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looking for a last valid data point expression

Question asked by Cannon on Feb 1, 2019
Latest reply on Feb 2, 2019 by LalBabuShaik

I have a set of three tags that will show a lot number or a batch number or a customer name, then in between batches the tags show no data. I'm looking for an expression to accurately show the current batch/lot/customer and then one that shows the last batch/lot/customer. The closet I have gotten is to show the max value in a given time interval, but the intervals are irregular so the current and last info will have "NO DATA" as the value.

 

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