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可编程序控制器简称(PLC)是一种通用的程序控制装置。它与一般逻辑控制系统相比,较易改变控制程序(可以根据被控对象的不同要求随意编排控制程序),所以能适应各种控制对象、如冶金、化工、机械、煤炭、发电等工业部门的生产系统都可使用。它既具有小型计算机的灵活性、又具有一般继电控制装置的直观性,是计算机的一个重要分支,国外
Programmable Logic Controller (PLC) is a universal program control device. Compared with the general logic control system, it is easier to change the control program (which can be arbitrarily arranged according to the different requirements of the controlled object), so it can adapt to various control objects such as the metallurgical, chemical, mechanical, coal, power generation and other industrial sectors The production system can be used. It not only has the flexibility of small computers, but also has the generality of the relay control device is an important branch of the computer, foreign