JPH02239739A - Indefinite communication network control system - Google Patents

Abstract

PURPOSE:To attain the remote monitoring and the remote control of a node equipment by connecting a monitoring device to one channel of the node equipment and a connection control means and giving an address defined to specify the node equipment in the communication network to the monitoring device. CONSTITUTION:The monitoring device 13 is connected to other terminal equipment via a node equipment 10, receives a request from the terminal equipment, reads and returns the state of its own node equipment 10, or sends a control signal to initialize the node equipment 10. Each node equipment added with the monitoring device 13 is connected to a terminal equipment 14 through a transmission line 12 or to other node equipment 10 to form a two-dimensional or three-dimensional grid communication network. The monitoring device 13 is connected to the input/output port of the node equipment 10 and an address is given similarly as a general terminal equipment, the communication function is provided and an input signal is received from a work station or the like and when the address is received, a reply signal is replied and the state of the node equipment belonging to itself is outputted depending on the request of the origin of the call and in the case of initializing, BOT signal is outputted to the node equipment 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to local area networks, and more particularly to an irregular communication network control method for monitoring and controlling node devices in an irregular communication network. [Prior Art] The present applicant has filed Japanese Patent Application No. 11-218028, etc. regarding a node device for an amorphous communication network. An amorphous communication network is a communication network in which a large number of node devices are connected to terminals or node devices in an amorphous manner through a plurality of transmission paths. Made devices are connected to other node devices or terminals via channels containing input and output ports to which the receive and transmit lines are connected, respectively, such that the input port of each channel connects to all other node devices or terminals. Connected to the output port. The node device disconnects the input ports other than the channel on which the outgoing signal arrived first, and transfers this outgoing signal to all output ports. When all node devices in the communication network perform such transfer operations, the outgoing signal sent by the originating terminal reaches the terminating terminal. Further, by using the inbound signal sent back from the incoming terminal to the outgoing terminal, that is, the node device detects the channel on which the incoming signal arrived, and connects this channel with the channel in which the outgoing signal arrived first. It also fixes the communication route between terminals. [Problems to be Solved by the Invention] In the above-described amorphous communication network, since the node devices only perform signal transfer operations, there is no concept of an address, and since they cannot be accessed directly from terminals within the communication network, remote control is not possible. Due to this, it was not possible to know the status of the maid device or perform control such as initialization. The present invention aims to eliminate this drawback and provide an amorphous communication network control system that enables remote monitoring and remote control of node devices. [A Thousand Steps to Solve the Problem] The amorphous communication network control method according to the present invention includes an input means to which a receiving line to a terminal or node device of the amorphous communication network is connected, and a transmitting line corresponding to the receiving line. detects a plurality of channels including an output means to which is connected, a connection means for connecting the channels, and a channel of the input means to which the outgoing signal from the originating terminal arrives first, ,
a node device having a connection control means for transferring the outgoing signal to all other channels; and a node device connected to one channel of the node device and the connection control means, and defined in order to identify the node device in the communication network. The monitoring device includes a transmitting/receiving unit that transmits and receives signals to and from the channel and connection control means, and a transmitting/receiving unit that determines whether the signal received by the transmitting/receiving unit matches the own address. control means for reading and transmitting the state of the connection control means, or for transmitting a control signal for controlling the state of the node device to the connection control means, in response to a request included in the signal; , thereby remotely controlling the monitoring device and the node device from the terminal through the monitoring device. [Operation] One monitoring device monitors one node device. That is, a monitoring device is connected to one channel and connection control means of a node device, and an address defined for identifying the node device in the communication network is given to this monitoring device. As a result, communication between the terminal and the monitoring device can be performed using the same procedure as communication between terminals. From a terminal within the communication network,
When an outbound signal destined for a monitoring device that is compatible with a maid device is sent, it is broadcast throughout the network like a normal signal and reaches the monitoring device. The monitoring device identifies the address of this outgoing signal, and if it matches, analyzes the subsequent request content, and if the request content is to confirm the connection status of the node device, the connection control means of the node device checks the connection status. Read it and send it back to the requesting terminal as a return signal. If the requested content is control of a node device, a control signal corresponding to the requested content is sent to the connection control means. [Examples] The present invention will be specifically described below based on Examples. In an embodiment implementing the communication control method according to the present invention, as shown in FIG. 1, a monitoring device 13 is added to each node device 10 of an amorphous communication network. The monitoring device 13 is connected to a pair of input/output ports 20 and 30 of the node device 10 and connection control means. The monitoring device 13 is connected to other terminals via the node device 10, receives a request from the terminal, reads the status of its own node device 10 and returns it, or sends a control signal to the node device lO. Initialize. The embodiment will be described below in the order of the maid device 10, its connection control means, and the monitoring device 13. In an amorphous communication network, each node device 10 to which a monitoring device 13 is attached is connected to a terminal 14 or another node device 10 via a transmission path 12 to form a two-dimensional or three-dimensional grid. It forms a communication network, but the network structure is essentially amorphous.

The node device 10 is provided with a plurality of input/output ports, eight in this example. One set of these input/output ports is assigned to the monitoring device 13, and the other ports are provided for connection to other node devices IO and/or terminals 14. Generally, the number of boats for a made device IO is not limited. In this embodiment, the terminal 14 is a terminal device capable of asynchronously transmitting and receiving data, and includes a processing system such as a personal computer, a service station such as a file station and a print station, and the like. Advantageously, the data is transferred in the form of message packets. As will be described later, if the terminal 14 is a full-duplex terminal, a system that immediately sends out a response signal upon receiving a packet addressed to itself is advantageously applied. The transmission path 12 is, for example, an optical transmission path using an optical fiber, or an electrical transmission path such as a twisted wire or coaxial cable, and in this embodiment, data is transmitted in analog or digital format. Transmission uses full-duplex or half-duplex format. Referring to FIG. 1, the node device IO configures a channel with an input port 20 to which a transmission line 12 and a reception line from a monitoring device 13 are connected, and an output port 30 to which a transmission line is connected. The input/output boat is switching gate section 4
They are interconnected through 0. In this embodiment, the node device 10 has eight receiving or input channels 10 to 1.
7 and correspondingly eight transmission or output channels 00-07. Channel x (ix, o
x) is connected to monitoring device l3. The switching gate section 40 has input channels io to i7.
This is a gate circuit that selectively interconnects any one of the output channels oO to o7. The input port 20 is also connected to the switching gate section 40, the start control section 80, and the end control section 70 via the control gate section 50. The start control unit 60 is a functional unit that identifies the input channel to which the input signal arrived first, and also detects whether or not there is an input signal in each input channel. The termination control unit 70 is a circuit that detects that there is no longer an input signal in the input channel of the communication path that has already been set, and performs termination processing of the communication. Switching gate section 40, start control section 60, and end control section 7
0 are interconnected by a gate set bus 80. Also connected to the switching gate section 40 is an active signal output section 200 for sending out an active signal, which is also connected to the start control section 60. Also connected to the start control section 60 and the termination control section 70 is a failure storage section 210 that stores channels in which failures have occurred. The fault storage section 210 is also connected to the gate set bus 80. Switching gate section 40, control gate section 5
0, start control section 60, end control section? 0, the active signal sending unit 200 and the fault storage unit 210 are controlled by a sequence control unit 90 that controls the entire device including them. The termination control section 70 is composed of a communication termination detection section 70a and a connection storage section 70b, as shown in FIG. 5 for the case of four channels. The communication end detection unit 70a has four N
OR gate 72, shift register 74, AND gate 7
6, and one four-man OR gate 7 are connected as shown in the figure. When a signal is input to either the input port 20 or the output port 3o, the NOR gate 72 loads the shift register. Outputs a level (“L”), and when there is no signal on the input/output board, it remains high level.
”).The shift register 74 is a circuit for detecting the end of communication based on a time determined by a communication end detection time constant of a predetermined length.The AND gate 78 outputs the output of the shift register 74 and the control gate. This is a circuit that performs a logical product with the output of the section 50 and notifies the connection storage section 70b of the end of communication. This circuit notifies the sequence control unit 80 that the first outgoing signal from the channel has been interrupted.The selection of which information to report is made by the control gate unit 50.The shift register ?4 is It is provided corresponding to channels IIQ to Cloud 4, and detects the start and end of channel communication.A signal is input to the channel, and the output of NOR gate 76 becomes "L".
”, the output QH is inverted to “L”. This state continues until there is no signal in the channel. The input from NOR gate 7B becomes “H” and there is no signal on both input and output ports of the channel. When detected, time-limited monitoring using the end detection time constant is started, and when it times out, the output QH is inverted to "H" and it is determined that the communication has ended.This output is sent to the connection storage section 70 via the AND gate 76.
Connection information C that is input to b and indicates the presence or absence of communication of channel clouds 0 to I3 from connection monitor leads 0, 1, 2, and 3.
It is sent to the monitoring device l3 as I.

The connection storage section 70b stores the channel for which the communication path is set in the flip-flop 71 based on the input from the AND gate 73, outputs signals 0, 1, 2.3 to the control gate section 50 and the fault storage section 210, It is also output to the bus 80 via the path buffer 75.

When the communication ends, the flip-flop 7l is reset by the output of the AND gate 7B. As shown in FIG. 4, the sequence control unit 90 includes five shift registers 9.
1 to 85, a gate group 96 for appropriately combining their output states to generate necessary control signals, and 7 flip-flops 87 for giving priority to the termination of communication when there is a conflict between the occurrence and termination of communication. and AND gate 220,
An AND gate 100 that inputs a BOT signal ("L") for starting up the node device 10 from the boot switch 88 or the monitoring device 13 and outputs it to each part, and a boot switch θ8 are connected as shown in the figure. ．． A system clock CKI or CKO is connected to the clock input terminals of shift registers 91-85. In this embodiment, the flip-flop 95 is not used, and the mode changeover switch 88 is always open. In initializing the node device 10, the boot switch 88 is operated or the BOT signal from the monitoring device 13 is outputted from the AND gate 100 to all flip-flops of the node device 10 to perform a reset. As shown in FIG. 3, the fault storage section 210 is configured by OR gates 212, 214, a flip-flop 218, a path buffer 211, and a switch 218 connected as shown in the figure. flip flop 212
stores channels that do not return active signals according to inputs from the start control section 60, end control section 70, and sequence control section 90 through the OR gate 214, and uses signals IQ~@3 of the faulty channel as old down information to be sent to the monitoring device. l3
Output to. The OR gate 218 outputs this information to the control gate unit 50. The output of the OR gate 218 is sent to the gate set bus 80 via the buffer 211, and the faulty channel is blocked, as shown in FIG. The monitoring device 13 is connected to the input/output port of the node device filO, and is given an address in the same way as a general terminal.
It has a communication function. When the monitoring device 13 receives an input signal from a workstation or the like and receives an address, it responds and, at the request of the source, sends the node device 10 to which it belongs.
Outputs the status of node device 1, and also outputs the status of node device 1 in the case of initialization.
Output BOT m number to 0. In this embodiment, the box NPU 1 is a microprocessor and performs serial transmission of signal standard RS-2320 through terminals ↑XD, RXD, RTS, and CD. However, since the input/output boards 20 and 30 of the node device 10 handle only serial data, the multiplexer (M
UX) 2, Demultiplexer (IIMUX) 3 is installed to convert serial data and RS-232G interface. MPU t inputs parallel data in 4 bits to terminals DO to D3 and transmits it via RS-2320. For this purpose, a data selector 4 is provided, and each 4-bit information CI from the termination control section 70 and the failure recording section 90
and DI, one of the two types of signals is selected.
[] When the MUX 3 receives serial data from the output port 30, it outputs a data processing request to the terminal CD of the MPU 1, and outputs the received data to the terminal RXD. M.P.
When U1 identifies that the received data is addressed to it, M
Outputs a transmission request from terminal RTS to IX 2, outputs response ACK data from terminal TXD, and outputs a transmission request from terminal RTS to MUX 2.
The data is then sent to the input boat 20. When the MPU 1 next receives a request to read connection information CI or down information Dr from the DMUX 3, it outputs a selection signal to the terminal S1 or S2. Upon receiving this output, MUX 3 transmits the 4-bit connection information 0 indicating the presence or absence of communication between channel IIO and cloud 3, which is input from termination control unit 70.
1 to terminals DO to D3 of MPU 1, and also outputs terminal S
When the output is 2, the channel tO is output from the fault recording unit 210.
~Down information DI indicating the presence or absence of cloud 3 occlusion is similarly MP
Output to υ1. MPU 1 converts the output from terminals DO to Il3 into RS-232111: LMUX 2
Output to. When MPU t receives an initialization request from DMUX 3, it outputs a BOT signal to sequence control unit 80 from terminal S3. The MPU 1 operates according to a program as shown in the flowchart of FIG. 7. Upon start, the MPU 1 resets the terminals S1 to S3 in step 100. Next, in step 101, terminal CD is monitored and C
When D becomes the logical value "1", reception starts at step 102. In step 103, it is checked whether the reception is completed or not.
If yes, proceed to step 104; otherwise, return to step 102. In step 104, it is checked whether the received data is the own address. If it is the own address, the process proceeds to step 105; if not, the process returns to step 100.

In step 105, it is checked whether it is a monitor or not. If yes, proceed to step 10B; if not, step 107
Proceed to. In step 106, the contents of the monitor are checked, and if the connection information is CI, the process proceeds to step 107 and the terminal S1 is connected.
1", and if the down information DI is set, proceed to step 108 and set "l" to the terminal S2. Next, in step 109, monitor information is read into the terminal Do-03. Next, in step 110, the terminal RTS is set to "1". Set "1",
Data is transmitted in step 111. Suup 112
Check whether the transmission has ended or not, and if so, return to the start.

In step 107, it is checked whether or not there is a request for initialization (BOOT), and if so, the process advances to step 113 and the terminal S3 is
is set to "1" and sends a BOO signal to the node device 10.

Although the present embodiment shows the case where the monitoring device 13 is provided for each node device, it may also be provided on the workstation side. In that case, the connection with the input/output boats 20 and 30 becomes a transmission path, and the connection information, down information, and BOOT signal are connected from the node device 13 to the workstation via a dedicated cable. Note that it is of course possible to increase the monitor information and control signals in this embodiment. [Effects of the Invention] According to the present invention, it is possible to remotely monitor and control each node device, and there is no need for maintenance personnel to go to the location of the node device for initialization, which saves labor in network management. ．．

[Brief explanation of drawings]

1 is a connection functional diagram showing a maid device and a monitoring device in an embodiment of the amorphous communication network control system of the present invention; FIG. 2 is a functional block diagram of a monitoring device in the embodiment shown in FIG. 1; 3, 4, and 5 are circuit diagrams showing specific circuit configurations of a failure control section, a sequence control section, and an end storage section, respectively, in the node device of the same embodiment. FIG. 7 is a flowchart showing an example of the operation flow of the monitoring device. 1. Explanation of symbols of parts 1. ．． ．． Microprocessor unit 2. ．． ．． Multiplexer 3. ．． ．． Demultiplexer 4. ．． ．． Data selector 10. ．． ．． 13. ．． ．． 40. ．． ．． 50. ．． ．． S.O. ．． ．． floa. ．． ．． sob. ．． ．． 70. ．． ．． 80. ．． ．． 90. ．． ．． 200. ．． ．． 210. ．． ．． i0Ni7. 00-07. Node device monitoring device Switching gate section Control gate section Start control section First-come-first-served input signal detection section Input signal detection section Termination control section Gate set bus sequence control section Active signal output section Fault storage section Input channel Output channel

Claims (1)

[Scope of Claims] A plurality of channels including input means to which a reception line to a terminal or node device of an amorphous communication network is connected, and output means to which a transmission line corresponding to the reception line is connected; connection means for connecting between the two, and connection control means for detecting the channel of the input means to which the outgoing signal from the originating terminal first arrived, and transferring the outgoing signal to all other channels via the connection means. and a monitoring device connected to one channel of the node device and the connection control means and having an address defined for identifying the node device in the communication network, The device includes a transmitting/receiving unit that transmits and receives signals to and from the channel and connection control means, and a transmitting/receiving unit that determines the address of the signal received by the transmitting/receiving unit, and if the address matches the own address, responds to the request included in the signal. control means for reading and transmitting the state of the connection control means, or for transmitting a control signal for controlling the state of the node device to the connection control means, whereby the terminal can control the monitoring device. An amorphous communication network control system characterized in that remote monitoring and remote control of the node device are performed through the network.