（3）数控滑台，用于切削量小，加工精度要求很高的精加工工序中。可编程控

制器（简称PLC）以其通用性强、可靠性高、指令系统简单、编程简便易学、易

于掌握、体积小、维修工作少、现场接口安装方便等一系列优点，被广泛应用于

工业自动控制中-(3) CNC slide, a small amount for cutting, machining high precision finishing processes. Programmable Logic Controller (PLC) for its versatility, high reliability and simple instruction set, programming is simple to learn, easy to learn, small size, low maintenance, easy installation and a series of site interfaces, it is widely used in industry Automatic Control