PLC简介 Introduction to PLC
来源:wenku163.com 资料编号:WK1635707 资料等级:★★★★★ %E8%B5%84%E6%96%99%E7%BC%96%E5%8F%B7%EF%BC%9AWK1635707
资料介绍
PLC(即可编程逻辑控制器)是机械控制中为替代必要的继电器时序电路而发明的一种设备。PLC工作时通过查询输入端并根据其状态打开或关闭输出。用户通常用软件或编程器输入程序,从而获得期望的结果。 A PLC (i.e. Programmable Logic Controller) is a device that was invented to replace the necessary sequential relay circuits for machine control The PLC works by looking at its inputs and depending upon their state, turning on/off its outputs. The user enters a program, usually via software or programmer, that gives the desired results. |