毕业设计（论文）-电梯的PLC控制系统设计精选.doc

电梯的PLC控制系统设计 摘要 进入九十年代，随着科学技术的发展和计算机技术的广泛应用，人们对电梯的安全性、可靠性的要求越来越高，继电器控制的弱点就越来越明显。将PLC应用于电梯控制，克服了继电器控制的控制线路复杂、体积大、故障率高、难于维护等缺点，控制系统可靠性增强。伴随着自动化技术的发展，组态软件在工业生产的运用也日趋增多，组态软件在电梯控制中的应用，不仅能大大提高电梯的安全性，也提高了电梯的可操作性和可维护性。 本文介绍了基于可编程序控制器(PLC)的电梯控制系统的基本结构、控制原理和实现方法，介绍了电梯PLC控制一些主要环节的实用程序，并叙述了使用组态王来做上位机控制的实现方法，着力解决了上下位机在通讯时出现的问题，把组态王强大的监控和显示功能与西门子S7-2000系列可编程控制器的现场控制完美的结合在一起，利用PPI通信和协议实现上下位机的关联，形成了一套完整的控制系统。 关键字：PLC程序设计，工业组态，电梯控制 The Design of PLC Control System for Elevators Abstract With the development of the technology and the wide application of the computer science after 1980s, more and more people have the demand of the safety and reliability of elevators。 At the same time the control of the electric relay has more obvious weakness PLC is applied to the control of the elevators, which the simplify control lines of the electric relay, small bulk ,the lower fault rate and simple maintance by the way, the reliability of the control system is to be enhanced. With the development of the technology of automation, more and more software of configuration has been applied to the manufacture of the industry. The application to the elevators control of the configuration software not only enhances the safety of the elevators rapidly, but also increases the function of the malignance and the manipulation. This paper introduces the structure, principle of control and ways of the elevators control system. at the same time, and presents the practice programmers of the main PLC links and demonstrates the ways of applying Kingview softwares to the control of the top equipment. The last but not least important, the design solves the communicative problems of the upper computer and combines the function of Kingview supervisory control and the show with the field control of SIEMENS S7-200 programmable logic controllers, which make use of the PPI communication and agreement to realize the relation of the top equipments in order to form a set of the whole control system. Key words: PCL programm