TagSpan

For an attribute associated with a PI point, get a point's span from the point database.

Syntax

TagSpan(attname)

Arguments

• attname

  The name of an attribute with a PI point data reference, enclosed in single quotes

Returns

The point's span. If the point's type is digital, returns an integer whose value is the number of digital state defined for the point.

Example

• TagSpan('sinusoid')

  [Returns 100]

• TagSpan('cdt158')

  [Returns 200]