【摘要】 结合PLC控制器在桥式起重机电控系统的硬件和软件电路的分析，介绍了PLC控制器控制桥式起重机的设计方法，用PLC控制器实现限位保护的设计技巧。更多还原

【Abstract】 Combined with the analysis of PLC controllers soft and hard ware electrical circle application in the electrical control system of bridge cranes, this paper introduces the designing method by which PLC controllers dominate cranes and the designing techniques by which PLC controllers afford limiting position protection.更多还原