JPS6019288A - Synchronous processing system of dual connection type computer system - Google Patents

Abstract

PURPOSE:To secure easily the synchronization between two sytems and to have the proper information with a step-out by detecting the synchronization through timer monitor carried out at an input analyzing part and performing a display in a defective synchronization mode by reading a massage out of a table. CONSTITUTION:The input analyzing parts 7 and 11 of systems 1 and 2 transfer the contents of data given from a light pen input part 5 and a keyboard input part 6 to the remote side systems respectively. At the same time, the parts 7 and 11 receive the contents of data from the remote side systems and decide the coincidence or the discidence through comparison. The time is set to both times 10 and 13 for each type of input of data, and identification codes are added to each set time data for mutual discrimination. At the part 7, a corresponding message is read out of a table 9 based on the identification code of the data having the defective synchronization when the synchronization is not through before the time-up of the timer 10. Then a CRT display device 4 displays both identification code and message at a part M on the screen.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synchronization processing scheme in a dual-coupled computer system.

° In order to improve the reliability of power system control systems, a two-line operation method is generally adopted. For this reason, a dual-coupled computer system is adopted even for the computer that serves as the central part of the control system, in which two computers have the same processing functions and are coupled in parallel for the processing target. The other computer functions as a processing device during inspection. In a dual-coupled computer system, as a means of checking that both computers are executing or capable of executing parallel processing, they synchronize their parallel processing steps and check input data or steps. .

In such synchronization of both computers, when an operator uses the operation display to input data from a light pen or keyboard, if there is a significant difference in the load on the computers of both systems, subsequent parallel processing of both systems may be interrupted. become unable. In addition, since the operator is not informed of the inability to perform parallel processing at all, the operations may remain out of synchronization.

An object of the present invention is to facilitate synchronization of both systems.

The object of the present invention is to obtain a synchronization processing method that allows appropriate notification to the operator in case of synchronization loss.

The present invention compares the input/output data of both computers with the data of the other computer based on the time management of a timer, and compares each input/output data with an individual identification code. The present invention is characterized in that a message prepared for each piece of data is obtained and displayed on the display.

The figure is a block diagram showing one embodiment of the present invention.

The computers 1 and λ of the 1st and 2nd systems are connected by an inter-system network system 3 to perform parallel processing, and the ORT display device for operating this parallel processing is connected to the 1st system computer. computer/c computer λ
Additions 5 to 10 of synchronization processing with software or software
- The computer is equipped with //%/J for synchronization processing.

Light Ben input section j is 017 characters on the screen written by Uno's light pen gA attached to the display device≠.

The graphic designation is taken in from the display device l side as data for its position 1 name. The keyboard input section B takes in the operation input from the keyboard B of the display device L as data. The input analysis section 7 takes in the data taken in by the light ben input section S and the keyboard input section 6, and similarly, the input analysis section/l receives the data from the light ben input section S and the keyboard input section s6 via the network system 3. Import the data. Each input analysis section7. /l is the validity of the data on the light pen and keyboard (whether there is any operational error by the operator, etc.)
The synchronized data is sent to control devices r and i, respectively, and processing of the data is performed in parallel in both systems.

Each input analysis section7. // synchronizes data in both systems in order to unify processing in both systems. For this.

Each input analysis section7. // transfers the data contents from the light ben input section S and the keyboard input section t to the partner system, also receives the data contents from the partner system, and compares them with each other to determine whether they match or do not match. In this comparison, each timer 10, /J, which is arbitrarily set to a time to monitor data reception from the partner system, has a time set for each type of data input, and each set time data has an identification mark to distinguish it from the other. A code is added.

The tableta stores messages indicating various types of failures in response to the detection of synchronization failures by the input analysis section 7. In the input analysis section 7, when the synchronization is not completed by the time amplifier of the timer io, the message corresponding to the identification code of the data with the synchronization failure is read out from the table 7 as a synchronization failure, and the message is displayed on the CRT display for operation. The display device 1 displays the job type code and message of the out-of-synchronization data at a location outside the display screen, for example, at the lower corner of the screen (indicated by diagonal lines in the figure) M. indicate.

This allows the operator to recognize the occurrence of a synchronization failure and its contents, and enables correct operation and processing by re-operating the light pen or keyboard or discarding the data that caused the synchronization failure. In addition, when the synchronization is not completed by the time amplifier of the timer 13, the input analysis unit l/
Discard data as out of synchronization.

Each input analysis section7. Synchronization judgment in // is performed by arranging the synchronized data to be used for synchronization processing according to its identification code as shown in the table below, and comparing data received from the other system with the same identification code after the timer time has elapsed to check for consistency. Check.

If the data of both systems match, it is determined that the data has been synchronized. If the contents do not match, the data is discarded to enable the next data input.

In the present invention, the comparison result of the human power analysis section 7 and the comparison result of the input analysis section // may differ.

In this case, each input analysis section 7゜I is connected to each control device.
This can be done by checking the output from I, or by checking the output from each input analysis section7. This is done by exchanging comparison results between //.

Therefore, according to the present invention, synchronization is detected by the timer monitoring by the input analysis section, and when a synchronization failure occurs, the message is read out from the table and displayed.

It makes it possible to guarantee and ensure the sameness of processing in both systems, provides an appropriate interface with operators, and makes it easy to change message content. Also, by setting the timer monitoring time according to the data type when synchronizing, it is possible to perform synchronization processing on multiple inputs in parallel, and 5 hours can be set arbitrarily for each data. Make it.

[Brief explanation of drawings]

The drawing is a block diagram showing one embodiment of the present invention.

Claims (1)

[Claims] In a dual-coupled computer system in which two computers are provided in parallel for processing objects and both computers have the same processing function, both computers have inputs used for their respective processing. A pair of input analysis units that determine whether synchronization is present by comparing output data with the data of the other computer, and a pair of timers that keep time to manage the comparison of individual data in this pair of input analysis units. and a table having synchronization failure messages corresponding to each data for comparison by the human power analysis section, and the pair of input analysis sections each have an identification code for each input/output data. The data is compared with the data from the other computer within the timer's time, and when a synchronization failure occurs, a message corresponding to the data is read from the table and displayed on the operating ORT display device.
A synchronous processing method for dual-coupled computer systems.