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介绍了发电厂及变电一所中央信号系统的 PLC 控制,以实例分析着重说明PLC 在事故音响信号系统、预告信号系统及闪光装置的梯形图设计及接线。
The PLC control of a central signal system of power plant and substation is introduced. The example analysis focuses on the ladder design and wiring of PLC in the system of accidental acoustic signal, warning signal system and flash device.