Before you can access data from an OPC Server, you need to define the data group to which it belongs. A data group is a way to organize data retrieved from the OPC Server into logical selections of related data.
Note: OPC Clients usually allow properties to be set on a per group basis, such as the rate at which the data is collected. therefore consider arranging and naming your groups according to these requirements.
As this procedure is OPC Client-specific, refer to the documentation accompanying your OPC Client.