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目 录
1 引言 .................................................................3
1.1 温度控制系统的意义 .................................................3
1.2 温度控制系统背景 ...................................................3
1.3 研究技术介绍 .......................................................3
2 硬件设计 .............................................................6
2.1 硬件配置 ...........................................................6
2.2 I/O 分配表..........................................................8
2.3 硬件接线图 ........................................................10
3 软件设计 ............................................................10
3.1 PID 控制程序设计...................................................15
3.2 S7-200 程序设计流程图..............................................16
3.3 内存地址分配与 PID 指令回路表 ......................................17
3.4 S7-200 程序设计梯形图..............................................17
4 组态编程 ............................................................25
4.1 PLC 通信配置与通信方式.............................................25
4.2 网络的通讯 PPI 协议 ................................................25
4.3 组态软件 Kingview..................................................27
4.4 组态王定义外部设备和数据变量 ......................................27
4.5 组态王界面 ........................................................30
4.6 启动组态王 ........................................................29
结论 ...................................................................32
致谢 ...................................................................35
参考文献 ...............................................................36