PLC Approach to StudyTimer -BasedProcess Controlling

Abstract To control any industrial process, PLC is the basic tool used for controlling purpose. Monitoring of particular process for specific duration of time and controlling of devices based on that is one of the most important things in an automation. Timer ensures one that how much time is required to complete the process, so one can sure about waiting time of the process. Timing based controlling operations needed precise control of timing. In an industrial plant there is anoperation where one has to start the process at particular time, keep the delay between two processes, stop the process atparticular time, alternate repetition of processes etc., which requires the timer as an essential one to take decision based on program designed.The paper aims to build atimer-based controlling of processes/devices using PLC, so that one can understand the use of timer and types of timers used in an operation. It also includes the detailed information regarding hardware wiring of various components or devices with PLC and the basic ladder logic programming ideas to control the processes based on timer. Keywords – PLC, Hardware components,software-based timers,Input Switches/Sensors,Ladder diagram, Process design way.