3704E TRICONEX

GE IC697CPM790
GE IS215VPROH1BD
A-B 1756-L72
A-B 1756-L72
Moore 16413-1-05
SIEMENS 6DD1683-0BC5
ABB REF542PLUS
FOXBORO FCP270

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Description

即常开触点接通,常闭触点断开;若按下该按钮,则输入继电器X0线圈状态为“0”断电状态,程序中所有X0触点均恢复常态。如果输入继电器连接的输入设备是按钮SB0的常开触点,则情况恰好相反:在该按钮未按下时,输入继电器X0线圈状态为“0”断电状态,程序中所有X0触点均不动作;

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