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Old February 8th, 2018, 04:45 AM   #16
Saffa
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New Zealand

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Join Date: Feb 2012
Location: Bay of Plenty
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I've never used these PLCs but have used global data in older Modicons and the relationship with I/O that you've mentioned really does seem bizarre.

Whilst probably not much use to you now, could you "buffer" your outputs via some memory discretes, and then only enable copying those discretes to the actual output addresses when you're ready to roll?

I tend to do this anyway so i can have all my outputs lined up in one routine. I do the same for inputs.
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