hi are you available to discuss this thread , i have the same project for my college plc classroom report and have the same issue were i require the stop button to stop the motors in reverse order with 20 sec delay. I can start the motors up in the correct order with the specific timed delayed starts.For a start I would use the normal start rung you have but with a internal bit register in place of the M3.
From the program description I assume there is no E-Stop, just a sequential stop?
Max.
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This this thread was moved from Help with a Simple PLC ladder diagram.