Design of Elevator Control System Based on S7- 200PLC

Abstract

With the acceleration of urbanization and the increasing number of high-rise buildings, elevators, as key equipment for vertical transportation, have attracted significant attention regarding the safety, reliability, and efficiency of their operation. This design develops a four-floor elevator control system based on S7-200PLC. It realizes the following functions: the second and third floors support both upward and downward request functions (with corresponding indicator lights turning on), the first floor only supports the upward request function, and the fourth floor only supports the downward request function. Meanwhile, the elevator automatically opens its door after arriving at each floor and closes the door automatically 6 seconds later. The design aims to achieve precise control and efficient operation of the elevator.