1.2 发展史 ..............................................................................................................................1
1.3 发展现状 ..........................................................................................................................2
1.4 本课题研究任务 ..............................................................................................................2
第二章 方案论证 ............................................................................................................................4
2.1 控制器种类选型 ..............................................................................................................4
2.1.1 单片机优缺点 ......................................................................................................4
2.1.2 PLC 优缺点 ...........................................................................................................4
2.1.3 总结 ......................................................................................................................4
2.1.4 结构框图 ..............................................................................................................4
第三章 硬件电路 ............................................................................................................................5
3.1 电源 ..................................................................................................................................5
3.2 PLC 部分 ...........................................................................................................................5
3.3 电机部分 ..........................................................................................................................5
3.4 信号检测部分 ..................................................................................................................5
3.5 工作原理流程图 ..............................................................................................................5
3.6 总电路图 ..........................................................................................................................6
第四章 S7-300 指令系统及其编程 ..............................................................................................8
4.1 STEP 7 的指令结构介绍..................................................................................................8
4.2 输入输出地址分配 ...........................................................................................................8
4.3 程序设计 ...........................................................................................................................9
第五章 调试 ..................................................................................................................................17
5.1 PLC 仿真 .........................................................................................................................17
5.2 调试结果分析 ................................................................................................................25
第六章 总结 ..................................................................................................................................26
第七章 致谢 ..................................................................................................................................27
参考文献 ........................................................................................................................................28
