Method for implementing working main station and standby main station synchronous recording

Abstract

The invention discloses a method of making records in a synchronous way for a work master station and a spare master station. Steps included are as follow: a SOE work master station sends a hardware synchronous pulsing signal to a SOE spare master station; the SOE work master station sends an absolute time required to send the hardware synchronous pulsing signal to the SOE spare master station; the spare master station calculates time difference (Delta t) between the time (T1) of receiving the hardware synchronous pulsing signal and the absolute time required to send the hardware synchronous pulsing signal. The spare master station judges the time difference (Delta t). When the absolute time difference (Delta t) is beyond a specified limit to an extent, the SOE spare master station perform time compensation; the SOE work master station sends the original record from a SOE slave station to the SOE spare master station. The invention can help the work master station and the spare master station make records in a synchronous way, realizing a redundant function of the SOE spare master station for the SOE work master station.

Description

technical field [0001] The invention relates to the technical field of equipment process control, in particular to a method for realizing the synchronization of SOE records of a Sequence Of Event (Sequence Of Event, SOE) working master station and a standby master station. Background technique [0002] In the industrial control system, it is often necessary to detect the operating status of various equipment, and record the changes and time of the operating status of various equipment. Analysis, in order to better maintain the normal operation of various equipment. What needs to be explained here is that the record of the change and time of various equipment operating states is the sequence of events SOE record known to those skilled in the art, and the change of the equipment operating state and the time of change are called SOE events. The record of what type of fault occurred at XX minute XX second XX milliseconds at XX hour. [0003] In order to improve the reliability...

AI Technical Summary

Problems solved by technology

But once the master station computer of the upper layer network breaks down, so that the clock signal A is not sent, then these SOE sub-stations will not get a consistent clock signal A, so the absolute time for these SOE sub-stations to record SOE events cannot be based on the same An absolute time base is obtained, so the SOE system will record SOE events incorrectly, which seriously affects the analysis and maintenance of the system operating status by system maintenance personnel

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