Overview
Data Groups are used to fetch data from the source defined in a Connector and place it in a report. The configuration of a group does not require any knowledge of how information is organized in the Connector.
A History Data Group is interface to a Historical Server, such as a historian or OPC-HDA server, to extract raw or summary values over a time period. Where possible, they take advantage of the calculations supported by the server however, they can also perform a wide variety of advanced calculations using the raw data from server.
Configuring a History Group does not require any knowledge of how information is organized in the historical server. Instead, the connection to the server simply requires the selection of items, the type of calculation and the time period.
Before a group can be configured, a connector to the Historical Server is required.