Description
如某行程开关只在自动循环时有用,而某按钮只在手动调时用,当输入点不够时,则可将上述两个输入信号共用一个PLC输入点,利用PLC的转移标号指令,不会使两个信号混淆。同样,为节省输出点,也可将与自动控制无关的输出点,如电动机的起动、停止,
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