1769-PA4 A-B

A-B 1769-PA4
SCHNEIDER 499TWD01100
A-B 1732E-16CFGM12R
A-B 1746-IB16

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Description

输出点数。在某些场合,输入点可以一点两用。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,

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