PLC LOGIC

Program two Shift Registers (SR) and one timer (TMR) enabled by Switch 4.

a. The 1st Shift Register will turn the lights ON with the following timing (you cna only use one timer) LED1, immediately. LED2, after 2 seconds. LED3, after 4 seconds. LED4, after 3 seconds.

b. Pause for 4 seconds then turn the lights off using the second SR in reverse order (4,3,2,1), pause one second and go forward again. (You can only use one timer for both Shift Registers).

c. The process should work indefinietely.

PLEASE SHOW STEPS AND LADDER LOGIC FOR THE PROGRAM ABOVE PLEASE (USE the LD and OUT function to complete exercise)