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[Moved]Question on Ladder Logic

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steve23h

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I am currently building a program that I need a little help with. I will try to make this as simple as possible to not confuse anyone.

I have a motor that is run off of a SSR, which I currently have wired and are able to turn off and on through my PLC. What I need to do is have the motor cycle once, pause for a second, cycle again, pause for a second, and cycle a third time. This needs to happen upon start up and then everytime a sensor is gets blocked and unblocked (I.E. something passes by it).

Please let me know if there is anymore information I Need to give or if that is enough.

Thank You
Steve
 

The basic sequence can be programmed with a chain of timers (e.g. on-delay timers) and some additional logic.

Timer blocks look slightly different in each PLC vendor's tool, you should review the documentation of yours. I guess there are also programming examples in the manuals, otherwise you'll find plenty of ladder tutorials on the net.
 

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