水泵自动化毕业答辩论文目 录序 言 ..............................................................2第 1 章 水泵控制系统概述 ..............................................4（框图及工作原理）.............................................4...............................................................6 技术要求 ......................................................6 控制性能和方式 .........................................7、逻辑运算、记录及显示、打印............................7........................................................8........................................................9........................................................9第 2 章 PLC 的选型 .....................................................10 PLC 简介 .....................................................10 PLC 基本概念 ...........................................10 PLC 基本结构 ...........................................12 PLC 的工作原理 .........................................14 PLC 系统的其它设备 .....................................15 PLC 的通信联网 .........................................15 PLC 软件系统及常用编程语言 .............................16 PLC 的选择 ...................................................17.......................................................17 S7-300 的基本性能 ......................................17 S7-300 的基本组成 ......................................18 S7-300 的通讯 ..........................................19 S7-300 的基本结构 ......................................20第 3 章 水泵 PLC 控制设计 ..............................................21..............................................................21.......................................................21.......................................................21..............................................................23.......................................................23.......................................................26..............
