The FieldPoint Ethernet modules use a proprietary communications protocol that is currently only avaialable on Windows based platforms so you can not easily use a FP-1600 with a UNIX machine. However, you could use a FP-2000/2010 and embed a LabVIEW application that uses TCP or UDP according to whatever protocol you wish to implement and have the FP-2000/2010 directly communicate with the UNIX machine through this devised protocol.
Regards,
Aaron
LabVIEW Champion, CLA, CPI