Aiming to meet the demands of developing applications that can view and change data from an Elipse E3, Elipse Power, or Elipse Water server, Elipse Software developed a COM object as a library called E3DataAccess. By using the events, methods, and properties provided by this object, any application written in Visual Basic, Delphi, or .NET, among other languages, which supports COM objects can create a communication interface with Elipse E3, Elipse Power, or Elipse Water. An important detail is that each instance of E3DataAccess Library can only be connected to one Elipse E3, Elipse Power, or Elipse Water server at a time.

When instantiating an E3DataAccess object, users can monitor the Server property, which defines the Elipse E3, Elipse Power, or Elipse Water server this instance is connected or trying to connect. After connecting, users have access to synchronous methods to read and write Tags, search data using queries, and receive change events from Links, described on the next topics.