摘 要
本文主要介绍了基于OMRON公司CQM1型可编程序控制器（PLC）的液位
控制系统的工作原理和设计方案。主要内容包括：PLC的结构和工作原理、CQM1
型PLC的使用方法与特性简介；液位控制系统的工作原理及硬件的组成、软件的
编写；系统的运行情况以及对结果的分析。
关键词：可编程序控制器 检测 水位控制
Abstract
This text generally introduced the work principle and design precept
of water level control system which was based on OMRON—CQM1
programming logic controller(PLC). Mostly content contained: the
configuration and work principle of programming logic controller(PLC),
the using technique and characteristic synopsis of CQM1 PLC; the work
principle of water level control system and form of hardware, compiling of
software; circulating Circulation of control system and result analyzing.
Keyword: programming logic controller back—check
water level controlling
