PctGood (Tag-based PE function)

Find the percentage, over a given time range, when a point's archived values are good. The PctGood function finds the percentage of values returned by the expression that do not contain an error code from the System digital state set. For more information about, see System digital state set.

Syntax

PctGood(tagname, starttime, endtime)

Arguments

tagname

A tagname.

starttime

Must be a time expression, the beginning of the time range to search.

endtime

Must be a time expression, greater than starttime; the end of the time range to search.

Returns

An integer or real number from 0.0 to 100.0: the percentage of the given time when the point had good values.

Example

PctGood('tag1', 'y', '*')

PctGood('tag1', '-1h', '*')