The LIN wakeup protocol feature that dominates the bus and sends pushes is not supported by the USB-8476 (NI-CAN).
The alternative is using write frame function to wake up the LIN slave device.
You can use ncWriteNet.vi to transmit a single frame.
In IsRemote, enter a value of 17 (LIN header frame) or 18 (LIN full frame). Both frame types are available.
Write one frame as a dummy, then write the actual frame for the second time. The slave nod responds from the second frame.