课题：运料小车的PLC控制系统设计专业：电气工程及其自动化班级：姓名学号：指导教师：设计日期：成绩：目录一、设计目的作用.............................................................................................3二、设计要求....................................................................................................31三、设计的具体实现.........................................................................................43.1系统概述.............................................................................................................................................43.2控制系统在运输小车中的作用与地位..............................................................................................43.3运输小车系统方案的选择..................................................................................................................53.4运料小车控制系统的方案论证..........................................................................................................63.4.1运料小车的运动流程..................................................................................................................63.4.2方案论证......................................................................................................................................73.4.3PLC的选型.................................................................................................................................83.4.4S7-200CPU226简介.................................................................................................................8四、系统设计....................................................................................................84.1系统变量定义及分配表.....................................................................................................................84.2系统需要的元器件明细表..................................................................................................................94.3系统接线图设计...............................................................................................................................104.4软件设计............................................................................................................................................114.4.1系统流程图................................................................................................................................114.4.2系统顺序功能图........................................................................................................................124.4.3系统梯形图................................................................................................................................134.4.4系统语句表................................................................................................................................20五、单元电路设计与分析............................................................................245.1、系统仿真结果如下........................................................................................................................24六、总结.........................................................................................................26七、附录.........................................................................................................28八、参考文献......................
