用PLC实现双稳态功能的单按钮启/停控制

Realization of Bistable Control with Single Button

论述了用西门子PLC软件构造单按钮启/停控制的双稳态按钮的四种方法,并分析了每种方法的工作原理和特点,探讨了利用PLC编程软件实现硬件功能的可行性,拓展了PLC程序的编制思路,达到了节省PLC输入点的目的。

Four methods to build bistable control with single button with Siemens PLC software were discussed, and their working principles and characteristics were analyzed. Feasibility of realizing hardware functon with PLC programming software was explored, which extended the idea of PLC program and achieved the aim of saving PLC input pionts.