TagDesc

For an attribute associated with a PI point, retrieve that point's descriptor from the point database.

Syntax

TagDesc(attname)

Arguments

• attname

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

Returns

The point's descriptor

Exceptions

If the PI point does not exist, an error value is returned

Example

• TagDesc('sinusoid')

  [Returns 12 Hour Sine Wave]

• TagDesc('cdt158')

  [Returns Atmospheric Tower OH Vapor]