Monitoring method and device

Abstract

The embodiment of the invention provides a monitoring method. The method comprises the following steps: determining a diagnosis sequence corresponding to the current monitoring period through the period sequence number of the current monitoring period, wherein the arrangement position of each diagnosis sequence number in the diagnosis sequence represents the preset execution sequence of a corresponding logic module, converting the pre-registration number of a currently executed logic module into an effective sequence number representing the execution sequence of the currently executed logic module, and judging whether the currently executed logic module accords with the preset execution sequence or not according to the effective sequence number and the diagnosis sequence number corresponding to the currently executed logic module in the diagnosis sequence, so as to realize the monitoring of the execution sequence of the logic module. By applying the method provided by the invention, whether the execution sequence of each logic module in the current monitoring period accords with the preset execution sequence is effectively monitored, and the reliability and the safety of the control system are ensured.

Description

technical field [0001] The invention relates to the field of industrial safety control, in particular to a monitoring method and device. Background technique [0002] Industrial control systems are used in all walks of life in life. Through the application of industrial control systems, people are freed from heavy physical labor, some mental work, and harsh working environments, which greatly improves labor productivity. Industrial control systems pass Execute the preset logic modules in the system to complete the control process, and whether each logic module is executed in the preset order directly determines the correctness and accuracy of the industrial control system. [0003] The existing monitoring method for the execution order of each logic module in the industrial control system is to judge the execution of the current logic module by assigning flag bits to each logic module and performing multiple complex logical operations on the flag bits of the current logic mo...

AI Technical Summary

Problems solved by technology

[0003] The existing monitoring method for the execution order of each logic module in the industrial control system is to judge the execution of the current logic module by assigning flag bits to each logic module and performing multiple complex logical operations on the flag bits of the current logic module. Whether the order is correct or not, each logic module in most industrial control systems is continuously executed according to the monitoring cycle, but in the existing monitoring method, it is impossible to determine whether the logic modules in the monitoring cycle are all in order and in accordance with the order required by the design. complete execution

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