Hello,
The demo software for NI-FBUS 3.2 is available here:
http://digital.ni.com/softlib.nsf/websearch/F8F368E7A6563319862571E600140826?opendocument&node=132060_US
Please be aware that, before purchase and properly activate the software, NI-FBUS Configurator cannot list and configure the FF devices on the bus. However, the Communications Manager works, so please run NI-FBUS Dialog Utility or use LabVIEW to get the devices information.
Hope it helps and please feel free to let me know if I could do more help for you!