Output switch module is a low voltage PLC internal drive external signals into the switching signal output device and to achieve internal and external PLC electrical signal isolation.
开关量输出模块是将PLC内部低电压信号转换成驱动外部输出设备的开关信号，并实现PLC内外信号的电气隔离。
Inspect switching device, control, interlocking, protection, signal and functions of...
联锁、保护、信号和其他装置的功能。
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