An apparatus for integrating device objects into a superordinated control unit for field devices in automation technology. A predetermined operating system runs on the control unit, and the control unit communicates via a fieldbus with the field devices. A communication hardware is provided, having a first communication link for connecting to the control unit and a second communication link for connecting to the fieldbus. Associated with the communication hardware is a memory element. The communication hardware is so embodied, that, upon coupling of the communication hardware to the control unit via the first communication link, the frame application is started via the operating system of the control unit and the driver for the communication hardware is installed, so that operating personnel can, via the device objects stored in the memory element and the fieldbus, service the associated field devices.