DAQ inoperative/unreliable

Using LV 7.0 to address a DAQCard 1200, I'm getting oddball results. First, when LV 7 was installed off the LV 7 CD (Prof Dev Suite-May 2003), there were no DAQ VI's at all. When I copied them from LV 6.1, in a folder in vi.lib called DAQ, they seemed to work, but I had to point the call library function to the correct lvdaq.dll location. Then, when I tried the DAQ assistant, it told me that the DAQ software was not installed correctly (duh) and to install it from the Driver CD. I, apparently, don't have that CD in my collection.
Other weird stuff:
-CPU usage, when DAQ is operating (in traditional mode), is 100%.
-MAX 3.0 sometimes shows DAQmx functionality, sometimes not. What is with that???
-Why was there no DAQ functionality in a Pr
ofessional Development System--a glaring omission.
-the DAQCard 1200 is now considered legacy hardware and NI-DAQ 7.1 will not support it (all 600MB of it), so I can't install it. Is there an upgrade path, exclusive of starting over?
-What good is DAQmx over "traditional" DAQ, other than another arbitrary layer of hardware abstraction?
This has my development stopped dead so the sooner I can resolve this the better.

You raised several legitimate concerns in your message, and I will attempt to explain as many of them as I can.
I would suspect that the problems you were observing were due to the fact that the NI-DAQ driver was not reinstalled after upgrading LabVIEW. The way things are packaged, the driver CD includes the correctly versioned VIs for each supported version of LabVIEW, rather than the other way around. Reinstalling NI-DAQ should resolve the problem.
Many things could have caused CPU usage to be 100%. What were you doing at the time you saw this happening?
MAX may only be showing mx functionality when a DAQmx device is present in the system.
In order to use your PCI-1200, you should uninstall any version of NI-DAQ and obtain and install version 6.9.3. The following instructions best explain how to use your board with LabVIEW versions 7.x:
http://digital.ni.com/public.nsf/websearch/F185E098C7EC5A3486256D2E00691BB2?OpenDocument
The DAQmx API is a replacement for the API now referred to as 'Traditional DAQ'. DAQmx streamlines application development by providing a more intuitive API. Applications written in the Traditional DAQ API can continue to be used directly on hardware supported by the traditional daq driver.

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Hi;
Would you please advise which NI-DAQ software version is for USB-6009 using LabVIEW 7.1?
Regards

Hi;
I have downloaded NI DAQ MX 8.9 which is supports LabVIEW 7.1, but it can not detect the NI USB-6009 driver and still asking for the driver.
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hi
Currently I am using usb 6009 daq board for data acquisition in using simulink. I have created a model with taking analog input from data acquisition toolbox. Then when i want to run in external mode and try to connet to target, the following error is coming up:
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How can I solve this problem? For your info, I am using 32-bit matlab, version: 2012a
For your info, a snapshot of the error is attached,
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Attachments:
Untitled.jpg ‏130 KB

Hi Mahmudur,
what does MathWorks say about this error message?
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I have LabView but I do not have the Calibration and Configuration Palette,and I could not download it, how can I download it or if i cannot,can I work with the NI-DAQ Calibration_1200?

I have read in a tutorial for the board 1200 that I can calibrate it with the Calibration and Configuration Palette in LabVIEW, but I do not have them and I could not download it to access its libraries, so I can only download the NI-DAQ software,What's my best choice and if it is to download the palette with its libraries, how can download it with them?I'd appreciate your answers

If you wish to use your 1200 device in LabVIEW, you must download and install NI-DAQ. When you install NI-DAQ, it will ask you if you would like to install support for LabVIEW. By installing this support, you will then have access to the DAQ pallette in LabVIEW. The DAQ pallette requires that you have NI-DAQ installed.
For more information on installing and using your device, you can refer to the DAQ Quick Start Guide. You can download it from:
http://digital.ni.com/manuals.nsf/14807683e3b2dd8f8625677b006643f0/0eca53fe80911b1f862568560068295d
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When I install Software, written in LabVIEW (build an executable/installer), as administrator it works fine. But when I switch over to a user account with limited rights (we are talking about WinXP) it will not run and gives error messages. It happend to me at two almost the same computers, one with a DAQ-board, and one with an IMAQ-board. (At the computer with IMAQ1411 -> I also checked MAX -> errors/no access.) What to do?
Attachments:
DAQ_example.JPG ‏9 KB
IMAQ_example.JPG ‏15 KB

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Rik Prins, CLD
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How Do I Use Examples for Visual C++with NI-DAQ?

我有一张NI6723的卡，用the Measurement & Automation Explorer测试的时候，一点问题都没有。完全安照前面所说的例子（http://digital.ni.com/public.nsf/allkb/0087C1E20920F7B986256D9B0061DEE2），我用Visual c++建立工程后，编译没有任何错误。但是运行后就会弹出错误：
[AO_VWrite] returned NI-DAQ error-104041
The specified device is not a National Instruments product,the driver does not support the device (for example,the driver was released before the device was supported),or the device has not been cofigured using the Measurement & Automation Explorer.
请问各位，这是怎么回事？

用TRADITIONAL DAQ可能不支持
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Hello,
I'm new here so I apologize if I posted this on the wrong board
This is my "situation":
I need to make a simple PID controller which takes information (process variable) from an outside source (a NI's DAC connected through the USB port ) which is accomplished using NI-DAQ as an input, and the PID's output goes to the second NI-DAQ which is also connected using DAC to an actuator which in my case regulates the air pressure. (VI attached)
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I know this is probably too much to ask, but I'd be grateful for any help
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Attachments:
PID while.vi ‏100 KB

My problem is the following. Both of the NI-DAQ I placed using DAQ Assist, require to be in a while loop.
-If
I place them in separate loops, I have the problem of passing
information between the Input NI-DAQ and the PID, and also between the
PID and the Output NI-DAQ.
This is the best option---Use QUEUE or Functional global or something else to tranfer the data to and fro
How do I make that QUEUE or Functional global?
-If I place them both in one big loop, an error occurs saying that the selected buffer size is too small (Error -200609).
Have
you tried increasing the buffer? Is the acquisition happening
parallelly (means to say the first DAQ not wired (error terminal) to
second DAQ)
Well the buffer is, at least how I understood it, the option Number of Samples when in Continuous Samples mode. Concerning the parallel acquisition, do you mean I should wire the error ports of both of the DAQs?

Record all the data acquired by DAQ

Hi all,
I have a problem when I tried to record all the data acquired by the DAQ card. My DAQ is NI 6259, and the Labview version is 2009.
Basically, what I need do is using multiple channels to get the voltages of different point, then I subtract values of two channel (V+ and V-) to get voltage value between two points. In my vi, the sampling mode is continuous and the rate is 100 KHz, DAQmx reading is inside a while loop, and the numbers of samples per channel is set to be 100. After each loop execution I would get 100 data. I just used the format into file to write the data into a .txt file. It seems after 1 loop only the last one data is recorded instead of 100. Previously I averaged the 100 data inside the acquisition loop to get one data, so the writing function is OK but it really slows down the program. So I want to write all the raw data to txt file so later I can process them in Matlab. Is there any way to achieve this? Thank you very much.
The attached is the my vi for 2 channels voltage measurement and the current source control sub vi. I am new to Labview so the question really bothers me even after I read some similar topics in the forum.
Regards,
Hongxiang
Solved!
Go to Solution.
Attachments:
Dual Channel Voltage Measurement.vi ‏33 KB
Current Source 1.vi ‏49 KB

Thank you for you reply. I tried that, it actually record more data per pulse than before, but less pulses were recorded (there should be 8 pulses in 20 seconds time but only 2 were recorded), I think it was because the for loop inside slows down the program execution, and sometimes the error 200279 occurred. I think it would be better to separate the reading and recording process. Someone suggests me rather than writing to the file inside the loop, accumulate the data from all of the loop iterations to generate one large array containing all of the samples then pass that to Format Into File outside the loop. Do you know how to achieve that? I tried the as below, it seems totally wrong , only two data was written.
(The subvi nameed 1 (see attachment) converts the 2D array to 1D ) Thanks.
Attachments:
2D_Data_Reader.vi ‏9 KB

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OSA example.vi ‏42 KB

Hi Jason,
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Actuator_Gabe_Oct27_Flat_Sequence_XY_+Measurement_File.vi ‏131 KB

Please know that the best option is to review the concepts discussed to further understand programming in LabVIEW. Perhaps you could take a look through ni.com/gettingstarted and ni.com/lv101 to have a look at some of the online help materials. I have included a VI snippet of the while loop containing the changes. Further, the code you attached contains a lot of customer controls and VIs, which are not common to all LabVIEW users. It is a best practice to only attach the code of value to the question/post, and to have the most simplified version of the problem.
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Academic Product Manager
National Intruments

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1.The new software goes thru all the installation steps upto the point where it displays the message that it needs to restart to complete the installation.
2. The system then reboots and displays the message," Completed Updating Window Files"
3. Then I receive an error:
'Rgdaqhce' performed an illegal operation and will shut down.
4. The window closes and brings me back my normal Desktop display. The NI setup window appears and displays" Installing: Please Wait".
5. Then it goes thru the NI-DAQ setup normally, choosing the PCI-6025E and the BNC 2090 doc options.
6. WHen it gets to the point of selecting Documenatation PAth, Error: NI-DAQ SETup
Cannot find installation information for :322153.
At this point I just choose OK.
Then it proceeds where it request the Development path, LAbview 5.1 and then it proceeds to copy all the files and then states "Installation Complete" and are ready to configure MEasurement & Automation Sys.
7. The Measurement & Automation window appears:
DATA NEIGHBORHOOD
DEVICES & INTERFACES
SCALES.. WHen I click on any one of the above I get the following message:
" The configuration file has been updated from a previous system. If you save changes to this file it will be permanently upgraded to the current version." At this point I choose "OK"
8. Then it states.."you must reboot for the changes to take effect. Would you like to reboot? YEs or No!". where the Data Neighborhood folder never opened..
9. If you choose YES, the system reboots. If I open Measurement & Automation and click on Data Neighborhood again, I get the same above message as in #8 above. If I choose No at anytime to reboot, I get the following Error:
" Explorer- Illegal operation and it will shut down"
Then Measurement & Automation shuts down and brings me back to my windows desktop.
SO no matter what happens I can never get into Data Neighborhood, it keeps going into this cycle.
So I removed NI-Daq version 6.7 and re-installed version 6.5.1.
What recommendations may you suggest in upgrading from NI-Daq 6.5.1 to 6.7 on this system? I would like to take advantage of NI-DAQ 6.7 new feature where LAbview for Windows Data Acquisition Library LLBs now contain function calls to a dynamic link library called LVDAQ.DLL, where the benefit of changing the VIs to call DLL functions instead of code interface nodes, CINs, where thet VI load time is dramatically improved.
Any help with this matter would be greatly appreciated.
In the meanwhile I am searching your support page here to see if there are any similiar situation..I have not come across any as of yet.
Thanks for your help and sorry for such a long email.

Hi,
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New project using Daq Assistant or not ?

Hi everybody,
I need to create a software to do some realtime acquisition & analysis.
I trained myself a little bit on c# lessons to get use to this programming language; I’m also discovering Measurement Studio & Visual Studio. (I’ve background in C++).
My software will have 2 modes :
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