4640/500AM ABB

DS303A3A01GXA003XF
6FC5357-0BB15-0AA0
1FK6060-6AF71-1AB0
1336F-BRF15-AA-EN
1336F-BRF30-AA-EN
6AU1240-1AA00-0AA0
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描述

某些输入信号不进入PLC系统中有些信号功能简单、涉及面窄,如图6中的手动按钮、过载保护的热继电器触点等,有时就没有必要作为PLC的输入,将它们设计在PLC外围的硬件电路中同样可以满足控制要求。如果外部硬件电路过于复杂,则应考虑仍将有关信号送入可编程序控制器

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