摘要可编程控制器(PLC)以微处理器为核心,普遍采纳依据继电接触器控制系统电气 原理图编制的梯形图语言进行程序设计,编程容易,功能扩展方便,修改灵活,而且 结构简单,抗干扰能力强
欧姆龙 CPM2A 系列可编程控制器指令丰富,可以接各种输 入、输出设备,并有丰富的特别扩展设备,其中的模拟输入设备和通信设备更是符合 交通灯控制系统的要求与特点,能够方便地联网通信
可以利用梯形图和语句表进行 编程,实现了十字路交通灯控制系统的自动化
关键词:可编程控制器;交通灯;梯形图;语句;AbstractProgrammable logic controller (PLC) by microprocessor as the core, generally adopted according to the relay contactor controlling system of electrical schematic diagram of the ladder diagram language program design, programming, easy extension, modification, flexible and convenient, simple in structure, strong anti-jamming capability
CPM2A omron series programmable controller can meet all kinds of rich command input and output devices, and has abundant special equipment, including expansion of the analog input devices and communications equipment