Application Server

Configuring Application Objects to Save Historical Data

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The following table shows the historical attributes for application objects. These history attributes are described in Configuring Common Historical Attributes.

History Attributes	Application Server Application Objects
	AD	Bool	DD	Dbl	FR	Flt	Int	SQ	Str	SW	UDO
Enable Swinging Door	¨	¨		¨	¨	¨	¨
Force Storage Period	¨	¨	¨	¨	¨	¨	¨		¨	¨
Interpolation Type	¨	¨		¨	¨	¨	¨
Rate Deadband	¨	¨		¨	¨	¨	¨
Rollover Value	¨	¨		¨	¨	¨	¨
Trend High	¨	¨		¨	¨	¨	¨
Trend Low	¨	¨		¨	¨	¨	¨
Value Deadband	¨	¨		¨	¨	¨	¨

AD: AnalogDevice

Bool: Boolean

DD: DiscreteDevice

Dbl: Double

FR: FieldReference

Flt: Float

Int: Integer

SQ: Sequencer

Str: String

SW: Switch

UDO: UserDefined

Note: The historical attributes available from the UserDefined object are based on the data type associated with the selected attribute.

To configure an application object to store history

Open the application object in the Object Editor.
- If you selected a UserDefined object, click the Attributes tab.
- If you selected an AnalogDevice object, click the History tab. Then, click the General tab to show the history attributes for the object’s PV value.
Enable historization.
- For UserDefined objects, create an attribute and then activate the History feature. Assign values to the history parameters. For more information about assigning values to the history feature, see Configuring Common Historical Attributes.
- For AnalogDevice objects, select the Historize feature to enable the common history attributes shown in the History area of the page.
  
  The History page includes check boxes to save PV, SP, PV mode, Control mode, and Control Track Flag data to the historian.
  
  Assign values to the PV history attributes that appear in the History area of the page. For more information about assigning values to the common history attributes, see Configuring Common Historical Attributes.
Save your changes and close the Object Editor.