There are three main approaches for applying OPC UA FX to existing Information Models.

• Creating a new model based on the OPC UA FX Information Model (see B.2).
• Extending an existing OPC UA Information Model with OPC UA FX (see B.3). This can be accomplished in several manners:
• By a simple mapping
• By using Interfaces (see B.3.2)
• By using AddIns (see B.3.3)
• Defining a parallel OPC UA FX model and linking it to an existing OPC UA Information Model (see B.3.4).

The three approaches can be used in combination, in that the asset model might use the first approach, and a FunctionalEntity might use the second or third approach or any combination.