Through having ladder diagram(LD)language,sequence diagram(SFC)language and ST language in ECS-100 control system based,three example programs such as median-of-three of AI signals,four responders and traffic lights were designed and their corresponding analysis and descriptions were presented.%利用ECS-100控制系统中的梯形图(LD)语言、顺控图(SFC)语言和ST语言,设计了AI信号三取中、红绿灯和四路抢答器3个实例程序,并给出了相应的分析与说明.
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