This paper introduced the application of PLC in the centralized station of providing cold, among which control principle, structure of network and software are discussed.
本文介绍了PLC在地铁集中供冷站监控系统中的应用，主要阐述监控系统的控制原理、网络结构及软件结构。
The structure and operation principle of a distributed data acquisition system for embankment safety monitoring based on PLC, are introduced.
介绍了一种基于可编程控制器（PLC）的分布式堤防安全监测数据采集系统的构成及工作原理。
This paper introduces the control principle of PLC in the subway train - cleaning machine, especially de-scribes the structure and principle of signal - collecting system and the cleaning procession.
介绍可编程序控制器在地铁列车洗车机自动控制中的控制原理，着重介绍信号采集系统和列车前后端刷洗过程的控制结构及原理。
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