PLC电梯控制系统设计

南通职业大学毕业设计（论文）PLC电梯控制系统设计Abstractwith the continuous development of social economy,we should meet the needs of socialchange,the number of high-rise buildings is increasing,and the application of elevators in lifeis increasing.Elevators have been widely used in high-rise buildings.As the popularization ofplc technology,the reliability of the control system is greatly improved and the volume of thecontrol device is reduced.Therefore,it is of great practical significance to study the elevatorcontrol system and expand its application.At present,the most common control method iscontrolled by programmable controller.Because of the freedom,simplicity and convenienceof programmable controller,programmable controller is welcomed by various industries inindustry.PLC integrated relay control and computer control,it is flexible and changeable inindustrial use and suitable for a series of places.So it is applied to all aspects of industry.Thisdesign not only briefly describes the origin and development of elevators and PLC,but alsouses Siemens S7-200 programmable controller to design a four-story elevator control system,so that the elevator can go up and down and automatically open and close,elevator fingerlayer control and other functions.Keywords:programmable controller;modularization;software flow chart;ladder diagramprogramming