the

Central processing units are working or under these on-switch control indicates that the control unit is not

are expressly excluded. is occupied longer. This resetting of the connected

This version of the switching unit requires an io sen state is always with the occurrence of a

Schaltma'.rix and a switch control. Since connected with the first state, and the delivery of this

manual build-up is being carried out, there is no build-up - the first state is sufficient to start I / O again

Control unit required. to initiate unsuccessfully.

The set-up states are defined by the manual The asynchronous state (end of unit for a switch. The only possible states for 15 non-ready transition, end of unit to Ancinen crossing point are the divided set-up and would take a non-chained channel end, beware of the non-built-up state. How b »; i der logical etc.) is given to the channel that first responds to the controlled assembly version of the switching unit, line request ON. If more than the manual switch does not respond directly to the status of the cross channel, only one of them has success, the other point of entry, but initiate a switching action 20 received selection ON, and a request ON, which is only completed when the Cut falls for this canal.
Conditions of employment permit this. The exclusive built-up state is thus effectively available. Dynamic part addition
It is fortunate that the shared construction state is only possible with one
Intersection point is used on the cut surface. 25 If several multiplex channels join the unit

The switch control sets the connection to share control word memory, this division can be essential for a crossing point, if the choice can be made more dynamic than in Chapter 5.6. OFF directed to the interface is either written to. With this type of division, anyone can choose or choose the first option. The intersection one channel operation from any point remains connected until option 30 edit unit, and the intersection connection OFF is sent from the same channel, but does not have to be maintained only as long as the interface is routed. In the case of a 2 × 4 switch, the interface is in the connected state. This z. B. with channels 1 and 2 and the cutting type of division results in the greatest performance improvement series A, B, C and D , channel 1 leads to the channel and a selection sequence for the cutting can be controlled by hand or by programs of the main back-up ,
set A. When the selection OFF is received and the addressing of interface A is determined, 6. input-output interface options are set
the switch control the crossing point in the

Connection state. In order to meet all requirements of the I / O interface operation, this state is maintained, since according to the 4 ° circuit, certain functions of the definition of the selection channel are only required by one unit from the I / O interface that is currently not receiving START I / O are available until the acceptance. Some of these first state functions were being handled by the central processing unit at different times for different purposes. Repeated first dialing sequences proposed for the same input purposes, and since the formwork or any units are now also available on the interface 45 management requirements, they ^{: -} : do not lead to the resetting of the connected their use justified. Others are for rich junction points. However, if channel 1 requires a term switching operation.
Unit addressed on interface B, C or D,

represents the switch control of the crossing point for 6.1 new disconnection lines the interface 1 from the connection status to- 5 "

back and the crossing point for the addressed For the I / O separation point are three new lines

Interface in the connection state. A ver defined. One line is directed outwards

search through channel 2, one unit on one channel to the switching unit, two others are in!

To address interface whose intersection point directed from the control unit to the switching unit unc

for channel 1 is in the connected state, receive 55 the channel, starts the sequence control unit occupied as the address.

The switch control lifts the ON request to 6.1.1. Reset OFF the channel as soon as one of the interfaces established for the channel has its line request ON. If the system of which the switching unit is one above, or as soon as one of the crossing points for 60 forms part, is divided into subsystems, from denei this channel is in the connected state. (Each one has its own central unit, must return The last-mentioned condition provides the necessary adjustments are generally isolated so that nu interlock for the resetting of the connected the affected components are reset, and < State because a dialing channel on request tsIN must also be reset - only responds with a sequence of elections after the first 65 is the one that is independent of the subsystems. NS State has been deleted. The defined system and subsystems apply to some channels of the subsystems the election sequence occurs automatically and therefore it is optional accruals. In addition, eim Raising the signal requirement FIN redundant.) New total or main provision defined, ie

29 30

the states of the intersection points influence the interface. The cutting edge scarf

how the whole system can reset. The unit reacts by setting the build-up states

Provision takes place similar to the one defined the interface in the built up and exposed

System reset with the additional requirement that state.

the new identification line with the designation 5 priority EIN
Default OFF must rise before operation

OFF drops and stay up for the same period of time A new line called Vorrecnt must as Operation OFF is below. In order to be effective, the channel and the switching unit indicate that there is Reset OFF must rise before any unit or control unit is on the interface Operation OFF drops out, and up to a point in time has a priority on the connected channel. after going up from Operation AOS above- The use of this line allows the Kan ™ stay. Operation OFF must stay down until Ope and the switch unit determine when to peel off EM drops out, division and switching of the interface to

The resets caused by resetting OFF are. .
This line is activated by a control unit and, if necessary, also raised the activation statuses when a command is received for a connected one-by-one setting of each status after a cycle, and remains up until the final defined pattern. The provision can thus be accepted. Furthermore, this state of affairs of a certain node will change up until the sensing data is deleted, if or not, which depends on whether it has been in an error condition since 20,
last main reset to another state \ ufbau AUS
was set or not. By resetting 'tu α ti', the channel authorization bits are switched on. A line called Aufbau AUb

from the channel ? ιτ interface control unit is in

6.1.2. Solution ON ₂₅ Connection with the OFF identification lines there-

The line disconnection ON is used by a control unit to provide the following special function:

Unit delivered and heats the channel and the switching re-assembly is permitted if assembly is OFF above

unit before a condition that is raised on the control unit and command OFF during the first

has been established and requires that the control unit dial sequence. Body OFF must be at the body control

is disconnected from the interface (e.g. failure of the 30 unit for a period of time that is required

Power supply). The channel must then become active immediately so that the individual bit becomes the command byte

Take steps to validate the activity on the AUS line.

For this purpose 2 sheets of drawings

Claims (11)

Patent claims: 1. Data processing system with one or more input-output channels with control units for the transmission of control and request signals and one or more Input-output control units, characterized by one of several levels existing matrix switching unit (10) with a first sub-unit (line part, top level in Fig. 1) for connecting the channels (16) to the control unit or units (20) and a second, functionally with the first connected sub-unit (control section, lowest four levels in F i g. 1 for storing the occupancy status of the matrix connection points in the first Uitereinhsr. and assigned by the channels Switching control units (Fig. I), with A-load lines (Control OFF), which query the occupancy status in the second sub-unit, Evaluate status signals received via status reception lines (direct ON) and Signals on connecting lines (direct OFF) for connecting or interrupting the connection points generate in the first subunit. 2. Data processing system according to claim 1, wherein in each case a number of control units in summarized in an interface device is, characterized in that one in the first subunit for each interface line Matrixebenc is provided, with one row each for a channel and one column each for an interface device is assigned that in the second subunit a matrix level for each channel is provided, with one line each with an interrogation line (control OFF) and one column each connected to a status receive line (direct ON) of the trunk group of the relevant channel is. the connection lines (direct OFF) at the same time corresponding connection pointc switch through in the first sub-unit as well as in the second sub-unit, in such a way that that an interrogation signal on an interrogation line via the connected connection point is transmitted to the 7 '; status receiving line and indicates which connection points in the first Subunit are switched through. 3. Data processing system according to claim 2, characterized by a transistor (F i g. 4) as a matrix connection point, which is triggered by the switch-through signal (direct OFF) at the base is driven into saturation and held in saturation during the signal passage and which is fed by the signal voltages from the channel and from the input-output control unit (Figs. 7, 8). 4. Data processing system according to claim 3, characterized in that the driver stage (46 in Fig. 2, 6) a non-switched transistor at the base with a signal from one controls polarity opposite to the polarity of the gating signal. 5. Data processing system according to claim 1, characterized by a switching control (12 in Γ i g. 1, 2) in the switching control unit with a priority selection circuit (36) for selecting the requesting control unit (20) a row with the highest priority, the inputs of the Priority selection circuitry are connected to the first lower part of the matrix switching unit. 6. Data processing system according to claim 5, characterized by a priority control and Conflict resolution circuit (52) for selecting one of several, from a control unit (20) Requested switching controls (12) that only respond to the request signals (request ON) an input-output control unit responds. 7. Data processing system according to claim 6, characterized by an interface status device (44) with a flip-flop for each input-output interface, wherein the interface status device with the connection lines (direct OFF), interrogation lines (Control OFF) and status receiving lines (Direct ON) is connected. 8. Data processing device according to claim 7, characterized by a body control unit (14 in Fig. 1, 3) with an instruction register and decoder (74) for receiving Commands from the associated channel, which commands specify the setup options that are provided by the Switching control (12) when switching through the connection points and when sending out Reply signals are taken into account, the body control unit the flip-flops in the Interface status device (44) adjusts. 9. Data processing device according to claim 8, characterized in that the Interface status device (44) can switch on all interrogation lines in order to establish the connection to monitor all channels, and an interface device switches off when this interface device requested *, but is already connected to another channel. 10. Data processing device according to claim 9 for dynamic multiple connection between channels and input-output control units. characterized in that request signals and others via the switch control unit Control signals sent from the channels to and from the input-output control units response signals are supplied to the input-output control units, and that means (44) are provided for monitoring the input-output control units which respond to response request signals address this control unit and these response signals and control signals to the relevant device (44) send the corresponding channel. 11. Data processing device according to claim 10, characterized by a selection logic (34), which on the input side has an interface connection device (32) with a channel is connected and generates a selection sequence and a selection sequence signal, one by a address received by the channel is selected and a Busy signal is sent to the channel when the selected interface device with a other channel is connected, and wherein the unoccupied interface device is connected by the selection signal with the highest priority that sends a request signal (request ON); is selected.