描述
例如某负载可在多处启动和停止，可以将多个启动信号并联，将多个停止信号串联，分别送给可编程序控制器的两个输入点，如图5所示。与每一个启动信号和停止信号占用一个输入点的方法相比，不仅节约了输入点，还简化了梯形图电路。
Reliance Electric 45C-201/45C201
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RELIANCE ELECTRIC 831677 NSPP 831677
RELIANCE ELECTRIC 45C994 NSFP 45C994
RELIANCE ELECTRIC 0-57407-4 USPP 0574074
RELIANCE ELECTRIC 0-57407-4D USPP 0574074D
RELIANCE ELECTRIC 0-57407-4F USPP 0574074F
RELIANCE ELECTRIC 0-57407-4J USPP 0574074J
RELIANCE ELECTRIC 57C-407 USPP 57C407
RELIANCE ELECTRIC 0-57407-4H USPP 0574074H
RELIANCE ELECTRIC 0-51865-21 USPP 05186521
Reliance Electric 0-52841 Control Card 052841 New
Reliance 0-49001-5 Cardpak Power Supply 049001
