Question

Q2 Design a PLC program, for the conveyor belts that bring out the suitcases at an airport. The circuit must operate as follows: • When the START (a Normally Open push button) is pressed, a siren will sound for 30 seconds. • After 30 seconds, the conveyor will operate, and the siren will stop sounding. • If the STOP (a Normally Closed push button) is pushed, the conveyor will stop. • If the STOP is pressed during the period that the siren is sounding, the siren must stop, and the whole sequence must stop as well. I am wanting to see the basics of a ladderlogic program below together with additional measures you would consider using in terms of mathematical functions (eg Timer) and how applied. This is NOT going to be an executable version but a hand drawn diagram. Please provide a description of the intent of your program.

Answer 1