Summary
This block should always be used as the first block when dealing with Niagara histories. Its goal is to uniform a group of histories.
Implementation
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Drag and drop the block from the btibDataflow palette
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Link the "execute" action from the "executed" topic of the previous block
Properties
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Artifacts: Artifacts created by this block
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histories: list of histories used then by the other blocks
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Delta: Define whether the difference between two consecutive values should be calculated instead of the raw values
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Auto: it will look per history to the boolean slot called "delta" and will calculate the delta if the value is set to true
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False: it will not calculate the delta to any histories
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True: it will calculate the delta to every history
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