NI 6351 USB daq.getDevices does not work

Hello,

I am using the matlab version: 7.12.0.635 (R2011a) and the NI version: ID: 'ni' FullName: 'National Instruments' AdaptorVersion: '2.18 (R2011a)' DriverVersion: '9.3 NI-DAQmx' IsOperational: true

When I try to use session based commands as daq.getDevices, I always get the answer: No data acquisition devices available.

Nevertheless my NI 6351 USB is available and I can use some of the commands from the Matlab DAQ tollbox

Answer 1

[Friedrich]

Hi,

daq.getDevices is part of the session based interface which will work with CompactDAQ Devices only:

http://www.mathworks.com/help/releases/R2011a/toolbox/daq/bskx95j-1.html

[Marc]

Does This mean that my NI 6351 is not a CompactDAQ device? Will this be possible in Matlab 2011b release or not?

[Friedrich]

All supported CompactDAQ devices are listed here:

http://www.mathworks.com/products/daq/supportedio14005.html#USB

So your device is a "normal" supported device, so no CompactDAQ device. I am not 100% sure but think 11b will handle this better.

Answer 2

[Gert-Jan Streefland]

I just started with MATLab, for acquiring and interpretation of multiple signals. DAQ = USB-NI 6351.

First needed to install obvious: NI-daqmx 20.0

Still that did not detect the USB-NI 6351. Solution was first to connect the USB to the computer and next to put the power on the device. Then it started up correctly and all commands work fine ever since, MATLAB 2020.