IS200TTURHIC GE

A5E37356659 GE
A5E37876282 GE
A5E34916905 GE
138-4DD01-0AB0 GE
6GK7343-1CX10-0XE0 GE
6SE7038-6GL84-1JA1 GE
1FK7064-4CC71-1QA0 GE
C98043-A7001-L1 GE
C98043-A7009 GE
6SE6430-2UD31-1CA0 GE

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描述

继电器控制线路是由许多真正的硬件继电器组成的。而PLC是由许多“软继电器”组成的,这些“继电器”实际上是存储器中的触发器,可以置“0”或置“1”。硬继电器的触点数有限,一般只有4至8对;而“软继电器”可供编程的触点数有无限对,因为触发器状态可取用任意次。

 

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