Run the Pump with Start PB to pump out the water from the tank if level_detector signal is high which indicates the water filled in tank. Once the water level goes below the level detector, Pump will immediately Stop. Pump also gets stopped using Stop PB. Create a project using with a Program (POU) of each of the languages (Structured Text, Ladder Diagram, Function Block, Instruction List and Sequential Flow Chart) for the above scenario.