Field devices-models and their realisations

Device descriptions are necessary for the integration of intelligent field devices in commissioning and maintenance tools, engineering systems or MES/ERP systems. Device Descriptions comprise of device models and presentations based on the models (e.g. ASCII files). The XML concept may help to enlarge the application scope of device description because it is becoming one of the basic technologies of the fast growing Internet and various e-engineering activities. Other realisations have to be based on the same device model (e.g. component interfaces). These issues are addressed from a modelling and implementation/realisation point of view.