PLC Program using START and STOP Buttons

Write a PLC Program using START and STOP Buttons for the following PLC example. 

PLC START and STOP Buttons

There are three machines, each with its own start and stop buttons.

Any two machines may run at one time (also, anyone may run by itself).

Each start button is to have a sealing circuit.

Construct a PLC circuit with appropriate interlocking for this problem.

PLC Program

PLC Program using START & STOP Buttons

You can share the detailed explanation of above PLC ladder logic with comments section.

Author:  Dr. D. J. Jackson

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2 thoughts on “PLC Program using START and STOP Buttons”

  1. The motor2 and 3 on line on should be in series not parallel. The same logic is required for the other control lines.


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