JPH0210934A - Control method for network - Google Patents

Abstract

PURPOSE:To access the network without recognizing the module constitution in the network by generating an address management table at the network side and setting an access route afterward. CONSTITUTION:Communication procedure information is sent from a user application (APL) 1 to a module M1 receiving an open signal to a network 2. The module M1 generates an address management table 21 describing the module sequence. Then a write signal is issued from the APL 1, the module M1 decides an access route in the order of module written in the table 21, makes communication and the result is sent externally from an output circuit 23. When the communication is finished, an end signal close signal is issued from the APL 1 to the network 2, the module M1 receives it to release the access route and the table 21. Thus, the user APL1 accesses the network without recognizing the module constitution in the network or the like entirely.

Description

[Detailed Description of the Invention] [Summary] A network control method that dynamically manages access routes within a network, allowing a user application to access the network without being aware of any module configuration within the network. With the purpose of , the user application then issues an l-include signal, the network determines an access route using the address management table, performs communication, and when the communication is completed, the user application issues a termination signal, and the network determines the access route and address management table. Configure to release.

[Field of Industrial Application] The present invention relates to a network control method for dynamically managing access routes 1- within a network.

[Prior Art] FIG. 5 is a diagram showing an example of the configuration of a conventional network system. When user application (hereinafter abbreviated as user APL) 1 accesses network 2, the access route (consisting of multiple modules) within network 2 is statically determined based on the environment information including the communication procedure. A logical path was provided to the user APL1. In other words, the access route was determined for each communication procedure.

[Problems to be Solved by the Invention] In the conventional system, when the user APL1 tries to access the network 2 using a communication procedure different from the previous one, the environment information corresponding to the logical bus provided by the network 2 is changed. There was a problem in that access to the network 2 was not possible unless steps were taken to reconfigure the environment information, or to accept the provision of a new logical node. The purpose is to provide a network control method that allows user applications to access the network without being aware of the module configuration within the network.

[Means for Solving the Problems] FIG. 1 is a flowchart showing the principle of the method of the present invention. In the present invention, after a user application issues a signal to notify the communication procedure information to the network, the communication procedure information is transmitted (Step 1), and the network creates an address management table in the network based on the communication procedure information. Next, the user application issues a write signal, the network determines the access route using the address management table, and performs communication (step 3). When the communication is completed, the user application issues a termination signal. , the network is characterized in that the access route and address management table are released (step 4).

[Operation] On the network side, an address management table is created based on the communication procedure information given from the user APL. Thereafter, access routes can be set based on this address management table, so it is possible to provide a network control method that allows user APL to access the network without being aware of the module configuration within the network.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a diagram showing an example of a system configuration for implementing the method of the present invention. Components that are the same as those in FIG. 5 are designated by the same reference numerals. In the figure, from user A P L 1 to network 2
A case is shown in which two access routes, the 8-procedure and the 8-procedure, are set for the access route.

The network 2 has four modules M1 to M4, of which M1 is a receiving circuit that receives a notification signal (open) of communication procedure information for the A access route, and M3 is a receiving circuit that receives a notification signal (open) of communication procedure information for the B access route. ) respectively.

21.22 are the respective modules M1. Address management table 23 provided in M3 is an output circuit that outputs information on each route. These address management tables 21 and 22 are created by the module M1 based on the communication order information transmitted from the user APL1 following the ooen signal. M3
Created by The operation of the system configured as described above will be explained as follows.

First, the user APLI issues a signal (open) to notify the network 2 of communication procedure information.

When the module M1 receives this open signal, it prepares to receive the next communication procedure information. Accordingly, communication procedure information is transmitted from user APL1 to module M1. Upon receiving this communication procedure information, the module M1 creates an address management table 21 that describes the order of modules through which the information flows according to the contents.

Next, the user APLI issues a write signal Wr i te to the network 2 .

When the module M1 receives this write signal, it determines an access route in the order of the modules written in the address management table 21, and performs communication. The communication information is sent out from the output circuit 23 to the outside. When the communication ends, the user APL1 issues a communication end signal close to the network 2. Upon receiving this Co5e signal, module M1 releases the access route and address management table 21. As described above, according to the present invention, the user APL1 can access the network without being aware of the module configuration or the like within the network. Although we have explained the case of the access route of the procedure (solid line in the figure) above, other B
The same applies to the procedure. However, in the case of 8 steps,
The number of modules passing through is reduced to one M3 (dashed line in the figure).

FIG. 3 is a diagram showing the exchange of signals between the user APL and the network described above. Although detailed explanation will be omitted,
As shown in the figure, the address management table 21 indicates that a signal bus is created in the order of modules MA-4MB→ME. Therefore, the module M that received the communication procedure information
A sets the buses that pass through the modules in the order written in this address management table 21. Communication is performed using the set access route, and when the communication is completed, a close signal is output from the user APL and the address management table 21 is released. Therefore, at this moment, address management table 2
1 will be initialized.

FIG. 4 is a diagram showing the operation sequence of the present invention. The user APL1 issues an open signal to the network 2, and subsequently sends communication procedure information. On the other hand, on the network 2 side, an address management table 21 as shown in the figure is created. Once the address management table 21 is created, the user APLI issues a Write signal to the network 2, and the network side determines the access route as shown by the broken line in the figure based on the address management table 21, and then Pass information. In other words, the address management table 21 is the module M△
→MB-+ME, so when actually setting an access route, the signals are passed in this order. Other modules present in the network, such as MC, M
O is ignored.

When all the signals have been sent, users APL1 to c
The address management table 21 is reset in order to issue a lose signal and discard the route that has been set so far.

In the above explanation, we took the case of setting the procedure as an example, but
The invention is not limited thereto and other types of procedures can be used. Further, the number and arrangement of modules arranged in the network 2 are not limited to those in the embodiment, and other numbers and arrangement can be used.

[Effects of the Invention] As explained in detail above, according to the present invention, the user AP
By creating an address management table on the network side based on the communication procedure information from L and setting the access route based on this table, the user application can access the network without being aware of the module configuration within the network. It is possible to provide a network control method that enables this.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing the principle of the method of the present invention, FIG. 2 is a diagram showing an example of a system configuration for implementing the method of the present invention, FIG. 3 is a diagram showing signal exchange between the user APL and the network, and FIG. 5 is a diagram showing an operation sequence of the present invention, and FIG. 5 is a diagram showing an example of the configuration of a conventional network system. In FIG. 2, 1 is a user APL 1, 2 is a network, 21.22 is an address management table, 23 is an output circuit, and M1 to M4 are modules. Patent applicant: Fujitsu Limited
Company representative Patent attorney Ijima
Fuji Harukai 1 person rF for signal exchange between user APL and network
t figure 3

Claims (1)

[Claims] After the user application issues a signal for notifying the communication procedure information to the network, the communication procedure information is transmitted (step 1), and the network uses the communication procedure information to transmit information within the network. An address management table is created (step 2), the user application then issues a write signal, the network determines an access route based on the address management table, and communication is performed (step 3), and when the communication is completed, the user application terminates. A method for controlling a network, characterized in that a signal is issued and the network releases an access route and an address management table (step 4).