This part of IEC 61804 specifies the Electronic Device Description Language (EDDL) technology, which enables the integration of real product details using the tools of the engineering life cycle. This part of IEC 61804 specifies EDDL as a generic language for describing the properties of automation system components. EDDL is capable of describing - device parameters and their dependencies; - device functions, for example, simulation mode, calibration; - graphical representations, for example, menus; - interactions with control devices; - graphical representations: - enhanced user interface, - graphing system; - persistent data store.