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介绍了一类基于PLC的分布式控制系统(DCS)的设计任务与方案。其主要内容为上位机软件和现场总线网络,即PLC与计算机间的ControllerLink通信技术和Omronα系列PLC与Cpm1a系列PLC间的通信协议宏功能。
The design task and scheme of a kind of DCS based on PLC are introduced. The main contents of the host computer software and field bus network, that is, PLCLink Controller and PC communication technology and Omronα series PLC and Cpm1a series PLC communication protocol between macro functions.