While use of a PXI-6030E board is easy to configure using LabVIEW RT and the RTOS it uses, we do not offer drivers for our boards for third-party RT operating systems.
If you were to attempt to use this board in the Nucleus RTOS, you would need to first write a driver for it.  You might start at http://stm.lbl.gov/comedi for 3rd party limited-functionality open-source linux drivers for our boards, which might be a good starting point.  Please note that National Instruments offers no support for anything presented on the above web site, or for writing drivers for our boards in general.