Interface module and method for configuring and parameterizing a field bus user, wherein to facilitate a configuration and parameterization of a field bus user logical addresses on the side of an engineering system are transformed with a transformation device into virtual addresses, where whether virtual addresses are present in a received virtual configuration file is recognized in an interface module via a recognition device, a signal is triggered when addresses are present in the received virtual configuration file to ensure the virtual configuration file is adopted and stored in a non-volatile manner in a configuration store within the interface module, and where the virtual addresses are transformed in the interface module via a reverse transformation device back into physically present addresses, whereby for a data exchange of the process data of the module slot, on request by further field bus users, the process data in the module slot is addressed.