CANopen-based systems are equipped with one or more nodes with Windows-based Graphical User-Interfaces (GUIs). CANopen.NET provides a .NET-database interface via the .NET type dataset to the data in the object dictionary. .NET framework provides the most attractive solutions for design of GUIs both for Windows and Windows CE based nodes. CANopen.NET provides a programming-less interconnection between CANopen-based control applications and Windows.NET-based GUI-applications. This paper from CC explains. .NET technologies that can be used both on full scale display PCs and smaller PDA-style devices within a vehicle.