Cannot communicat​e to Keithley 2400

I wrote a small Vi for using Keithley 2400 to measure Voltage based on labview 6.2. After 10 month, I found that my program cannot talk to the Keithley 2400. I do not know becasue I upgrade Labview to labview 8.2, or someone deleted some key drivers for GPIB in this public computer. I attached the Vi.   Thanks so much for help.     
Attachments:
volttest2.vi ‏81 KB

See the red border around the whole edge of your block diagram? That's the breakpoint that's sorrounding your entire block diagram. Breakpoints are shown by either big red circles if they're on a wire, or a red border around a VI/function if it's set on a VI/function. In this case you must have accidentally clicked on the block diagram.
Have you taken any of the LabVIEW tutorials? To learn more about LabVIEW it is recommended that you go through the introduction material, tutorial(s), and other material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. You can also take the online courses for free.

Similar Messages

  • Error using the Keithley 2400

    Hi, I am pretty new to LabVIEW and right now I am just trying to set up a simple test (source current, measure voltage) using the Keithley 2400 and Labview 8.2
    I got the driver for this instrument off of NI's website at
    http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=25B255F3AA83660EE0440003BA7CCD...
    In the Measurement and Automator it sees the Keithley (GPIB0::14::INSTR) and I also gave it an alias so it is easier to find amungst the other hardware current set up.
    I wrote a simple program using some of the VIs in the driver to source a current and read a voltage.  When the program runs, it errors out, and then after it errors the keithley still runs the test.  I can see the measurement on the front panel of the instrument however it does not send anything back to the computer.
    I then tried to just run an example found in the driver and I get the exact same error.
    Error -1074000000 occurred at Keithley 24XX.lvlib:Error Query.vi
    Possible reason(s):
    Instrument reports:
    -113,"Undefined header"
    0,"No error"
    Complete call chain:
         Keithley 24XX.lvlib:Error Query.vi
         Keithley 24XX.lvlib:Read (Multiple Points).vi
         Keithley 24XX.lvlib:Read (Single Point).vi
         Keithley 24XX Read Single.vi
    Anyone have any idea's as to what might be causing this error?  Any help would be greatly appreciated
    Nolan

    Hello nblue:
    Can you communicate with the Keithley 2400 in Measurement and Automation? Do you know if there is a query command for the instrument, if so can you test to see if you can query the instrument to make sure it is working.
    Regards,
    Roland A.
    Applications Engineer
    National Instruments
    Check out VI Roadshow

  • Keithley 2400 voltage Issue

    Hello, I am using Labview 2010 to try to control a Keithley 2400 Sourcemeter by GPIB.  I am using the labview drivers from the Keithley 24XX drivers package which I downloaded from the "Find Instrument Drivers" in Labview.  
    I am trying to use the device as a current source to power an electromagnet.  I have the device set up and it will output current, but no matter how high I adjust the compliance value, the voltage output of the sourcemeter will not exceed 2 volts.  
    I'm pretty sure this is not a device limitation because when I adjust the compliance and current manually the device has no trouble.  For some reason when I control the device with labview it just won't go over 2 volts. Any help would be great.
    I have included my program here.  If anyone needs screenshots to diagnose this issue, let me know.   
    Solved!
    Go to Solution.
    Attachments:
    KeTest.vi ‏16 KB

    Yep, the "Compl" light is blinking, so it is the range compliance.  The range compliance is set at 2.1V.  I added the "Configure Measurement" vi and set the vi to Auto, but this didn't change the range compliance. 
    Also, I set the Auto to false and tried adjusting the "Manual Range."  When I get above 2.1 V, I get a message that says :
    Instrument reports:
    824,"Cannot exceed compliance range"
    I have included the latest VI here
    Is there a VI that changes the compliance range, or a VI that sets it to auto?
    Attachments:
    KeTest.vi ‏18 KB

  • Keithley 2400 VISA driver limited resolution

    Hi,
    I have a Keithley 2400 sourcemeter, what I use in the +-1mA range, as a current-source. This is the driving part of a PID control.
    I use the official VISA drivers, and everything is okey, except that, it seems I cannot use the specified resolution from LabView.
    In this low +-1 milliAmp range, the usable resolution is 50 nanoAmperes. In manual mode, everything is ok, I can set for example an output current to be:
    -0.245450 mAmperes.
    But when I use LabView with the Configure Output .vi from the official llvlib package (i attached it) it rounds for microAmps:
    For example the above double value will become: -0.245 mAmperes.
    This is really bad for my project, since I need the 50 nanoAmp resolution for the really fine control.
    Can someone help me?
    Thanks in advance!
    Solved!
    Go to Solution.
    Attachments:
    Configure Output.vi ‏18 KB

    Thanks very much!
    Now I learnt that, I should be always suspicious even with "official" libraries and drivers.
    Actually there are two LabView drivers for Keithley 2400, one from Keithley, it is an exe installer type, and the other from National Instruments. I became curious about this bug, and I checked the Keithley VISA drivers, they are okey, they use everywhere double precision variables. 
    But if you have a look at the NI Keithley 24XX.lvlib:VI Tree.vi, where is the full list for available VIs, there are many problems I think. At many places (voltage sensing, sourcing, etc) the programmer just used single precision variables to pass information.
    I think these problems should be reported toward NI, but I do not know what is the way to do this...

  • Problem with Keithley 2400 source meter

    Hello all,
    I tried to controll a keithley 2400 source meter with Labtracer using a NI GPIB-USB-HI card but when I run the test is send me this error message: "There was ab error reported on Visa Read in Query. Test aborted. Error code: -1073807339"
    is this card (NI GPIB-USB-HI) able to controll keithley 2400 source meter ?
    the keithley 2400 source meter screen show "REM TALK" during the running of the program,
    I installed NI488227 in my computer (windows XP) and also "Agilent Connection Expert", this later also show no possibilty to connect with the Keithley meter, I attached a file for  "Agilent Connection Expert".
    Any help is appreciated
    Thank you by advance
    Attachments:
    ACE.docx ‏133 KB

    Follow the preliminary steps to first check if the device is able to communicate via the GPIB-USB convertor.
    navigate to: Start>>National Instruments>>NI 448.2>>Interactive control.  Use this utility to query the GPIB device for some standard commands for e.g.: *IDN?
    There is also a GPIB analyzer in the above path which you can use to verify the device connectivity to the system.
    Also for communicating the with 3rd party GPIB devices always enable " NIVisa Tulip.dll" which will help recognising the device in max.  Look at the picture to enable this option in max.
    post back for queries
    With regards,
    JK
    (Certified LabVIEW Developer)
    Give Kudos for Good Answers, and Mark it a solution if your problem is solved.
    Attachments:
    tulip.jpg ‏175 KB

  • Mesures rapides courant sur keithley 2400

    bonjour,
    J'ai fait un programme qui me permet de mesurer le courant d'un échantillon par pas de temps sur un KEITHLEY 2400 :
    (source V / Mesure I toutes les secondes )on envoie une tension fixe et on mesure le courant par intervalle de temps.
    Le VI fonctionne bien sous LABVIEW2009 avec les bibliotheques du 2400 et seul le module KE24XX_READ se trouve dans une étape d'une boucle n dont je mesuse le temps à chaque mesure.
    Le probleme se corse lorqu'on veut faire des mesures rapides (toutes les ms)
    Le module prend 150ms pour faire sa mesure et je suis passé à la programmation par code source avec des GPIB WRITE et READ
    Or ces commandes fonctionnent dans le NI Exploreur (WRITE SOURC:FUNC VOLT ou OUTP ON par exemple) mais pas avec les modules GPIB WRITE.
    Est ce que quelqu'un aurait déjà fait du sourceV/MesureI par code source ?
    Merci d'avance
    Pièces jointes :
    Idet_3.vi ‏89 KB

    Bonjour,
    Je vous suggère de vous référer aux KB suivantes :
    Why Can I Communicate with My GPIB Instrument in MAX, but Not in LabVIEW?
    Source Code for GPIB Language Interfaces
    Cordialement,
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    National Instruments France
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  • How can I measure above 100 point by Keithley 2400?

    Hello!
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  • URGENT : Error: nca_connect_server: cannot communicate host ...on port....

    URGENT : Error: nca_connect_server: cannot communicate host ...on port....
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              "RecContentType=text/plain",
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    Kind Regards
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