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 Logic Controller(PLC)course is a very practical course, PLC is an application technology of computer technology in the field of industrial control.
可编程序控制器简称PLC课程是一门实践性很强的专业课程，PLC是计算机技术在工业控制领域的一种应用技术。
Communication between computer and programmable controller plays a very import role in the control system of Product Line.
在该生产线的控制系统中，控制计算机与可编程控制器的通讯具有非常重要的作用。
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