基于PLC多种液体混合控制系统.doc

基于PLC的多种液体混合控制系统设计 摘 要 在上世纪60年代末PLC的出现，便以其独特的优点得到迅速地发展和普及，并在冶金、机械、纺织、轻工、化工等众多行业中取代了传统的继电器控制。掌握可编程序控制器的工作原理，具备设计、调试和维护可编程序控制器控制系统的能力，已经成为现代工业对电气技术人员和相关工科学生的基本要求。将PLC用于多种液体混合控制系统，对于学习和在工业上的应用，尤其是在化工工业上的应用显得非常的重要。 设计以三种液体混合控制系统为例，根据设计要求对其硬件系统组成、软件系统设计和整个系统的整合调试等有关设计及制作过程做简单的介绍和说明，以阐述PLC在多种液体混合控制系统中应用。同时，设计采用西门子（SIEMENS）公司的S7-200系列机型进行了控制系统的PLC程序设计，并且利用组态王软件对系统自动运行、运行画面同步显示成功地进行了画面组态。 关键词：多种液体，混合装置，自动控制，组态 PLC-BASED A VARIETY OF LIQUID MIXED CONTROL SYSTEM DESIGN ABSTRACT In the 60s at the end of the last century the emergence of PLC, the advantages of its unique rapid development and popularization of, and in metallurgy, machinery, textile, light industry, chemical industry and many other industries to replace the traditional Electrical relay control. PLC master the working principle, with the design, commissioning and maintenance of PLC control systems, has become a modern industrial electrical technicians and engineering students the basic requirements. Will be used PLC on a variety of liquid mixed control system, for the study and application in industry, especially in the chemical industry it is very important applications. The design take three kind of liquids mixed control system as an example, design requirements in accordance with its hardware systems, software system design and debug the entire system, such as the integration of the design and production process of doing a brief introduction and description. To exposit that PLC applies in a variety of liquid mixed control system. At the same time, the design of the use of Siemens S7-200 series models for the PLC control system programming, and use the software on the system Kingview run automatically, run the screen simultaneously show the successful conduct of the configuration screen. KEY WORDS: A variety of liquid, Mixed devices, Automatic control, Configuration 目 录 摘 要 I ABSTRACT II 第一章 概 述 1 1.1 课题内容 1 1.1.1 选题的目的 1 1.1.2 课题设计的意义 1 1.1.3 课题设计方案 1 1.2 PLC的简介 1 1.2.1 PLC的特点 2 1.2.2 西门子S7-200 PLC 2 第二章 系统