WinAC (Windows Automation Center) is a product line from Siemens AG and is designed as an integrated solution for control functions, HMI, networking and data processing. WinAC is able to use a standard PC as a hardware platform to run all of its functions. One of the modules is WinLC (Windows Logic Controller) which turns the PC into a SoftPLC. Since the release of the open development kit (WinAC RTX ODK), it is possible to extend WinAC with custom functions?s. It is also possible to directly interact with the WinLC program scan cycle. This functions was used to integrate Hilscher?s netX-based communication interfaces (CIFX) into the WinAC RTX system.