Importing an InTouch data dictionary

You can import an InTouch tag name database, also called the data dictionary, and use it to configure most of the AVEVA Historian. Importing a tag name database eliminates the need to manually configure I/O Server and tag definitions for both the InTouch HMI software and the Historian. Information in the tag name database is automatically mapped to the appropriate tables within the Historian Runtime database as part of the import process.

You can import tag name databases from multiple InTouch nodes, but you can only import one application from each node. Tag name databases from InTouch HMI software 6.0 or later can be imported.

To perform an import, you must have administrative permissions for the Historian Runtime and Holding databases, (for example, be a member of the sysadmin or wwAdministrators roles or be in the Runtime and Holding db_owner roles).

However, to perform a delta import, you must be importing from an InTouch 7.1 or later tagname database. For more information, see Reimport.

After you configure your system by importing I/O Server and tag definitions and then commit the changes, the Historian acquires data for these tags. After the history data is being stored in the Runtime database, it can be manipulated using any SQL method for retrieving data supported by the Historian. Functions specific to the Historian, such as setting the resolution for a query, can be applied to the data, and the data can be retrieved from client applications, including InTouch HMI software.

InTouch user-defined tags are supported in the public namespace. For more information on user-defined tags, see the InTouch HMI Data Management Guide.