This paper describes appIication of PLC in beIt discharging carrier automatic controI system,and reaIizes the unmanned beIt discharging carrier,reduces accidents,reIeasing the working strength greatIy,ensuring the continued operation of beIt dis-charging carrier,creating a better economic and sociaI benefits.%介绍了PLC在皮带卸料小车自动布料控制系统中的应用，实现了皮带卸料小车无人值守，减少了事故的发生，减轻了工人的劳动强度，保证了卸料小车布料的持续运行，创造了较好的经济和社会效益。
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