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Data Tables and "the SCAN"

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Regarding the Data table function blocks ........

Will the function block always process in one scan?

Are there instances where a Data Table function may take take several scans to complete (such as some of the screen loading features and the like).

If I use the "interval" function across a DT function block, is it giving me an accurate account of exactly how long it is taking to process?

Is there any portion of the process that gets handled in the overhead time between program scans?

More to the point, can I rely on the fact that one that network has completed, that I can be certain that the values of the DT operation of the previous network was completed in its entirety and that it is dafe to use the data as if it were so?

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