Program a GPIB-VXI/C with NI-VISA
You program a GPIB-VXI/C using the same function calls you would use to program any instrument in NI-VISA. You can perform message-based communication using viWrite() and viRead(). You can perform register-based communication using viInX(), viOutX(), viMoveInX(), and viMoveOutX() functions. See also Communicate with message-based devices in NI-VISA or the NI-VXI API and Using NI-VISA.