随着社会的不断发展，楼房越来越高，而电梯成为了高层楼房的必须设备。电梯

With the continuous development of society, more and more high buildings, high-rise buildings and elevators became necessary equipment. Elevator operation elevator from the handle switch, button control elevator into the current group control elevator, made an indelible contribution to the high-level transportation. <br>In order to allow passengers to use more comfortable, safer and more environmentally friendly elevator, an analysis of the elevator or necessary, there is the basic structure of the PLC control system, the advantages and disadvantages of the PLC application and the elevator. PLC control to overcome the many shortcomings of the elevator control relays, with simple programming, improve operational safety and ease of maintenance, good flexibility and good scalability, enhanced anti-jamming capability and other advantages, it is applied to a set of elevator control system. <br>PLC control system mainly using PLC logic switch control function to control the PLC through the door of the elevator, floor display, in car and hall call registration, overload alarm, orientation, acceleration and braking start parking modules. These are to be analyzed by the performance requirements of the elevator, determining the input-output port, and then select the appropriate model PLC redistribution I / 0 port. <br>Keywords: PLC; elevators; control system; the basic structure;

随着社会的不断发展，楼房越来越高，而电梯成为了高层楼房的必须设备。电梯从手柄开关操纵电梯、按钮控制电梯发展到了现在的群控电梯，为高层运输做出了不可磨灭的贡献。<br>为了让乘客可以用到更舒适、更安全、更环保的电梯，对电梯的分析还是很有必要的，有PLC控制系统的基本结构，PLC应用与电梯的优势和缺点。PLC控制克服了继电器控制电梯的很多缺点，有着编程简单、提高了运行安全性并便于维修、灵活性好及扩展性能好，增强了抗干扰能力等优点，它被施加到了电梯控制系统的设置。<br>PLC控制系统主要是利用PLC的逻辑开关控制功能，通过PLC来控制电梯的开关门、楼层显示、轿内与厅外的召唤登记、超载报警、定向、启动加速和制动停车等模块。这些都是要通过分析电梯的性能要求，来确定输入输出口，然后来选出合适的PLC型号，再分配I/0口。<br>关键词：PLC；电梯；控制系统；基本结构；分析

With the continuous development of society, the building is higher and higher, and the elevator has become the necessary equipment of high-rise buildings. Elevator has developed from handle switch operated elevator and button controlled elevator to group controlled elevator, which has made indelible contribution to high-rise transportation.<br>In order to let passengers use more comfortable, safer and more environmentally friendly elevator, it is necessary to analyze the elevator. There are the basic structure of PLC control system, the advantages and disadvantages of PLC application and elevator. PLC control overcomes many shortcomings of relay control elevator. It has the advantages of simple programming, improved operation safety, easy maintenance, good flexibility and expansion performance, and enhanced anti-interference ability. It is applied to the elevator control system settings.<br>The PLC control system mainly uses the logic switch control function of PLC to control the elevator door opening and closing, floor display, calling registration inside and outside the car hall, overload alarm, orientation, start acceleration, brake parking and other modules. These are to analyze the performance requirements of the elevator, to determine the input and output port, and then to select the appropriate PLC model, and reallocate the I/0 port.<br>Key words: PLC; elevator; control system; basic structure; analysis