西门子S7-200PLC控制十字路口交通灯的几种编程方案

Several Programming Scenarios of Siemens S7-200PLC Controlling Crossroad Traffic Lights

以PLC控制十字路口交通灯系统为例,介绍顺序控制法(SCR指令)、经验设计法、定时器和比较指令法等编程方案。

Sequence control method （SCR instruction）, experience design, timer and compare instruction programming scenarios are introduced using the example of PLC controlling crossroad traffic lights.