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Connecting to NI cDAQ 9133 controller

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Eric Freeman
Eric Freeman on 31 May 2016
Answered: Anshuman on 21 Aug 2024
Is it possible to connect to a NI remote system (cDAQ 9133) through MATLAB? getDevices returns no connected devices.

Answers (1)

Anshuman
Anshuman on 21 Aug 2024
The 'getDevices' function in MATLAB typically lists devices connected directly to your computer, so it won't automatically detect remote systems. Here’s how you can connect to a remote NI cDAQ system:
Make sure you have the MATLAB Data Acquisition Toolbox and NI-DAQmx driver installed on your system.
  1. Use the Data Acquisition Toolbox to create a session and specify the vendor as 'ni'. Here's an example:
% Create a session
s = daq.createSession('ni');
2. Use 'addAnalogInputChannel', 'addAnalogOutputChannel', or similar functions to add channels to your session. You will need the device ID, which you can find in NI MAX.
% Example of adding an analog input channel
% Replace 'cDAQ1Mod1' and 'ai0' with your actual device and channel IDs
ch = addAnalogInputChannel(s, 'cDAQ1Mod1', 'ai0', 'Voltage');
% Use startForeground or startBackground to acquire data.
data = s.startForeground();
% inspect the results
disp(data);
Hope this helps!

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