Comsoft announces the DF PROFINET IO PC card. With this it is now possible to operate large networks without any performance restriction. The new board achieves operations of 100 PROFINET per millisecond with a network load of more than 85 % in the performance class RT. The PROFINET IO provides two independent Ethernet interfaces and can therefore operate two PROFINET networks at the same time. As an additional option, the board can be equipped with only one Ethernet interface. The size of the process image of the card's IO data is 32 Kbyte. The board runs as a PCI bus master. Among the cyclic data traffic, all acyclic read/write/diagnosis and alarm functions prescribed by PROFIBUS International are supported. Drivers are available for Windows, Linux and real time operating systems such as LabVIEW-RT. An OPC server and a configuration tool for the easy integration into standard applications are also provided. Furthermore, the board is suitable for the PROFINET protocol extension "Dynamic Frame Packaging" (DFP). The PROFINET DFP driver is currently in the works. The controller board also supports PROFINET supervisor functionality. This means that it is possible to scan the network as well as to control the names and IP addresses of the various PROFINET devices. The card is available in PCI format. PCI Express, CompactPCI and CompactPCI Express are planned for a later release date.