Sequential control design method is an advanced (regular) design method for design of PLC ladder diagram, and it is a powerful tool.
顺序控制设计法是设计PLC梯形图的一种先进规范的方法和有力工具。
With PLC checking, application of state information of PLC and PLC ladder diagram, the fault of CNC machine tool can rapidly been diagnosed accurately.
通过对可编程序控制器plc的检查，利用PLC的状态信息和PLC梯形图，可以快速、准确地判断数控机床故障。
This paper introduces three sequential control design methods of PLC ladder diagram with an example, which based on the example of the kind of S7-200 PLC from SIEMENS.
本文以西门子s7 - 200型号PLC为例，用一个具体的实例介绍了PLC梯形图的三种顺序控制设计方法。
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