大专毕业论文--基于PLC平台的液态混合装置设计.doc

【摘要】 工业生产中需要良好的人机界面对现场的设备进行检测与控制，传统的方法是采用控制面板上的文字来表示操作按钮的功能，数字表或者模拟表来显示现场设备的数据，存在可读性差的问题。目前，在现代化的企业中，可编程控制器组态软件技术的应用实践动手能力及现场分析问题和解决问题的能力设计使用可编程控制器(PLC)，功能强大，系统配置灵活，根据控制要求灵活方便地进行系统配置，组成不同I/O点数和不同功能的控制系统 可编程控制器现场数据 ABSTRACT Industrial production in the man-machine interface needs a good on-site equipment for testing and control, the traditional approach is the text on the control panel to indicate the function button operation, the digital or analog form table to display equipment at the data, there can be Reading bad problem. At present, the modernization of enterprises, the programmable controller and configuration software provides a well-designed combination of man-machine interface methods. Better monitoring equipment . The main design a variety of topics liquid mixing device configuration design configuration control system, PLC and configuration through the application of software technology to achieve control of the flow of liquid, mixing ratio, as well as the mixing process monitoring devices. Aims to help us solve practical engineering problems the capacity and ability to practice hands-site analysis and problem-solving abilities; Design of programmable controller (PLC), a powerful, flexible system configuration, in accordance with requirements of flexibility and control for system configuration, composed of different I / O points and the different functions of the control system. 【KEY WORD】Readability、Field data 目 录 一、引言 ……………………………………………………………………1 （一）选题依据 ……………………………………………………………1 （二）PLC系统设计方法 …………………………………………………1 （三）组态王软件特点及作用……………………………………………4 二、基于PLC的液态混合装置硬件部分设计……………………………5 （一）设计要求……………………………………………………………5 （二）工艺分析……………………………………………………………6 （三）PLC选型…………………………………………………………… 6 （四） PLC的输入输出端子分配表及接线图……………………………7 三、PLC系统软件设计 ……………………………………………………8 （一）PLC常用指令介绍 …………………………………………………8 （二）PLC控制梯形图设计 ………………………………………………9 （三）PLC系统指令表…………………………………………………… 9 四、组态软件监控及测试 ………………………………………………10 五、结论 …………………………………………………………………13 六、致谢词 ………………………………………………………………13 七、参考文献 ……………