336A4940DTP12BL CABLE RJ45 PATCH 12′ BL CAT5E 输入继电器

DCS33-33E
HMD01.1N-W0012-A-07-NNNN
6FC5210-0DF31-2AB0
DSB2S154-211E-000H
B&R贝加莱 3NC154.60-2
PXI-6225
2711-K9C1
MAC112D-0-FD-2-C/130-A-2/S013
Kontron CP369, 31.263-1010.1 B/00
4PP420.0571-45
DSQC679
AIP444-S1
DSQC663
BERGERLAHRWD3-007
6SE7021-0EA61

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描述

输入继电器是PLC接收外部输入的开关量信号的窗口。PLC通过光耦合器,将外部信号的状态读入并存储在输入映像寄存器中。输入端可以外接常开触点或常闭触点,也可以接多个触点组成的串并联电路或电子传感器(如接近开关)。在梯形图中,可以多次使用输入继电器的常开触点和常闭触点。

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