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Bring Data in RtReports from an OPC Tag depending on the state of another OPC Tag

Question asked by zgallisa on Feb 15, 2018
Latest reply on Feb 19, 2018 by zgallisa



I have two OPC tags, one giving me the steps on a process and another giving me the pH values.  The thing is that I need to bring the maximum value of the pH only when the step tag reads 14 (step 14). I don't need all the other registered pH values.


I there any way to do this? How can I tell the system in RtReports that I only need that specific period of data? Is there a way to use something similar to the "while" instruction in other languages or tell the system I need the max pH "during" a certain stage in that other tag?


I know both tags will have different time stamps, but is there any way to relate them?


I'll appreciate any help with this.