Sorry, there is no such an evaluation version of NI-FBUS Configurator software so far. But if you want to know something about this software, you can refer to the NI-FBUS Configurator User Manual from "http://digital.ni.com/manuals.nsf/websearch/0E0B20692BCEA4D586256B83005DF7C9?OpenDocument&node=132090_US".
However, evaluation version sounds a good suggestion, NI would consider your request seriously.
Thanks.