Programmable Logic Controller (PLC) Questions and Answers – 16

AB Programmable Logic Controller (PLC) Questions and Answers

Suppose we have an Allen-Bradley MicroLogix 1000 controller connected to three pushbutton switches as shown in this illustration:

Allen-Bradley MicroLogix controller

Determine the necessary switch actuation statuses (i.e. pressed versus unpressed) to turn the blue lamp on, given the following program running in the PLC:

Allen-Bradley MicroLogix controller ladder logic

Answer :

  • Switch A = pressed
  • Switch B = released
  • Switch C = pressed

Share Your Answer / Comments

Credits :  Tony R. Kuphaldt – under CC BY 1.0

For More PLC Questions : CLICK HERE

 

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address

1 thought on “Programmable Logic Controller (PLC) Questions and Answers – 16”

Leave a Comment