【摘要】 基于定时器、中间继电器和可编程序控制器(PLC)设计了一套交通灯控制系统。介绍了交通灯控制系统的控制要求,给出了可编程序控制器的输入输出地址,分析了交通灯控制系统的硬件接线。同时给出了交通灯控制系统的时序图、顺序功能图与梯形图程序,并对梯形图程序进行了优化。更多还原

【Abstract】 A traffic light control system was designed based on timer,intermediate relay and PLC.The control requirements of the traffic light control system were introduced.The input and output addresses of the PLC were given,and the hardware connection of the traffic light control system was analyzed.In the meantime,the timing diagram,sequence functional diagram and ladder diagram sequence of the traffic light control system were given,and the ladder diagram sequence was optimized.更多还原