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以PLC程序的可读性作为出发点,介绍了一种在PLC开发中应用结构化编程思想,从而将软件工程中的编程方法移植到PLC的项目开发中。应用这种方法,可以将PLC程序进行层次分解,进而实现程序开发的多人协作。结构化编程方法能够在程序开发,尤其是大型控制项目的开发过程中,不同编程人员编写出风格一致的程序,增强了PLC程序的可读性,易于程序的移植和扩展。
Taking the readability of PLC program as a starting point, this paper introduces a kind of application of structured programming idea in PLC development, which translates the programming method in software engineering to PLC project development. Application of this method, the PLC program can be hierarchical decomposition, and then to achieve multi-person collaboration program development. Structured programming method in program development, especially in the development of large-scale control projects, different programmers write a consistent style of procedures, enhanced PLC program readability, easy migration and expansion of the program.