The system is composed of three subsystems, they are the signal monitor subsystem, the PLC (the Programmable Logical Controller) one and the host computer control ore.
该自动化系统分为信号监测、PLC(可编程逻辑控制器)控制、上位机控制三大部分。
Programmable logical controller is a new kind of industrial controller which is developed on the bases of micro-processor and synthesizes computer and automation technology.
可编程序控制器是以微处理器为基础，综合了计算机技术与自动化技术而开发的新一代工业控制器。
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