DAQmx configuration

Hello,
please clarify following points.
1) How to acquire multiple analog input channels data simultenously in DAQmx configuration?
2) How to set minimum and maximum input limits of individual channels when it is configired as multiple DAQmx physical channels mode(ex. md1 ch0:5,say).
3) If i configure SCXI-1125 module in traditional NI DAQmode, it options like filter and gain settings are available. whereas if the same module configured in DAQmx mode, filter and gain options are not there. How to set these options in case of DAQmx mode?
Look forward for ur valuable reply.
regards.
chanduu

#1 & 2) Add channels to the Task, either in MAX when you set up a Task, or programmatically. Each channel can have a different min and max.
3) Set the filters and whatnot on you module in DAQmx with Property Nodes, as shown in the attached pic.
Richard
Attachments:
filt.jpg ‏21 KB

Similar Messages

Cannot build Installer with NI-DAQmx Configuration Support 9.6.1

Running labview 2011 SP1 f2
All SW/Device Drivers are up to date. error code -21, see attached for more details.
Things tried:
Updated just about all NI software
repaired Labview, device drivers, OPC and DSC as individuals.
Running out of options, its something specific to my machiene, other developers can build this given the same setup.
Ideas?
Certified LabVIEW Architect
Attachments:
NI Build Error.docx ‏79 KB

-          The following are possible reasons and solutions for this error:
#1. Installer specifications file is corrupted. For example, an old version of an installer specifications file could have been copied into the project.
-Go to Tools>>Advanced>>Mass Compile and mass compile the directory where the error is located. Mass compiling is necessary for VI compatibility with a particular version of LabVIEW. If this does not work then delete the saved installer settings from the project window and create a new one with the same settings.
#2. Additional installer components have been overwritten
-Referring to the knowledge base Why do I get a Missing Distribution Error when trying to build an installer from LV 8.0, an installer build always refers to the original installer source. For example, if you are using the NI-DAQmx driver (with additional component MAX 4.0) and later install Measurement Studio (With additional component MAX 4.1) this will cause an error because the installer is still referring to MAX 4.0. Point the installer to the original content on the driver-cd or the hard drive.
#3. Installing drivers before you installed LabVIEW or Updating your drivers
-The same driver and LabVIEW version, which the VI was written in, must be used to build a functioning installer. If an upgrade has occurred then make sure to include updated versions of the run time engine and driver. The driver and LabVIEW versions can be upgraded , in which case you can include the updated version of the driver and run time engine when you try to include additional installers. Make sure that the driver is properly installed for the specified version of LabVIEW in order to upgrade code for new drivers and software. Make a back up of your current project for reference. Open the project in the specified version of LabVIEW and go to Tools>>Advanced>>Mass Compile and mass compile your code

RTD Configuration

I am designing a system that reads and logs measurements from 3 RTDs. I am using the NI 9217 RTD to acquire the temperature readings and have been able to display the temperature readings in LabVIEW. However, the temperature readings are not correct. I know this has to do with the setup of the RTDs. However, I am not sure if I need to select PT3750 or the other preset types or use the custom. The RTD model we are using is from Omega.com and is part # PR-10-2-100-1/4-12-E. I have tried to find the A,B, and C coefficients from Omega.com, but all I can find is an alpha value of .00385. How should I set up the RTD input for this model number?

Hello,
I am unsure of the information you were seeking from the link in the earlier post, but here is what I found based upon the original question posed.
Creating Virtual Channels for RTDs in NI-DAQmx and Traditional NI-DAQ
http://digital.ni.com/public.nsf/allkb/225FA4989E95B4CB86256D520070713C?OpenDocument
Temperature Measurement with a Thermocouple or RTD
http://zone.ni.com/devzone/cda/tut/p/id/4252#toc4
Taking Temperature Measurements with RTDs: How-To Guide
http://zone.ni.com/devzone/cda/tut/p/id/7115
Hope this helps,
Patricia B.
National Instruments
Applications Engineer

Need a recommendation on a DAQ to finish this configuration

I am currently putting together a setup that includes the following items:
             1: Motor Driver - Aries AR-01xx from Parker
             2: NI UMI -7774
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I am pretty new with motion control and I am trying to see if there is a DAQ/setup out there for a PC that would allow me to interface with items 1-3. I was thinking a NI PCI-7342 might work since I only intend to use 2-axis and it also comes with NI Motion Control.  Or is there a better setup that I should use to interface to the motor driver? I already know that items 1 and 3 work together I just need to be able to interface LabVIEW 8.6 to the motor driver?
Any help would be greatly appreciated.
Thanks,
Ginzu

Ginzu,
I don't expect every user being an expert in the NI acronym jungle , but I just wanted to make it clear, that there is a significant difference between these two product lines. Sometimes there are some misunderstandings (Q: "How can I program my 73xx board with NI-DAQmx?" A: "You can't. You need to use NI-Motion" ) and I wanted to avoid this siutation.
Jochen
Message Edited by Jochen on 09-18-2008 03:37 PM

T42 Restore factory configuration impossible - but recovery part exist

Hello,
I have a T42 (IBM bought in my business school)
When I bought it the PC had 4 part in the Hard Drive
2 part visible
- C: SYSTEM
- E: USER DATA
1 part hidden
- IBM_Service W: (the recovery part) - all the program and a 2 drive partition C and D or E
+ BIOS
To be able to restore the factory configuation I had in the menu to start Windows Two choices
- Start Windows normally
- Restore factory configuration
Due to a problem on the laptop I had to restore the factory configuration 2 or 3 times in the last two yearss. It worked well two times.
But Last time the Laptop did not recognize after the restoration the E: DRIVE. It was on the computer but with no name and no possibility to access it.
I uses TESTDISK to regive a name E to this part and be able to use it and restore the data in it but during the process the Recovery part (Drive W which was hidden appeared on the System list
On the same time the choice "Restore factory configuration " on the list of the start of Windows disappear. I use my friend computer to put back on the list the name of the choice but this link can't restore the Factory configuration because it is no longer configurate for it.
Is there a possibility to boot the PC on the Recovery part in order to restore the factory configuration?
does this manipulation will keep my 2 drive configuration C: + USER DATA drive (E with all the data saved in it? That works the first two times
Thanks in advance for your help
This will help me very much
Thieum
Sorry for the english I did my best

Thumper wrote:
I also have a T42, but it’s a different model. I once tried my disks
on a T41 that I was trying to revive, and they didn’t work...
and was later told by IBM that each machine has unique disks.
Whoever told you this was mistaken. With the exception of hardware changes (eg modem from T41 to T42) the disks within a series should work just fine (I've just recovered aT41 with my T42 CDs). The only difference in using early T42 recovery with a later T42 is the fingerprint reader. Later T42 disks should work just fine with an early T42. Go ahead and use your T42 disks on her machine.
Keith
Formerly 600E 2645, T30 2366, X31 2673, T40 2373, T41 2379, T42 2373, T42 2379, T60 1952, T61p 8889, T61p 8891
Currently T420 4177-CTO, T430 2347-A54, T430 2349-L64, T430 2347-UN9, T430 2342-CTR, Ideapad K1, H520S 2561-1LU

Error 2 NI configuration manager

Hi all:
I am trying to start the NI configuration manager via the services section of the control panel. I need to do this in order to start the NI Device loader, which should start my NI myDAQ, which hasn't been starting up, and I think I've traced the problem back to the configuration manager. Whenever I try to start the configuration manager, I receive an error message stating that "Error 2: File not found". Does anyone have any ideas as to how I can figure out what files I need to have in order to start this up?

Hi,
What versions of MAX and DAQmx you have installed? You may be able to fix this by upgrading your drivers, or by repairing your MAX installation: http://digital.ni.com/public.nsf/allkb/FE6B641E86E55AF2862576DE00038001
Trevor B.
PSE
National Instruments

Configuration entrée microphone en pseudodifférentiel

Bonjour à tous !
En ce moment je travaille sur une carte NI9234 (51200Hz) avec des microphones, et j'ai vu qu'automatiquemement sous MAX les entrées microphones se mettaient en pseudodifférentiel, sans pouvoir y changer.
Alors j'aimerais savoir qu'est-ce que le mode pseudodifférentiel et pourquoi il s'applique à cette carte et/ou les microphones.
j'ai chercher sur NI : http://www.ni.com/white-paper/6962/en et dans les aides LabVIEW, je suis tombé sur ceci :
"Système de mesure pseudodifférentiel
Un système de mesure pseudodifférentiel associe certaines caractéristiques d'une voie d'entrée différentielle et d'une voie d'entrée RSE (asymétrique référencée). Tout comme une voie d'entrée différentielle, un système de mesure pseudodifférentiel expose à la fois les côtés positifs et négatifs de la voie. Connectez les entrées positives et négatives à leurs sorties respectives dans le dispositif testé. L'entrée négative est liée à la masse du système par le biais d'une impédance relativement basse (désignée par Z1 dans le diagramme ci-dessous). L'impédance entre l'entrée négative et la masse peut inclure à la fois des composants résistifs et capacitifs. Les côtés positifs et négatifs de la voie d'entrée sont séparés par une impédance plus haute (désignée par Zin).
Les configurations d'entrées pseudodifférentielles sont courantes dans l'échantillonnage simultané et l'acquisition de signaux dynamiques (DSA) qui n'utilisent pas d'architecture de signaux multiplexée. Un système pseudodifférentiel est particulièrement adapté pour mesurer la sortie de périphériques isolés ou flottants en cours de test comme les instruments fonctionnant avec des piles ou la plupart des accéléromètres. La configuration pseudodifférentielle peut aussi être utilisée pour mesurer des signaux référencés si le potentiel de référence du signal ne diffère pas considérablement du potentiel de la masse du périphérique de mesure. Toutefois, les boucles de mise à la masse posent problème si le potentiel de la partie négative du signal diffère considérablement de la masse du châssis. En général, une entrée différentielle offre un meilleur rapport de réjection en mode commun (CMRR) qu'une entrée pseudodifférentielle."
... mais perso j'y comprend rien...
Quelqu'un pourrait m'expliquer ça plus clairement ?
Merci, cordialement
Geoffrey, LabVIEW Associate Developer

Je ne comprends pas trop quel est ton problème... est ce que tu arrives à faire les mesures que tu souhaites ou pas?
Lire les docs c'est bien, mais il faut aussi faire des essais... je te propose de regarder l'exemple : C:\Program Files\National Instruments\LabVIEW 2010\examples\DAQmx\Analog In\Measure Sound Pressure.llb\Cont Acq Snd Pressure Samples-Int Clk.vi
Rien ne t'empèche de tester différents mode pour voir ce que tu obtiens.
Hope this helps
When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"

6601 configuration instruction with LabView

I have a 6601 card.
I would like to use it both for encoder readings as well as events up/down counre.
I am quit confused regarding how to configure the 6601 with the LabView.
Can anyone give me link to a general instruction of how to configure the 6601 using the LabView 7.0
Thanks

Greetings Amnon-g,
There are actually example programs online and programs that ship with LabVIEW 7.0 that show you how to configure a counter on a NI 6601 for encoder measurements and event counting. The NI 660x devices are not yet supported by NI-DAQmx but you can still use Traditional NI-DAQ to program the 6601.
If you search for examples in LabVIEW and go to Hardware Input and Output>>Traditional DAQ>>Counters>>NI-TIO you will find all of the examples that will work with the NI 6601 device. For example, the 'Count Edges (NI-TIO) VI' shows you how to configure a counter on the 6601 to count digital edges.
The example program linked below shows how to configure a counter on the NI 6601 to take encoder measurements.
NI-TIO: Measuring the Position of an
Encoder
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3EDFD56A4E034080020E74861&p_node=DZ52329
I hope this helps. Let me know if you have any additional questions.
Regards,
Todd D.
NI Applications Engineer

Install / Configuration usb-6218 for vb6 ?

Hello,
I'm trying to execute an example about DAQ. I want to reveive data but I can not select the device. I have read its necessary intalling and configuring the device but I think this is yet realized because this device appear in MAX and operate correctly.
I attach a picture about the error.
Thank you
antonioSotelo
Attachments:
ImagenPantalla.JPG ‏40 KB

Hello,
I installed Visual Studio 6.0 and service pack 6 (not more service pack). Then, I installed NI-DAQmx 8.6 but it doesn`t work. Do you have any tutorial to help me?
I have been trying to execute the samples but the device usb6218 is not detected..
Thank you for all.
Mensaje editado por antonioSotelo
Mensaje editado por antonioSotelo
antonioSotelo

The "write key" configuration file vi use of "trim string" prior to writing the data can modify any string data written.

I tried to use the config VIs to record some front-panel settings for later restoration, one of which could be a single space character (part of a string parsing system).
I soon discovered that whenever I tried to save that single-space value to an INI file, only a null string was saved.
After doing some digging I discovered that buried in the Write Key vi is a worker vi called Config Data Modify that uses Trim String on the string data before it is written to the file and that's what was eating my string character. I don't know whether this is a bug or a feature but there are at least three ways to fix it.
1) Assuming you want to leave the library VIs alone, you can pre-process any stings sent to "write key" to replace all spaces with "\20" and then post-process all strings read using "read key" to replace all instances of \20 with spaces.
and if you don't mind modifying the library VIs, either to save/use under a different name or to stick back into the library in a modified state (caution - can cause problems when you move code to another machine with an un-modified library) then...
2) You can yank the trim-string out of the Config Data Modify vi and hope that it does not have any undesirable side effects with regards to the other routines that use Config Data Modify (so far I have not found any in my limited testing)
or
3) You can modify the string pre-processing vi, Remove Unprintable Chars, to add the space character to the list of characters that get swapped out automatically.
Note that both option #1 (as suggested above) and option #3 will produce an INI file data entry that looks like key="\20Hello\20World\20" while option #2 produces an entry that looks like key=" Hello World "
The attached PDF contains screenshots of all this.
Attachments:
Binder1.pdf ‏2507 KB

Hi Warren,
there's a 4th option:
Simply set the "write raw string" input of the write key function to TRUE
This option only appears when a string is wired to that function!
Just re-checked:
I think it's a limitation of the config file format. It's text based and (leading) spaces in the value are "overseen" as whitespaces. So your next option would be to use quotes around your string with spaces...
Message Edited by GerdW on 05-02-2009 08:32 PM
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

"Display cannot switch to secondary landscape with this configuration" Error on x201 T

Hi, I've just bought x201 for 2 weeks. Today I tried to rotate the screen in tablet mode so I can get the battery with my hand when I read documents but after rotation and after just 1-2 second it automatically get back to primary landsacpe view and gives me this error. I wonder what is the problem and more importantly what is the solution?
thanks

More info: I turned off auto-login, and was able to log in to my test account. Then, I was able to use fast user switching to switch to my main account. I will try again restarting into my main account and see if I can switch to Test. This failed consistently before I posted here. Perhaps the "sense Mac guru" circuit kicked in and cured the problem. I'm about ready to turn in so won't post a follow-up until tomorrow. Right now, I need to use my two accounts to get the job done (a writing job with screen shots of a new unaltered account). Then, I'll go back to trying to see if the problem still exists when I log in to the main account first.

How to open a configuration file with a relative path?

I want to open a configuration file during the initialization of my application (first "state," u can say) and I am using "Open Config file.vi" and tried to pass the config file's path as "data\myconfig.ini" and the "File exists?" vi didn't give any error (simply, the output was "false") but the Open config File gave an error.
If I pass an absolute path "D:\xyz\xyz\myconfig.ini" it works fine. Isn't it allowed to use "relative path" as I remember using it before for other tasks?
I actually prefer to have this file in the "data" folder that my application's setup will create in the destination directory while installing the application, because it will be easy when I want to ask the user to open and edit it. Or, I would just put it in "C:\" which exists on all the windows computers, but then it would be too much open.
Thanks ahead!
Vaibhav
Solved!
Go to Solution.

Relative paths have sometimes a meaning for command line tools (where a relative path gets appended to the current path, which usually is the executables directory).
But for Windows GUI applications that makes not much sense. Windows also maintains a per process current path, but that path gets updated by several Windows APIs, one of them being the File Dialog. So whatever your user has last selected in any file dialog inside your application will from then on be the applciations current path. It should be clear that with such a braindamaged current path implementation it has basically no useful meaning, and LabVIEW consequently does not do path expansion, where relative paths are expanded by prepending them with the applications current path.
Also LabVIEW uses mostly the Windows 32 Bit API, which does provide the current path implementation but does almost not use it in any of its file operations. The use of that feature is mostly reserved for the Windows shell API, which is a higher level API that can as best be described as a collection of various APIs that have been thrown together by whatever some MS developer felt at the moment. You can not by any means call it a designed API at all, and LabVIEW makes almost no use of it, as it needs lower level access, to make its operation similar in its working across all the platforms, LabVIEW can run on.
So while you can work with relative paths inside your application (and actually should as much as possible to make your application not depend on a particular location) you should make that path absolute whenever you pass it to a function that actually accesses a file somewhere.
Rolf Kalbermatter
Message Edited by rolfk on 09-08-2009 11:31 PM
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How can I print out the objects with the configuration and connections? I want to document my programming (configuration) on paper.

Solved!
Go to Solution.

The datamember configurations can be exported. In edit mode, File->Export Process Data Members...
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You can open the .lks file by notepad, there you will see the source codes, including the connections you configure. But you need to extract them manually.
Ryan Shi
National Instruments

1505n printer wired to network will not print configuration for IP address

I have a HP 1505n printer that will not the configuration page so that I can get the IP address to set it up. I know it's not the cat5e cable because I've tested it by plugging my laptop to and it works fine. The operating system is Windows 2008r2. I currently have 2 other 1505n printers which work great using a HP universal driver. Cat5e cable unplugged it will print and UBS cable connected to a PC it will print a usb config page. I followed HP's advice on resetting the printer but get the same results. Any suggestions?

Hi Marcel17,
I am sorry, but to get your issue more exposure I would suggest posting it in the commercial forums since this is a commercial product. You can do this by clicking the following link: Printers - LaserJet.
Hope this helps, have a good one!
Please click “Accept as Solution ” if you feel my post resolved your issue, as it will help others find the solution faster
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
**MissTeriLynn**
I work on behalf of HP

App not supported by your device's current configuration

Hi, If I try install some apps from Appworld (especially the converted android apps) I get a message that it is not supported by my device configuration. Is this a regional issue in that only people in specific countries can access the apps? Cheers

aandras wrote:
Do you have a specific app that you got this with. This way it can be tested.
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DAQmx configurat​ion

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