具有网络链接功能的PLC在港口起重机上的应用

Application of Network Link Functional PLC to Cranes in the Harbor

介绍一种具有主从站控制的 PLC系统应用于港口起重机设备 .系统采用了网络通信 ,实现分散信号的集中传输管理 ,明显地减少电缆敷设长度 ,降低了制造成本 。

This paper introduces a PLC system that employs a principal and subo rdinate site. This system controls cranes in harbor. The length of cable can be reduced distinctly because this system adopts network communications co ntrol facility (NCCF), Which can control and centralize the separated equipment. S o the construction cost can be lower. The reliability of the equipment can be improved at the same time.