HDA Items

The HDA Items category provides status information for each trace that is shown on a Historic Trend.

The status information for each trace is categorized as:

• Id—The identity number that has been allocated to the trace by the Geo SCADA Expert software.
• Client—The number of the client handle that is allocated by the Geo SCADA Expert software.
• Name—The full name of the item from which the historic data originates.
• Aggregate—The name of the database aggregate that generates the historic values. For example, the aggregate could be:
  • Historic—The database aggregate that generates the historic data for points and accumulators.
  • History—The database aggregate that generates the historic data for time profiles.
  • Forecasts—The database aggregate that generates the historic data for Forecasts.

  Alternatively, the entry could be an aggregate created specifically for a driver, such as High2ProfileHistoric (which is an aggregate for the SCADAPack E analog points high limit 2 profile).

You can use the HDA Items status information when investigating abnormal Trend updates.