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How can I aquire channel name and temperature of the built-in cold juctioin of a NI 9211 via C functions?

How can I aquire channel name and temperature of the built-in cold juctioin of a NI 9211 via C functions?

‎12-20-2017 05:47 AM

I want to read the temperature of built-in cold junction of NI9211/cDAQ-9171 using C functions. When I use Measurement & Automation Explorer, there are 7 channels listed for the device "cDAQ1Mod1":

cDAQ1Mod1/ai0, cDAQ1Mod1/ai1, cDAQ1Mod1/ai2, cDAQ1Mod1/ai3, cDAQ1Mod1/_cjtemp, cDAQ1Mod1/_aignd_vs_aignd, cDAQ1Mod1/_calref_vs_aignd.

 

However, when I call DAQmxGetDevAIPhysicalChans from my program, only 4 channels are returned:

cDAQ1Mod1/ai0, cDAQ1Mod1/ai1, cDAQ1Mod1/ai2, cDAQ1Mod1/ai3.

 

How can I aquire channel name and temperature of the built-in cold juctioin of a NI 9211 using C functions?

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