Control of a Four-Level Elevator System Using a Programmable Logic Controller

This project reports on the design and implementation of a PLC-based controller for a four-level elevator. The PLC used is an Omron Sysmac C20K with 12 inputs and 8 outputs. The design incorporates an intelligent controller that services all the requests in an energy-saving way, rather than on a first-come, first-served basis. Some suggestions on how to extend this system to the control of more than four floors are also included.