An Online Debugging Method of Function Block Diagram Based on Metadata Model

Abstract

The invention provides a metadata model based function block diagram online debugging method. The method includes a) packaging typical real time data point and related essential properties thereof inan industrial control process into a metadata model having a uniform structure; b) based on the metadata model, defining and realizing different kinds of function blocks; c) introducing primitive information elements of the different function blocks on the basis of control command sets and metadata sets; d) generating an algorithm configuration file based on the above configuration file structureby configuration software and implementing an online monitoring function in online debugging through downloading and running the algorithm configuration file in an industrial controller and reading the metadata sets in the algorithm configuration file periodically; e) implementing an online value setting function through modifying the metadata sets by the configuration software. By adopting the method provided by the invention, communication efficiency is improved, safety of real time control data is improved and great convenience is provided for online real time debugging of control strategies.

Description

technical field [0001] The invention belongs to the field of industrial automation control, in particular to the online debugging for function block diagrams in industrial process control systems. Background technique [0002] In the field of industrial process control, the control requirements are often different due to the different characteristics of the controlled object, which leads to the fact that its algorithm logic must have the function of programmable configuration. In the initial stage of project implementation, the project implementation personnel will carry out algorithm configuration according to the actual situation of the site, and carry out online debugging and operation. After the project is put into operation, the user needs to conduct online debugging of the configuration logic according to the actual situation on site, including online monitoring of the operation execution trend of the specified control logic unit, and modification of important paramete...

AI Technical Summary

Problems solved by technology

However, this mechanism greatly increases the difficulty of online debugging. On the one hand, it makes the process of monitoring the change trend of variable data in the controller complicated, and the corresponding real-time data must be obtained through repeated indexing and positioning; on the other hand, many intermediate states Real-time data cannot be monitored and viewed, which is not conducive to in-depth online debugging

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