2. Write a documented program that implements the following Start the conveyor when the START button is momentarily pressed. Stop the conveyor when the STOP button is momentarily pressed. Energize the RUN light when the process is operating Energize the STANDBY light when the process is stopped Stop the conveyor and energize the STANDBY light when the right edge of the box is first sensed by the photo sensor. With the box in position and the conveyor stopped, open the solenoid valve and allow the box to fill. Filling should stop when the LEVEL sensor goes true. Energize the FULL light when the box is full. USE the SILO Simulator Screen and the following addresses to simulate the program: START (N.O. contact) 1:1/0 Conveyor Motor 0:2/0 STOP (N.C. contact) I:1/1 Solenoid 0:2/1 Photo sensor (N.O. contact) I:1/3 RUN light 0:2/2 LEVEL sensor (N.O. contact) 1:1/4 STANDBY/FILL light 0:2/3 Full light 0:2/4