Access the NI-XNET using a database definition file such as a CAN DB (.candb) or a LIN Description Format (.ldf).
The database to use is specified as part of the setup of the tool, please see the Setup method for more.
Please see the parent NI-XNET toolbox description for information on driver installation and so on.
An example script using the NI-XNET device is available in the Examples menu under File -> Examples -> Tools -> NI-XNET.