可编程控制器梯形图的快速设计方法

提供了可编程控制器控制梯形图的一种快速设计方法，它的关键是如何将三大设计依据转换为程序图，或者说如何用一个图形来描绘电气主令元件、检测元件、执行元件、中间记忆元件在一个工作循环中的动作三要素，然后根据这个图形利用逻辑代数来列写开关函数式，再由此绘制梯形图。这种方法具有快速、简单、一次成功的特点。

Method of double-quick designing trapezium diagram of programmable controller

The paper provided a method of double-quick designing trapezium diagrams of programmable controller,and its key problem was how to switch the three design bases to program diagrams or how to use a diagram to describe the three essential factors of the electrical command unit,checkup unit,executive unit and middle-memory unit in a work cycle.According to this diagram,the switch function formula may be written out through logical algebra and then a trapezium diagram may be drawn.This method is of such characteristics as quickness,simplicity and success on its first program.