A self-defined function block and configuration encapsulation method based on component model

Abstract

The invention provides an element model based customized function block and configuration packaging method. The method includes steps of a), defining an inheritable function block element model and designing a standard instantiation interface and a uniform data structure; b) instantiating algorithm type function blocks which are universal in industrial control field; c) defining a configuration file structure; d) based on a control strategy of the inheritable function block element model, packaging into a customized function block; e) storing the customized block information into an originalconfiguration file. According to the invention, from the perspective of function block modeling, thought of an object-oriented method is absorbed, typical features and key data information of the algorithm function block are extracted and the inheritable function block element model is established. On this basis, numerous basic algorithm function blocks of an arithmetic type, a logic type, a control type, a time type and the like are instantiated and algorithm configuration and debugging demands in industrial process control can be met.

Description

technical field [0001] The invention belongs to the field of industrial automation control, in particular to the algorithm configuration of function block diagrams used in industrial process control systems. Background technique [0002] In the field of industrial process control, Function Block Diagram (FBD, Function Block Diagram) has quickly become one of the most widely used industrial control logic programming languages ​​because of its intuitive and easy-to-understand features. However, as a programming language, Function Block Diagram has poor scalability and lacks user-defined features and elements. In order to solve this problem, the user usually proposes a function block requirement, and the industrial control manufacturer develops a special new function block accordingly. In addition, some manufacturers provide other programming languages, such as structured text (ST, Structured Text), as the language for user-defined new function blocks. However, the readabilit...

AI Technical Summary

Problems solved by technology

However, the current general security method is to achieve management through external means such as authority management, which lacks the function of encapsulating and hiding the control strategy and key parameters in the controller, which greatly increases the possibility of leakage

Images