To my knowledge, it may be "mission impossible".
The following link gives help about how to reset FPoint modules programatically.
When using the "RT Ping Controllers.vi," does the IP address output return the subnet mask and gateway set up on the Fieldpoint as well? If not, is there another function which will return these settings? Ideally I would like the Fieldpoint to read its own information (like using the above VI with the [FALSE][127.0.0.1] address input), as the cFP-2120 is running headless in this application. I have access to the real time library if that is necessary.
RT Ping Controllers.vi does not return subnet mask and gateway info. Text file named ni-rt.ini stored at the root on the cFP contains these TCP settings.