5SDD71B0210 ABB

531X139APMABM6
531X139APMAEG2
531X139APMALG2
531X139APMAPG2
531X140CCHANM2
531X146BDHAHG1
531X146BDHALG1
531X170TBSABG1

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描述

PLC与电气回路的接口,是通过输入输出部分(I/O)完成的。I/O模块集成了PLC的I/O电路,其输入暂存器反映输入信号状态,输出点反映输出锁存器状态。输入模块将电信号变换成数字信号进入PLC系统,输出模块相反。I/O分为开关量输入(DI),开关量输出(DO),模拟量输入(AI),模拟量输出(AO)等模块。

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