PLC Ladder Logic Programming Examples with detailed ...
· This is for the workers protection and I believe this piece of code should be used in all those projects in which moving parts are used, like for example conveyor belts, Grinder, chains, belts etc. In this project when a conveyor belt or Grinder is turned ON, first of all a buzzer is activated for at least 5 seconds which alerts the workers to move away from the grinder or conveyor belt.