Hi BartvStC,
I've attached the pinout for the PXI-2575 front connector when the module is configured in its 1-Wire 196×1 Multiplexer Topology. You can find the same pinout in the NI Switches Help. If you are at all interested in the pinouts when using the LFH200 cable accessories, then you can find them in the LFH200 Cable Installation Instructions.
Let me know if you have further questions!
Chad EricksonSwitch Product Support EngineerNI - USA
2575 Pinout.pdf:
http://forums.ni.com/attachments/ni/320/1315/1/2575 Pinout.pdf