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how to calculate difference between same tag in different times.

Question asked by BThomazini on Nov 23, 2016
Latest reply on Feb 16, 2017 by FirdausHalim

Hi.

 

Does anyone can help me?

 

I need to calculate the difference between one tag and the same tag 1 hour after. Just to see how it changes in the last 1 hour, 1 min, 1 day and so on.

 

I just tried to do it on the PI calc but it doesn't work.

 

Thanks in advance.

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