A novel industrial man-machine interface variable access method and system

Abstract

The invention discloses a novel industrial human-computer interface variable access method, comprising the steps of selecting and displaying the current monitored picture; acquiring external variable access frequency parameters corresponding to picture objects of the current monitored picture; detecting interference of external variable areas corresponding to the picture objects of the current monitored picture, and combining external variables corresponding to the picture objects of the current monitored picture according to the interference; accessing the external variable areas after the picture objects of the current monitored picture are correspondingly combined according to the external variable access frequency parameters to acquire corresponding external variable values, and caching the variable values corresponding to the picture objects of the current monitored picture; when updated variable values are determined, notifying the monitored picture that the external variable values have been updated; acquiring the updated external variable values among the external variable values corresponding to the picture objects of the current monitored picture, and updating the picture display of a display module in real time according to the updated external variable values. The invention further discloses a corresponding system. By adopting the method and the system, network resources can be saved, the communication efficiency can be improved, and interference can be prevented.

Description

Technical field [0001] The invention relates to the field of industrial man-machine interface access control, in particular to a method and system for accessing industrial man-machine interface variables. Background technique [0002] Industrial Human-Machine Interface (HMI) is a medium for transferring and exchanging information between users and machines and equipment. Users can configure different screens according to the needs of control, and configure text, Screen objects such as buttons, graphics, numbers, and charts are used to process or monitor the work of machinery and equipment. [0003] Industrial man-machine equipment is an important part of modern equipment. The use of industrial man-machine interface can clearly indicate and inform the operator of the working status of various industrial controllers or industrial equipment monitored by the industrial man-machine equipment. The humanization of industrial man-machine equipment The design is conducive to improving the ...

AI Technical Summary

Problems solved by technology

[0008] Because the load of network access is determined by the number of variables configured and the access speed, when there are more variables and faster access frequency, the HMI will occupy more network resources and consume valuable industrial fieldbus resources. , thus reducing the efficiency of communication

In addition, in the prior art, if there is interference between external variables, the obtained external variables may be inaccurate

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