Problem with NI cDAQ-9172

[Billy12345]

Hello,

I have 3 problems with my program. So NI cDAQ-9172 isnt supported anymore by DAQmx. In order to solve this problem I need to create a virtual channel? How do I do this? Also problem 1 & 2 is stating that the physical channels dont exist even though they do and are powered on and connected.

[ZachHindes]

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So NI cDAQ-9172 isnt supported anymore by DAQmx.

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Correct, NI-DAQmx 17.5 is the last version of DAQmx that support the 9172.

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@Billy12345In order to solve this problem I need to create a virtual channel? How do I do this?

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The only way to solve this problem is to install a version of NI-DAQmx that supports the 9172. You may need to uninstall the existing version first.

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@Billy12345Also problem 1 & 2 is stating that the physical channels dont exist even though they do and are powered on and connected.

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The API itself can't find the physical channel because it isn't supported. The real issue, as you've found, is that the device isn't supported as Self-Test in MAX indicated.

[Billy12345]

How do I uninstall the existing one then? My ultimate goal is to be able to create a ground motion for a shake table that is able to repeat that same motion no matter how much mass is on it. How would I go about doing this? I know that a PID is involved in this?

[Billy12345]

This ground motion is from the Earthquake engineering research institute 2018 competition. https://slc.eeri.org/2018-seismic-design-competition/

[Billy12345]

Ok I figured out how to uninstall the existing and install the legacy driver that I need. Problem 1 & 2 still persists even with the legacy driver installed.

[TimothyDug]

Hi Billy12345,

What version of DAQmx did you install? DAQmx 17.5? And what module is in slot 1 of your cDAQ 9172's chassis?

17.5 should be fine. And if the module has the corresponding AO and AI (or acceleration) then we may have  a damage problem. Let me know!

Thanks!

[Billy12345]

Yes it is DAQmx 17.5. Yes I do have something in module slot 1 and 2. refer to the pictures

[Billy12345]

Forgot to add this picture to prove that I have the DAQmx 17.5 installed

[bstreiff · Accepted solution]

You appear to have named your chassis "cDAQ2Mod1", which means that your AI module (9234) is "cDAQ2Mod1Mod1" and your AO module (9263) is "cDAQ2Mod1Mod2". (On insertion, a cDAQ module is given a name of chassis + "Mod" + slotnumber.)

You are also creating an AO Voltage virtual channel with the string "cDAQ2Mod1/ai0". Analog output channels are named "aoN". Given your setup, "cDAQ2Mod1Mod2/ao0" would be the correct channel string.

[Billy12345]

Ok I renamed  cDAQ2Mod1/ai0 to cDAQ2Mod1Mod2/ao0 now. The error code in pic problem 1 appears when I run the program still. But the other error doesnt appear anymore