Finding NI cDAQ-9172 chassis

Hello,
I cannot find the NI cDAQ-9172 chassis in measurement and automation..Right now just specified as unidentified. Could anyone help me with this?

Hi lakersrl,
For reassociating a device with DAQmx from Traditional DAQ, read this article here. I would try this first before reading forward.
The cDAQ chassis uses USB to communicate to your PC, so as soon as you plug in the USB cable and have your PC powered on, it will automatically identify the chassis and detect the modules, and display them in MAX. USB is hot swappable, so whether you plug it in with the PC powered down or on, you should see the hardware come up automatically. When you plug in the device, the Add New Hardware Wizard should show up and start associating drivers with their respective devices.
The picture you see is from previous versions of DAQmx. Before v9.0, we had a separate folder listing that housed DAQmx Devices under Devices and Interfaces. Post-9.0, we took that folder away, and now all devices show up under Devices and Interfaces.
When you plug in your hardware, can you see anything show up in your Device Manager on your computer? Any unknown devices or National Instruments devices? If you do see some listing, it would be a system software issue and I would look at trying to repair DAQmx or reinstalling to get the hardware identified correctly in the OS. If you cannot see any listings of the hardware in Device Manager, there is some issue with the hardware, and I would try different USB ports, try getting it to work on a different PC, check the USB cable and connections, make sure the cDAQ chassis is powered on and that connection is good.
If you still cannot get this chassis to identify, has it ever been identified and working on any other system or time? It could possibly be damaged, and may need repair for it to work properly. Testing on a different PC with DAQmx installed would be a helpful troubleshooting step to see if the issue is system specific or hardware specific.
Kyle A.
National Instruments
High Speed Digital I/O Product Support Engineer - R&D

Similar Messages

Will cRIO-9215 modules work in a cDAQ-9172 chassis ?

We have some cRIO-9215 and cRIO-9211 modules that I would like to use in a new system I am building that uses a cDAQ-9172 USB chassis/
Will the cRIO-nnnn modules work in a cDAQ-9172 chassis ???
Thanks !
Paul

Hi Paul,
Most of these modules are compatible with both cDAQ as well as cRIO. Please look at this knowledgebase
for modules supported by the cDAQ 9172 chassis. All of the C series
modules in tis list are also supported by compactRIO. Both 9215 and
92111 are in the list. hope that answers your question.
Ipshita C.
National Instruments
Applications Engineer

CDAQ-9172 Calibration Procedure

Is there an official calibration/verification procedure available for the cDAQ-9172 chassis? I haven't been able to find one on the NI website.
Specifically, I want to verify the accuracy of the timing functions provided by the USB-STC2 timing engine in the chassis.
Thanks in advance,
Mark Moss
Electrical Validation Engineer
GHSP

Hello Mark,
Unfortunately, there is no calibration procedure for the cDAQ-9172 chassis. In fact, National Instruments offers no calibration services for the cDAQ-9172 chassis. I'm just guessing here, but I think that the reason is because the only thing that is really in the chassis are analog input and output timing engines, and signal routing lines. I can tell you that the analog input and output timing functions are specified at 50 parts per million of the sampling rate. The base clocks for the counters/timers are also spec'd at 50 ppm. If you want to check to see how accurate the clocks are, you would need to have an oscilloscope and a clock signal of known accuracy, and you would have to route the timing signal to a PFI line or other signal line that was accessible externally. You would then have to trigger the clock signal of known accuracy and the cDAQ-9172 timing signal at the same time, and measure the difference. For more information on calibration of National Instruments products, I recommend that you view the Calibration FAQs on the NI website.
Best wishes,
Wallace F.
National Instruments
Applications Engineer

Sample rate for digital sampling (cDAQ-9172 & NI 9401)

Hi!
I have a cDAQ-9172 with a NI 9401 C-series module (digital). I would like to sample the digital inputs with a sample rate of e.g. 400 kHz or 200 kHz. My problem is that I can only select a the 100kHzTimebase clock, and therefore only get a 100 kHz sample rate. The 20MHzTimebase clock is too fast, since it gives me a sample rate of 20 MHz). Is it possible to get a user defined sample rate of e.g. 200 kHz, by e.g. dividing down the 20MHzTimebase clock?
Solved!
Go to Solution.

The cDAQ-9172 chassis does not have an internal timing engine for digital input however you can use one of the onboard counters to generate your clock. Set your pulse train generation counter to be one of the internal counters, such as "cDAQ1/_ctr0" and your digital input sample clock source to be /cDAQ1/Ctr0InternalOutput".

NI cDAQ-9172 is not recognizing a NI 9237

I am trying to use a NI 9237 with a NI cDAQ-9172 to measure pressure using a pressure transducer. When I plugged the 9237 into the cDAQ it was not recognized. As I remember with this piece of eqiupment, once a module is plugged in it should be recognized and configured. Any ideas?

Hi Matthew,
I'm wondering, do you have the driver installed? As well, is your chassis recognized in Measurement and Automation Explorer? Does the New Found Hardware issue ever pop up when you connect your device? Thanks!
aNItaB
Applications Engineer
National Instruments
Digital Multimeters

Encoder Speed with NI 9215 module and cDAQ-9172

I've a NI cDAQ-9172 with the NI9215 analog input module, and I want to estimate the speed with an optical encoder (OMRON E6A2-CW3C). My approach was, making a comparison with a point in the midle of the high of the signal, ie 4V, making this way a perfect square signal with 1of high. After that I use the Tone Measurements and the Timing and Transition Measurements modules to calculate the frequency of the wave form, and this way I'm able to calculate the RPM speed.
The problem with this solution, is that even with the engine at a constant speed of 746RPM, measured with a stroboscope, Labview give me a high variable values between 730RPM to 760RPM, and I can't solve this problem because I really need an accurate measurement.
Should I buy for example the NI 9401 module to make this measurement? If so, does any one knows how to build a VI to get the encoder speed?
In attach I send the VI that I'm using to calculate the speed.
Thank you for help.
Attachments:
Encoder Speed.vi ‏112 KB

Hi,
The best way to measure a speed through a quadrature encoder is to use the counters that are inside the cDAQ chassis.
With the 9172 chassis, you need a digital I/O module (9401) in order to access the counters.
With the new generation of chassis (9178), you don't need the 9401 because you can connect your encoder signals to the BNC.
Best regards,
Thomas B. | CLAD
National Instruments France
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9472 Error 50808 with cDAQ-9172

I am using the module NI-9472 (digital output) to switch a din-rail Relay with 24V DC that is switching a 3phase contactor, but am I getting the error 50808 when using this module with the cDAQ-9172 on slot 1.
I have tryed the same application, with the same 9472 module with cDAQ-9171 and everything is working ok. The problem only pressists with the cDAQ-9172 and only when I connect the cables from the 9472 module to the relays. If these cables are disconected, I never get the error, and the module LEDs work just fine.
I am also posting the VI I am using in order to get some help, maybe I should do this in other way.
Thank you for the help.
Attachments:
error.jpg ‏92 KB
Test 2.vi ‏50 KB

Hello,
DAQmx returns these errors after the host PC's USB controller reports a USB transaction error.
To recover from this state, you may use this : Programmatically Reset USB DAQ device in LabVIEW
The underlying issue could come from the host controller, the device, or even the USB cable. Some host controllers are more susceptible than others to encountering these transaction errors. It is recommended to double-check your USB cable and if necessary try the device on a different host controller.
You could try a different USB host controller (PCI USB host controllers cost typically between 20 and 30 dollars).
You'll find all these information in the following document : Why Do I Receive Error -50405 or Error -50808 Using an NI USB DAQ Device When Inserting or Removing ...
FYI, a customer who met the same issue get the 9172 working by using an externally powered USB hub.
Regards
Jérémy C.
National Instruments France
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Travaux Pratiques d'initiation à LabVIEW et à la mesure
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Counter issues with cDAQ-9172 and 9401

I'm trying to do a pulse count with a 9401 module in a cDAQ-9172 system. My problem is that the count always ends up in the 30 kHz range, when it should be in the range of 1 kHz - 5 kHz. Furthermore, the pulse count doesn't change even when the input pulse frequency is changing. I've used a multimeter to verify that the input signal is pulsing at the expected frequency. It seems like the system is counting the wrong thing (maybe defaulting to some sort of internal timing device?), but I can't figure out what it is or how to fix it.
Any advice would be much appreciated.

Thanks for the response. MAX basically confirms what I've been finding.
Some more specifics:
I have two counters set up, only one of which should be getting a signal at a time. When I connect a function generator sending a square wave to one of the counters, that counter reads the correct frequency and the other counter reads zero - exactly what should happen. When I connect the signal I'm trying to measure to an oscilloscope, it shows a square wave with the frequency I'm expecting. However, when I connect the signal to one of the counters, that counter reads the wrong frequency, and the other counter is counting pulses when it shouldn't be receiving anything at all. The only thing I can think of at this point is that somehow my signal is creating some kind of noise that causes incorrect measurements on both counters, but this doesn't make a whole lot of sense to me, as the oscilloscope shows a pretty solid square wave. In fact, the signal doesn't really look appreciably worse than the output of the function generator. Even if there were some noise, it would have to be pretty severe to affect the edge count, I believe.
Essentially, I've been able to convince myself that the incoming signal signal is an acceptable square wave with the expected frequency, and that the DAQ system is capable of counting pulses on a similar square wave when it comes from a function generator. Somehow, when I try to combine the two it doesn't work, so I'm at a loss at this point.

NI cDAQ 9172 with 3 USB 9233 for collecting impact hammer data

Hello,
I am collecting data on a NI cDAQ 9172 with 3 USB 9233 cRIO. The software I am using is Sound and Vibration assistant. I have setup the necessary parameters and trigger. The impact hammer is connected on the USB 9233 module one and the rest of the channels on the first module and remaining two modules are accelerometer channels. Would I have a problem triggering the rest of the channels on module 2 and 3?
I have attached my project file for you to have a look at. Thank you very much for your help.
Attachments:
Xrx-run1_11-19-try1.seproj ‏239 KB

The data acquisition part of the project should have just one step. All the channels should be in the daq step of the project. In this way they are all sampled simultaneously and all channels will be triggered and sampled at the same time. This looks like you have this in your project.
I would consider using the cDAQ chassis as the holder of the 9233 which you have. In your project you have all the 9233's in the cDAQ chassis - this is also good.
Since your DAQ step has all the channels, the trigger applies to all the channels in the DAQ step. consider putting a time series plot on your view so that you can see all the data after the trigger. In other words drag the triggered data from the trigger step out onto a graph.
You can also review the the example which ships with the assistant for impact test. Pull down the help menu, select open example, select sound and vibration assistant, and then select the SVA_Impact Test example project.
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

Strain measurement using 9237 and cDAQ 9172

I am trying to measure strain using a 9237 and cDAQ 9172.
The strain gage is connected to 9945 (Red wire to EX+, White to IN+ and Black to QTR terminal also tried connected the white and black to IN+ terminal).
The 9945 is connected to 9237 quarter bridge strain measurement module on a cDAQ 9172. I have two 9237 on the cDAQ 9172.
The device passes the test in MAX.
The problem is I cannot read the strain value.
Can anyone help me please?
Attachments:
Strain measure.vi ‏19 KB

Hi jujare,
In the VI you attached, you don't have the bridge configuration set up. The default is full bridge I, so if you have a quarter or half bridge wired up, that is one reason you could be getting bad data. I'd suggest you take a look at "Cont Acq Strain Samples(With Calibration)-NI 9237.VI" in the Example Finder. It shows the configuration for bridge type and has some handy wiring diagrams. You could also add controls to your vi to set the bridge configuration if you'd prefer.
If your strain gauge only has three wires, it's probably a half or quarter bridge. A full bridge needs at least four wires.
I hope this helps!
Regards,

NI cDAQ-9172- measuring voltage

This is probably simple to do, but was wondering how to measure the voltage of the NI cDAQ-9172 connected to my labtop?

You need to be more precise on what modules you have in the chassis.
What are your LabVIEW version?
Have you tried some of the examples that is following NI-DAQmx ?

Pulse count with a 9401 modules (cDAQ-9172 system)

I'm trying to do a pulse counting by a 9401 module in a cDAQ-9172 system. I have three 9401 modules . One of them is working as a trigger (start-stop count) and the other two (in slot 5 and 6) are for counting pulses from the 2 meters. It looks like a simple task but my problem is that I am counting always 3 to up to15 pulses less than my reference counter. everything points out to a task in my program is causing a delay. The question is where or what is causing such a wrong counting
Attachments:
COOMET Comparison DN80 short.vi ‏737 KB

First for triggering with cdaq you must use the 9405 or 9406 (for analog triggering or 9401 for digital triggering) module in slot 5 and 6 - look in following link. Signals are routed with the chassis PFI Lines and only available at Slot 5 and 6.
http://digital.ni.com/public.nsf/allkb/851828B06A20E01B862571DA0005591A?OpenDocument
http://digital.ni.com/public.nsf/websearch/EFD808DC883F095186257170005A634D?OpenDocument
Then the other moduls in other slots can be configured with these pins for triggering. When you wants triggering on both edges you can look in following link:
http://forums.ni.com/ni/board/message?board.id=170&message.id=248456&requireLogin=False
Best Regards

CB-68LPR to NI cDAQ 9172

How would I wire from CB-68LPR to NI cDAQ-9172 ?

The CB-68LPR cannot be connected to the cDAQ modules. You will need to connect your signals directly to each module. You can find the pinouts for the module on the module, in the manual, or by right-clicking the device in MAX and selecting "Pinouts".
Otherwise, you will need to pay a third-party company to create a custom cable for you that will go between the terminal block and the modules.
Seth B.
Staff Test Engineer | National Instruments
Certified LabVIEW Developer
Certified TestStand Developer
“Engineers like to solve problems. If there are no problems handily available, they will create their own problems.”- Scott Adams

How do I acquire multiple signals in the NI cDAQ 9172 using 2 analog input modules?

Hi everyone,
Is anyone familiar with using the NI cDAQ 9172? This is my first time using it and I am not sure what exactly I am doing wrong... Alone with a NI 9233 analog input module, it works great. I can grab my 4 signals from each channel and go. However, when I add another analog input module to the mix, it gets an error. It looks like it is reading only one and not the other. It bombs at one of the DAQ start task and read task.
Basically, the block diagram is just a double of the one 9233 working alone. Is there something needed for input to make the 9172 working? Any ideas?
Any help is much appreciated. Thanks!!

Hi Jud,
Both threads are correct. The cDAQ-9172 has a single analog input timing engine, so both of your analog input modules will need to be in a single task. The other VI you referenced shows one analog input task (with channels added from two modules) as well as an analog output task. Analog output has a separate timing engine from analog input, so both of those can run in parallel independent tasks.
The beginning of this thread is a good example; a single DAQmx Create Task followed by a DAQmx Create Virtual Channel for channels from each module. Also, Getting Started with NI-DAQmx will give you the fundamentals for data acquisition, though I don't know how many of their examples use CompactDAQ.
Regards,
Kyle

Physical Connections to use 4 counters with NI 9411 in cDAQ 9178 chassis

Hello,
Currently I have a NI 9411 module in a cDAQ 9178 chassis. I am using 2 of the counters to read frequency measurements.
From the NI 9411 pinout diagram (see pdf file attached to this post), these are the connections I made:
CTR 0 SRC, pin 1 to COM/ground
CTR 0 GATE, pin 2 to first frequency signal
CTR 1 SRC, pin 6 to COM/ground
CTR 1 GATE, pin 7 to second frequency signal
The problem is now I'd like to use the 3rd and 4th counters in my cDAQ 9178 chassis, but I am confused how to wire
in the 3rd and 4th frequency signals, because CTR2 GATE is pin 1 and CTR3 GATE is pin 6. Can I change the pin assignments
to use the other pins in the NI 9411 module for counter frequency measurements? I haven't figured out how to do that in MAX
configuration.
Thanks,
Anna
Solved!
Go to Solution.
Attachments:
NI 9411 pinout.pdf ‏72 KB

Hi EETDer,
The "C Series Signal Connections for Counters" help that you found is a good resource. One thing I want to point out is that for a frequency measurement on a single counter, you only need to wire the signal source to the CTR Gate. Internally, the module will route an appropriate internal timebase to the counters source, therefore you DO NOT want to connect the CTR Source to ground. On your device, you will just wire each signal into the counter source, thereby only utilizting pins 1,6,3,8 for your 4 frequency measurements.
Chris
National Instruments
Applications Engineer

Finding NI cDAQ-9172 chassis

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