目录第1章引言....................................................11.1设计概述.......................................................11.2设计目标与意义.................................................11.3章节安排.......................................................2第2章方案论证与选型.............................................32.1设计任务分析...................................................32.2方案论证与选择.................................................32.2.1方案一：...................................................32.2.2方案二：...................................................32.3方案确定.......................................................3第3章硬件电路设计..............................................43.1恒温水箱系统的基本组成..........................................43.1.1控制系统...................................................43.1.2信息采集元件：..............................................63.1.3加热元件与继电器：..........................................43.2可编程控制器基本知识...........................................63.2.1可编程控制器的特点..........................................73.2.2PLC的结构与原理............................................73.2.3PLC输入和输出类型..........................................73.2.4转换原理...................................................83.3变频器的介绍...................................................93.3.1基本组成..................................................113.3.2功能作用..................................................113.4MCGS组态的介绍................................................93.4.1MCGS组态的主要功能.........................................93.4.2MCGS嵌入版组态软件的主要特点................................93.5PLCI/O分配表.................................................123.6PLC外部接线图................................................123.7恒温水箱系统整体外部硬件接线图.................................13第4章软件设计....................................................144.1MCGS的简介.....................................................144.2MCGS主要特性和功能.............................................144.3MCGS的构成........................................