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Supported Attributes

The following table provides a list of the attributes supported by the OPC Classic HDA collector.


Historian Property Type	OPC Classic HDA collector Attributes	Data Type	Description
Data Type	OPCHDA_ DATA_TYPE	Int16	The data type for the item. For information, refer to Supported Data Types.
TagDescription	OPCHDA_ DESCRIPTION	String	The description of the item.
Engineering Units	OPCHDA_ ENG_UNITS	String	The units for the item (for example, kg/sec).
Archiving	OPCHDA_ ARCHIVING	Boolean	Indicates whether Historian stores data for this item. The following values are valid: 0: Indicates that data for this item is not stored. 1: Indicates that data for this item is stored.
ItemID	OPCHDA_ ITEMID	String	The Historian tag name. This is used to allow filtering in `CreateBrowsemethod`.