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Old January 29th, 2016, 09:06 AM   #2
rdrast
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Join Date: Apr 2003
Location: South Carolina Lowcountry
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#1: Don't use SE for any logic.
#2: Don't use SE for Any logic.
#3: Don't use SE for ANY logic.

Use SE to generate a simple button press, handle the logic in the PLC, and as soon as the logic has been handled, use the PLC to unlatch the tag for the SE button, as SE won't always release it on its own.
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