In addition to an OPC Client (OPC Driver), Elipse E3 also works as an OPC DA (Data Access) Server 2.0x. This allows Elipse E3 to expose all existing objects in the executing Domain, such as I/O Tags, to applications external to Elipse E3. Some examples are Elipse SCADA, Elipse E3, which can be executing on another application as a Client, or an OPC Client from another manufacturer, as long as this Client implements the OPC DA 2.0x standard or later.