Develop a ladder logic program to control a system with two normally closed push buttons, two normally open

photosensors, and two conveyors. When the normally closed start push button is momentarily pressed conveyor

$1$ starts moving until a box reaches the normally open photosensor $1.$ After the box reaches photosensor $1,$

conveyor $1$ stops and conveyor $2$ starts to move. Conveyor $2$ stops when the box reaches the normally open

photosensor $2.$ If the normally closed stop push button is pressed at any moment, the system stops