This application note is a step by step guide for setting up an easy FDX client application in C# .NET that interfaces to CANoe via FDX. CANoe FDX (Fast Data eXchange) is a UDP-based protocol for simple, fast and real-time exchange of data between CANoe and other systems via an Ethernet connection. This protocol grants other systems both read and write access to CANoe system and environment variables, and bus signals. The other system may be, for example, a HIL system on a test bench or a PC used to display CANoe data.