摘要
针对水厂工作水泵多、现场离控制站距离远的特点 ,提出了一种基于MPI多点网络的自动监控系统的设计方法 ,分析了系统的工作原理 ,介绍了系统中数据的采集与处理、主站与从站的通信原理以及系统软件的设计。由于这种系统的主、从站PLC之间采用MPI网络通信 ,具有运行可靠、性能价格比高的特点 ,所以适用于中小规模水厂的分布式监控场合。
In accordance with the features of water works, i.e., many pumps in operation and the pumps are far from the control station, the method of designing an automatic monitoring and control system based on MPI is presented. The operational principle of the system is analyzed, the data collection, data processing; communication between master station and slave station as well as design and system software are discussed. Because MPI network communication is used among master station, slave stations and PLC, the system is reliable and high cost-effective. It is more suitable for small and medium sized water works for distrbuted monitoring and control.
出处
《自动化仪表》
CAS
2005年第2期44-45,48,共3页
Process Automation Instrumentation
