Teststand cvi probleme de callback

Bonjour,
J'utilise TestStand(2013) en mode Batch parallel et mon interface utilisateur est gérée par CVI(2012).
Quand j'ai besoin d'informations provenant de l'utilisateur, Teststand appel une de mes DLL CVI.
Au debut de ma sequence (dans le model option) Je viens demander plusieurs informations à l'utilisateur et les échange entre teststand et cvi se passent très bien.
Lorsque mes socket sont créés j'arrive bien à mettre à jour mon interface graphique via CVI, mais mes Callback ne fonctionne plus.
Par exemple je souhaite seulement attendre l'appui par l'utilisateur sur un bouton de commande.
J'utilise donc le RunUserInterface dans ma fonction, que ma callback vient acquitter lors de l'appui sur le bouton.
Le problème est que l'appui sur le bouton ne fonctionne pas. Cela ressemble un peu à un problème de gestion des événements.
Une chose étrange est que lorsque je passe en mode debug sur CVI, ma callback fonctionne correctement.
Je voudrai savoir si quelqu'un a déjà rencontré cette situation ou si quelqu'un à une idée?

Bonjour,
avez-vous déjà essayé ceci ?
Error Code 145 - ActiveX Control Not Registered in LabWindows/CVI
http://digital.ni.com/public.nsf/allkb/9894BE2B832B7FDE86256ECD00041172?OpenDocument
Aurelie

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Problem with CVI blocking UART Callback

Hi,
I have been using LabWindows CVI 9.0 since a few years now and I have seen a problem that didn't blocked me until now.
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HI Penou,
In fact it is a good idea using multiple Threads to avoid this kind of behavior.
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>> Les rencontres techniques de NI - Mesures et acquisition de données : de la théorie à la mise en ...

TestStand CVI OI link errors

I was given a .UIR file from a teamate (another company), but no implementation, so that our GUI could ultimately look and feel like theirs (since that's what the customer wants). I'm using CVI 8.0 and I opened up the .UIR and ran the UI to Code Converter tool. Since the tool forces you to enter the name of the .h and .c target files (associated with the panel), I ran the tool one panel at a time. Ultimately, I had about eight .h and eight .c files. When I do a 'create executable', I get 60 link errors. The messages are all quite similar (but for different symbols) in that they say "Undefined symbol, '_SD_ExeEntryPoint1' referenced in SeqDisp.c". I see where I use SD_ExeEntryPoint1 (no underscore in front), but I don't see where the _(underscore) version is coming from/being referenced. Any clues here would be very appreciated.
In general, though, is this a correct approach? Can I begin with a UIR that has much of the TestStand full-featured OI functionality available in its different panels and generate code, then begin filling in each template that's produced?

You can find a new style OI in:
C:\Program Files\National Instruments\TestStand 3.<x>\OperatorInterfaces\NI\Full-Featured\CVI\
I don't have an old TestStand installed to be sure, but the old style OI would probably be found in:
C:\Program Files\National Instruments\TestStand <1.x or 2.x>\OperatorInterfaces\NI\Full-Featured\CVI\
The old style example has a lot more code and that code is more complicated than the code in the new style example.
The UIR you have is a CVI file, thus converting it to TestStand 3.5 doesn't apply.
If you have to implement the whole application from scratch (instead of from the source code that goes with the UIR you have), you will probably be better off in the long run by starting the example from TestStand 3.5 and modifying it using the UIR you received as a user interface specification of sorts.
Controls on the old UIR that did "TestStand" things like display the steps in a sequence are now ActiveX controls in the new example which you configure and connect to other controls. In the old example, the function of these controls was entirely implemented in the example source code and the result was complex code with less functionality.
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Problems creating callback VI

Hi,
I stumbled over some strange behavior....
I tried to register a TestStand ActiveX callbacks, but I'm facing multiple problems:
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So I manually deleted the "broken" controls and replaced them with the typedef'ed one and wired them up to the connector block.
The problem comes up at runtime: the Register for callback node returns Error 97: LabVIEW: A null or previously deleted refnum was passed in as an input.
What am I doing wrong?
Cheers
Oli
Programming languages don't create bad code, programmers create bad code....
Solved!
Go to Solution.

Hi Norbert,
thanks for the quick reply. Please find attached some scrrenshots:
Typedef for UserEvent
Typedef for UserEvent data
Frontpanel of automatically created callback VI
Frontpanel of modified callback VI (Error97)
The typedefs reside within the same lvlib as the caller. The callback VIs are reentrant. They are also marked private within the library, changing the access scope to public did not change the behaviour.
Do you think http://forums.ni.com/t5/LabVIEW/Register-Event-Callback-problem-with-Linkam-ActiveX-controls/td-p/15... could be related?
BTW using LV2012SP1 ans TS 2012SP1
Cheers
Oli
Programming languages don't create bad code, programmers create bad code....

Problem registering Callback applet in weblogic 8.1 SP3

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I am having a applet which is signed and loaded from the web application. When i am accessing the remote functions from RMI server, it works fine.
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I check all source files an there is no any #ifdef that could cause problems, the program is correct because is running in an old PC, what i am doing is trying to create an installer to change the program to a new PC, what i receive was just the folders project that are in that machine, but i can do work the program in my machine.

Ni.6363 CVI, probleme d'échantillionnage

Bonjour,
Je programme actuellement sous l'environnement CVI. Et je possède une 6363 qui est sensé pouvoir mesuré sur 16 canaux en différentiel, avec une fréquence d'échantillonnage de 1M/S par canal.
Or avec ma carte, on est obligé de diviser la fréquence d'échantillonnage max par le nombre de canaux que l'on souhaite mesurer.
De quel façon je peux procéder pour ne pas etre obligé de divisé la fréquence d'échantillonnage? sachant que dans les spec de cette carte, on peut faire des mesures 1M/s par canaux
voila le code ;
//string_channel ="Dev1/ai0,Dev1/ai1,Dev1/ai2,Dev1/ai3,Dev1/ai4,Dev1/ai5,Dev1/ai6,Dev1/ai7"
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"Or avec ma carte, on est obligé de diviser la fréquence d'échantillonnage max par le nombre de canaux que l'on souhaite mesurer.
De quel façon je peux procéder pour ne pas etre obligé de divisé la fréquence d'échantillonnage? sachant que dans les spec de cette carte, on peut faire des mesures 1M/s par canaux"
Mon post précédent donne les raison de cet échantillonnage à 1Méch/s agrégé, c'est à dire, 1Méch/s partagé entre les différentes voies acquises simultanément. Ceci est du au multiplexage des voies analogique de la carte. Je vous invite à vous référer aux spécifications de la carte 6363, qui reprends ces éléments (1MS/s multichannel aggregate), et à les comparer avec les spécifications des cartes 6366/6368 par exemple.
Voici la topologie typique d'une carte multiplexée:
Si vous demandez 16 voies en acquisition analogique à une telle fréquence d'échantillonnage, vous devriez avoir un message d'erreur ou à minima une mise en garde lors de l'exécution. Qu'en est-il? Est-ce qu'une erreur apparaît? A quelle ligne? Quel code d'erreur?
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Mathieu R.
  CTD - Certified TestStand Developer / Développeur TestStand Certifié
  CLAD - Certified LabVIEW Associate Developer

Création dll sous CVI vers LabView (Callback function)

Bonjour,
J'utilise un capteur de champ magnétique dont la communication se fait sous labwindows/CVI 2012.
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Bonjour Fabien65,
Que voulez vous dire par: La communication avec le capteur se fait sous Labwindows/CVI??
Quel système d'acquisition utilisez vous ?
Si vous avez vraiment besoin de créer une dll avec Labwindows/CVI, vous devez impérativement spécifier que vous créez une dll et non un .exe.
Voici un document qui pourrait vous être utile:
http://www.ni.com/white-paper/3341/en#toc7
Cordialement.
Aurélien Corbin
National Instruments France
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I'm hoping someone out there can advise me.
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LabCat,
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Client == server - problems with callbacks

Hi everyone!
I'm having trouble establishing bidirectional communication between a client and a server (code samples are below).
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Don't feel lost, crumb. Http tunnelling is not as complex as it seems. I just started using RMI at my new job here and in a couple of weeks I've already picked up on alot of what I needed to know. (I just posted a question myself on the same topic.) Basically what you have to do is set up a web server for RMI to talk to at the server side. It will work if the webserver is listening on port 80 with the rmiservlet.ServletHandler registered to respond to any path request of cgi-bin/java-rmi.cgi. In other words "cgi-bin/java-rmi.cgi" should be the servlet-mapping of the ServletHandler. The servlet merly acts as a proxy on behalf of the RMI client and fowards the request to the desired port on the server. If you know how to set up a servlet as the default web app then it is really a breeze. On the client side you only need to set the http.proxyHost and http.proxyPort system properties to the appropriate values for your proxy server. (I mistyped these property names in my prior post use what I have here as I just read it out of the RMI book.) Do a search on HTTP tunnelling and you should turn up dozens of hits. I have the source to the servlet if you need it. I've already modified it for my own purposes though it should still work for you. If you forego http tunnelling then you'll have to do a complete app rewrite to use another protocol because RMI just doesn't work through firewalls without it. Alternatively you can get down and dirty with some low level sockets coding (this is what I'm thinking I'll end up doing eventually) to get it working without standard RMI/HTTP but that's way more complex. Unfortunately it looks like your callback code will need to be rewritten unless you either go commercial or do the socket stuff. (There does seem to be a shareware product called rmi doves that would help you here.) I'll be happy to assits you in any way as you need help.
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2. LABVIEW: (Hex 0x80004005) Unspecified error.
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I suspect that there is a problem when connecting to the database but I cannot understand what it is or why this is happening since the sequence runs without problems in Testand.
Could someone help?
Thank you very much!

I am sorry for the omission. As seen during a highlighted execution of the GUI, the error appears after the call of IApplicationMgr.Start (see attached image).
Attachments:
error_blogdiagram.png ‏72 KB

Teststand cvi probleme de callback

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