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

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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.
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National Instruments
High Speed Digital I/O Product Support Engineer - R&D

Does 9862 module works with Linux RT based chassis ?

Hi,
I'd like to use 9826 High-speed CAN module associated to a compactRIO.
I'd like to know if this module is compatible with newly released LinuxRT based cRIO? (lets' say 9030 for example).
If not, what 4-slots chassis could be advised ?
Thanks !

Well on the product page the 9826 mentioned the following.
In CompactRIO, use in NI cRIO-911x/908x/906x chassis with LabVIEW FPGA installed
Several of those are the newer LinuxRT systems but they are the 8 slot. The newer 9030 isn't listed, but I'd hope that just means the product page hasn't been updated. Someone from NI will need to confirm this.
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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".

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,
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National Instruments
Applications Engineer

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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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

Function Module working only in debug mode

Hi all,
The following Function Module works only in debug mode. The purpose of this FM is to create a notification and to put it in progress status. If I put a breakpoint before "CALL FUNCTION 'BAPI_ALM_NOTIF_PUTINPROGRESS'" it works. If I execute this FM without putting a breakpoint at that place it creates the notification but doesnt put it in progress status.
In other words, the last BAPI call doesnot work if I dont put a breakpoint before.
Can somebody help me to find out where is the problem?
Thanks,
Younes
FUNCTION ZFM_CREATE_NOTIF_IN_PROCESS.
""Local interface:
*" IMPORTING
*"     VALUE(NOTIFTYP) TYPE CHAR2
*"     VALUE(NOTIFHEADER) TYPE BAPI2080_NOTHDRI
*" EXPORTING
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*"     VALUE(NOTIFCURSTATUS) TYPE CHAR40
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EXPORTING
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IMPORTING
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TABLES
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READ TABLE gt_return TRANSPORTING NO FIELDS WITH KEY type = 'E'.
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EXPORTING
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IMPORTING
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TABLES
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CHECK sy-subrc IS NOT INITIAL.
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Hi Emmanuel,
Now I get your problem: you want to wait to have the commit finished! The call to BAPI_TRANSACTION_COMMIT has an optional parameter 'WAIT' which is space by default which causes only a commit. When you set this parameter to 'X' it will do a commit work and wait.
This should solve your problem!
Regards,
John.

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Author:   [email protected]
Date:     2011-03-08 08:23:30 -0800 (Tue, 08 Mar 2011)
Log Message:
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Revision: 20680
Revision: 20680
Author:   [email protected]
Date:     2011-03-08 08:23:30 -0800 (Tue, 08 Mar 2011)
Log Message:
Tomcat 7 Login Module work, due to the Tomcat 7 Security framework change we need to work out the security integration piece for tomcat 7. So far the ValveBase and tomcat Realm had API changes which will impact on the Login integration with Tomcat 7
Modified Paths:
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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

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http://digital.ni.com/public.nsf/allkb/851828B06A20E01B862571DA0005591A?OpenDocument
http://digital.ni.com/public.nsf/websearch/EFD808DC883F095186257170005A634D?OpenDocument
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Will cRIO-9215 modules work in a cDAQ-9172 chassis ?

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