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Modicon M340 Resume Operation Status After Power Outage

 
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ry_fern
Junior
Junior


Joined: 30 Apr 2012
Posts: 1
PostPosted: 02/05/2013 14:22    Post subject: Modicon M340 Resume Operation Status After Power Outage Reply with quote
Good day!

I would like to seek tips on how to meet my requirement below.

I am currently developing a user program for a Soda company using Modicon M340.

The requirement I must satisfy is that whenever a power outage occurs, the process shall return to the step where it was interrupted once power is restored. I am currently looking at M340's System Bits %S1 (Warm Restart) , %S12 (PLC Running) , %S13 (First Cycle After Switching to Run) and %S21 (First Cycle Task) but still confused on how to implement them to meet such requirement.

Can anyone help me with this one? Thank you very much.
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