IS400JGPA1ACD GE 输入继电器

IS220PPROH1A REV F

IS220PAICH1A,REV c

IS220PAICH2A REV D

IS220PDIAH1A,REV c

IS220PDIAH1A.REV F

IS220PDIAH1A,REV K

IS220PRTDH1A REV E

IS200JPDBG1A

IS200STAIH1ABB

IS20OTBCIH1CA

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描述

输入设备SB1、SB2、FR与PLC内部的“软继电器”X0、X1、X2的“线圈”对应，由输入设备控制相对应的“软继电器”的状态，即通过这些“软继电器”将外部输入设备状态变成PLC内部的状态，这类“软继电器”称为输入继电器；同理，输出设备KM与PLC内部的“软继电器”Y0对应，由“软继电器”Y0状态控制对应的输出设备KM的状态，即通过这些“软继电器”将PLC内部状态输出，以控制外部输出设备，这类“软继电器”称为输出继电器。

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