This paper elaborates on a data structure and implementation method of ladder diagram programming system.
详细阐述了一种梯形图编程系统的数据结构与实现方法。
It discuss the control principle of the system. It gives the design of site signal, ladder diagram, programming, use method of the system, and so on.
文中讨论了控制原理，作出了现场信号设计、梯形图及编程、系统使用方法等。
Algorithm flowchart of PLC programming and the ladder diagram of some crucial steps are given, such as quantizing program of the input signal and the inquiry program of fuzzy control table.
给出了PLC程序设计的算法流程图及输入量量化程序、模糊控制表查询程序等关键步骤的梯形图。
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