neoVI Labview example

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• Problem loading of LabVIEW examples: "an error has occurred - system OR Web server does not work."

  On one of my computers, whenever I try to load any LabVIEW example, it does not load and I get this message. It works on other computers.

  How do I tell me what's not on the computers?

  OK I get it; the trick is to learn how to do a search of this forum with the right combination of magic words, and it may take a few tries. It seems the least better words. The words magical combination "OR Web Server system" showed me to go to the Panel > programs and repair LabVIEW; problem solved.

• How to change Teststand UI controls in the Labview example

  Hello community,

  32-bit Teststand 2014

  32-bit Labview 2015

  I'm trying to make changes to the provided Simple Interface for Teststand in Labview called first level VI.vi.

  I want to be able to make changes to the Teststand UI controls and have a difficult time.

  However, I found the brower property for buttons, I can make some changes in the style of text.

  There are a few buttons I disable and came across this link for help, but I did not fully understand it.

  I tried to use 'Ungroup by name' and 'node to invoke. However, I don't think that I did it correctly.

  http://digital.NI.com/public.nsf/WebSearch/3FE78CAEC4AD770286256E9100090900?OpenDocument

  Then I tried to rename the buttons and came across this link.

  http://digital.NI.com/public.nsf/WebSearch/530118071CD7E3B686256E89007BB16D?OpenDocument

  Also, while looking at examples of labview for teststand I noticed that it is possible to go for regular control of labview Teststand UI control. Is it interesting to watch in place?

  I want to make the interface better watch and not be able to make changes for the control of teststand UI holding me.

  Any help or examples on how to make changes to a teststand UI control would be greatly appreciated please.

  Thank you

  These buttons are buttons of ActiveX.

  To change their properties, right-click on it and select property browser...

  

  Please note that the TestStand has.  Changes may be overwritten by TestStand during execution.

  If you use a LabVIEW native button, you can use the method of the ActiveX button => don't click to start the sequence when your button is clicked.

  However, you have to take care of the other properties (such as devil when start run sequence) of your button yourself.

• Why LabVIEW example projects using Global Variables?

  I'm puzzled.  I've been pretty good programmers LabVIEW talks (including some who work for the OR) and came away with the impression that Global Variables should, as a general rule, be avoided, with functional Global Variables (alias VI Globals) generally preferred for "local memory".

  I have studied some of the example distributed with LabVIEW, 2012 and 2013, in particular the proposed acquisition in real time and am struck by the use of Global Variables, where I'd be inclined to use instead a FGV.  For examples, to stop all the loops on the RT target, the overall "All the RT loop Stop" is defined; 'Constants' of configuration (such as timeouts, Streme network names, the names of the journal folder) are kept as Globals; Streme network endpoints are stored in Globals.

  [Note - there is a weird spelling of the second word of the network Streme, above - when I tried to post with the correct spelling, I got an error message saying this word is 'not allowed in this community".]  I apologize for the offense, but I must confess that I do not understand what the problem with the help of the spelling of this word...]

  Why use Globals in these cases, rather than write a bunch of VIGs to hold these data?  Note that almost all these Globals are 'Read' essentially (written once when a resource is acquired, for example) or "Read Only" (treated as if they were a constant).  Indeed, read-only variables can be written as a Subvi with only an output terminal, acting as a (visible, due to the icon) constant.

  I can see advantages to this approach.  On the one hand, VIGs can have error bounds who run the data flow (I just spotted a bug "data flow" in code, I am developing that is based on this model, to read configuration data to an XML file in a world and in the same VI, Global wiring to a "use - me" terminal, but with no guarantee that I'll read the overall after I write it).

  It is, I suppose, a matter of 'speed' - perhaps Global Variables are 'faster' than VIGs (especially if the VIG 'sits' on an error line).  My thought, however, is that this difference is likely to be trivial, especially as these VIGs (or Globals) tend to become "occasional" calls (with the exception of the indicator 'all the loop Stop' which is called once per line).

  Are there other arguments or considerations that make a Variable global to a better choice than a VIG?  Is there a reason that LabVIEW developers put in these start-up of projects LabVIEW?

  BS

  I have to ask, how do you use functional Global Variables?  Like just a Get and Set?  If so, you can use a global variable.

  Yes, globals are faster and use much less overhead.  At the summits of CLA in recent years, we talked about using globals.  The most common use is for Write-Once-Read Many and writing-never-Read Many with configuration data.  It's a good idea to use globals with the constants that can change on you.  It turns out that the world will have the same performance as a constant in this case.  This is done so that you don't have 1 place to edit the 'constant '.

  The rule on "Globals are evil" actually goes back several years when NEITHER had the huge "people of the country are bad" vendata.  But NEITHER explains well how to do things properly.  So I found people, instead of using local variables, using the value property node.  It's even worse because the property causes thread swaps and kills your performance.  It wasn't until I shouted to people to use wires and shift registers I have seen improvements in the way in which people wrote their code.  So people are always riffling in the use of globals and decided to use FGVs with the EEG and fixed rather cases.  But this does not solve the problem of the conditions of race with critical data and you cause an additional burden.

  So from my experience, I use globals all the time for configuration data.  Yes, you must be careful about the race conditions.  But as long as you understand that it is a common and useful practice.

  I would not use a global variable for data that are constantly changing (use registers to offset or Action motor) and/or processes that have critical sections of code (use a motor of Action).

  NOTE: I use the definition of Mercer to FGV (a Get/Set only) and motor Action (many cases which specifically affect the data).

• Código desordenado al open an example of LabVIEW

  Hola a todos:

  The quiero comentar than I have a problema al open a LabVIEW example code is desordena todo el código sin import example sea el problema Québec are the same. Commenting stupid put compañeros amendments dimos cuenta Québec a todos los as only the same portable tenian ese problema. CABE senalar as solo are con los examples of LabVIEW sino con otro otras personas, if ya el codigo por TR codes to escribe desordenadamente ahora con esto to pone peor.

  Quisiera saber el reason por el cual pasa eso, TR are por mi Máquina quisiera saber why? Y tiene alguna respond como lo puedo resolver if.

  Some como imagenes annex to ve los examples e information sober mi Laptop:

  

  

  

  Y como estos examples hay muchos, pero son los Québec recuerdo in este momento.

  Information sober mi Laptop:

  

  Hola,

  UNA opcion pudiese ser as el VI tenga activated than el los objetos cambie change el tamano del vi al tamano y you tengas una resolución por lo than todos menos themselves together. Pero por lo than veo los controls como tal estan well, what tienes diferente is the text, eso deberse a that the Application defined en fuente you can computador large sea mas del computador donde is programo originalmente el VI, prueba el text seleccionando y colocando una fuente mas pequeña.

  Saludos,

• PXI-5114 example LabVIEW Code

  Salvation;

  I'm looking for example LabVIEW PXI-5114 configuration including trigger code? I have the mounted 5114 in SMU-1065 chassis.

  I am using LabVIEW 2010.

  Thank you for all the examples.

  Steve

  Hello Steve,.

  To find the code for NO-Scope example in LabVIEW 2010, please navigate to the inventor of LabVIEW example (help > find examples) and search for niScope EX Acquistion.vi configured. This VI will show you the different triggers niScope has and how they are implemented.

• use IMAQdx functions in Labview Communications System Design Suite

  Hello

  I would like to read an image and use the bytes obtained to perform certain functions. Currently, the system has Labview Communications System Design Suite (2014 SP1)

  and vision acquisition software installed. I don't know how to use IMAQdx features in labview.  Can anyone help?

  Thank you!

  I do not work with the Design Suite of Labview Communications System.

  In LAbVIEW, however, when after you install LabVIEW first, then the Vision Acquisition, you can use the example Finder locate IMAQ or IMAQdx for LabVIEW examples: in LabVIEW, select help > find examples. This will open the Finder of the example. On the "Search" page, type the keyword "IMAQ" or "IMAQdx" (depending on your device) and look at the examples that come with the Acquisition of the Vision for LabVIEW.

• Connect labview with proteus

  How to connect labview to proteus in order to send commands to the microcontroller AVR, there a useful link or source code?
  I've heard talk about VISA can you help me with a code example or source?

  I don't know anything specific to the APR, but Finder of LabVIEW example has many examples on the realization of serial communication ("Help-> Find examples.." then look for series). If you know the Protocol, then you can use the samples to create right necessary read and write commands.

  Also a quick search on Google for 'Labview APR' had this as the top most successful:

  http://forums.NI.com/T5/instrument-control-GPIB-serial/interfacing-AVR-with-LabVIEW-serially/TD-p/22...

• VBAI 2011, possible to migrate directly to LabVIEW 8.6 code?

  Hello

  I was wondering if VBAI 2011 can migrate from the inspections directly to LabVIEW 8.6 code.  I have installed on my computer:

  VBAI 2011

  LabVIEW 8.6

  LabVIEW 2010

  LabVIEW 2011

  Module OR Vision Development 2011

  I don't see the option for LabVIEW 8.6 in my menu.  Any suggestions?

  John Wu

  Riobotics Consulting

  I encourage you to watch the Vision Builder AI LabVIEW API, which is supported in LabVIEW 8.6.

  This feature allows you to control Vision Builder AI of LabVIEW (open inspection, run once, get results etc.)

  Unless your application requires very tight hardware integration, with equipment you can do only in LabVIEW code, the code that you write with the API will be much cleaner to work with generated code, which is somewhat complex.

  Look at the examples located here:

  C:\Program Files (x 86) \National Instruments\Vision VBAI 2011\API Examples\LabVIEW examples

  Best regards

  Christophe

• examples of can

  Does anyone know of any example CAN. I received a Newsletter or who talked about how well the package CAN is and even gave a display of an automobile application where the façade was posted, but no reference to where the code could be found. The VIs in LabVIEW all have a context help file as assistant for the CAN live, but unfortunately there are no examples of using the BOX of screws

  Cuthbert,

  "" "" If you have installed the drivers of NI-CAN, you open finder LabVIEW example of Help "find examples... then Browse ' output material & ' CAN ' NI-CAN.

  Www.NI.com/code is also a great place to find examples of shipping and customers live. Hope this information helps.

  -Nick-

• Cannot find examples of generation signal

  Hello

  Here is the page with information about the signal generation modules

  http://zone.NI.com/reference/en-XX/help/371361H-01/lvanls/signal_generation_vis/

  At the bottom of the page, there is information that these examples can be found at the following location:

  labview\examples\analysis

  But in my version, there is no file examples\analysis.

  Where can I find these examples?

  Thank you

  This link is LabVIEW 2011.  One of the best features of 2013 was a complete redesign of all the examples! Look here \examples\Signal Processing\Signal generation directory

• LabView hangs after displaying a pop-up window

  With my Test.vi I start a Subvi (Test1.vi). These two screws are set below. When you press the Start in Test.vi button a popup window is started via
  Test1.VI. can I close this pop-up window with an OK button. The 1st time it works fine. By pressing Start and the time of 2nd OK button causes all LabView hang. It can only
  be arrested by the Task Manager. I'm using LabView 2014.
  Software details: Version of LabView 2014 (free entry)

  What you do doesn't make too much sense. You do a lot of programmatic errors. You should learn how to properly use the Structures of the event (through the Core 1 and 2 training materials). You should put controls (action buttons, control Boolean OK) associated with a case of event in the event company. Moreover, the reason why your grip VI: in your Subvi you close the front panel of your VI via the property node, but it will still be running, you do not set a mechanism to stop the VI.

  

  Did you watch a few appropriate screws coming with LabVIEW examples? Go to file--> new...--> a UI event handler. Open it and watch how it works...

  

• LabVIEW fpga & RT labvew

  
  

  Hey saying,.

  It looks like your application will need to have 3 main components: A VI host on your computer, a RT VI on the cRIO and an FPGA VI. To start, you may consider looking through the following documentation:

  LabVIEW FPGA Module training

  http://www.NI.com/white-paper/3555/en

  Getting started with the FPGA Module

  http://zone.NI.com/reference/en-XX/help/371599G-01/lvfpgahelp/fpga_getting_started/

  If you are already familiar with the basics, then you can consider starting for example from the Finder of LabVIEW example. In LabVIEW, select help > find examples. Then select material input and output > CompactRIO > FPGA Fundamentals. From here you can look through examples more specific to your application. I hope this helps!

  -Ryan S.

• Build ActiveX servers in LabVIEW

  Hello

  I'm trying to implement an ActiveX Server is the "out-of-process Server" type (which means that it is a program (.exe file) windows executable) in LabVIEW.  I have seen tons information that the way which use LabVIEW as a client ActiveX and even several examples of creating a shared library (dll) with LabVIEW that other applications can access (but are in-process servers) and some examples of LabVIEW as an activeX server, but nothing on how to create ActiveX with LabVIEW objects.  I need information on how to specify the CLSID of the COM object so that the user of the object can create an instance of it.  I also need to implement the methods that can be called using IDispatch.

  I searched all LabView day and same ordinate: Advanced Programming Techniques, second edition from Amazon.com to try to find examples.  The best information I've found is how exactly to what I'm trying to do with LabWindows.  The link to this article is here-->http://www.ni.com/white-paper/2714/en.  Is there something similar for LabVIEW?

  Everything else, I read, simply go to tools--> VI server and check the Active X.  I also found this link, but I'm looking for information much more than what is expected

  http://zone.NI.com/reference/en-XX/help/371361H-01/lvhowto/activating_lv_activex_srv/  (I couldn't find examples that this link refers to "Consult the files VBToLV.frm, VBToLV.vbp and VBToLV.vbw in labview\examples\comm for an example of calling LabVIEW as a Server ActiveX in Microsoft Visual Basic.")

  I was really hoping to find information on how to build ActiveX objects in LabVIEW and to implement a COM object as an executable file.  Is this possible in LabVIEW?

  glstill wrote:

  I was really hoping to find information on how to build ActiveX objects in LabVIEW and to implement a COM object as an executable file.  Is this possible in LabVIEW?

  I'm 99% positive, the answer is no. Historically, the level of interaction LV has had with the operating system has never been so high that he was seen with other languages, probably due to a combination of being supported on multiple platforms, a quite different programming paradigm and a relatively low interest rate charged.

  The ActiveX Server LV has, as explained in the link you gave, is a way to connect to some of the hierarchy of classes from LV itself, not to the user creates the classes.

  You have other alternatives are the construction of standard in DLLs LV functions or in .NET interop assemblies (which I suppose is better for you, if you want that managed code). I have no practical experience with either.

• The 2012 VBAI Migrateing move KING in LabVIEW

  Hello

  I'm working on a school project were that the goal is to sort different objekt using 2 webcams, VBIA 2012 and 2012 of LabVIEW. Later this week, my program worked allmost that perfectly, just some small change should be made. After I installed LabVIEWmyRIO 2013 region of interest moves directly in the upper left corner of every time I open my projekt in LabView 2012, and it is therefore impossible to deteckt anything. When I opened my projekt VBAI 2012 each parameter is as I want.

  Then, I tried to make a new inspection in VBAI 2012 just to see if the same thing happens when I migrate to LabVIEW 2012. And he made over and over again.

  I have attached a picture of how it look like in VBAI 2012 and a picure of what it looks like in LabVIEW 2012, after that he migrated.

  Version of the software I'm using:

  -2012 LabVIEW c. 12.0.1f5 (32 bit)

  -2012 VBAI SP1 f2

  - NEITHER IMAQdx 4.3.0

  BRG

  Kristoffer

  The Kings are dynamically created a stage to create KING? Could attach you a simple inspection to illustrate this problem? Have you considered using the LabVIEW API to call VBAI (there is a set of screws installed in your palette for LabVIEW that give you that access open inspections, perform inspections, obtain results and images and it will work in fact the same engine as the normal VBAI the fact you will get the same results and this way, it is easy to make changes to your inspection VBAI without having to migrate to the LV again. It also allows for more flexible options for what versions of LV, you can use which versions of VBAI. See the example for delivery here:

  C:\Program Files (x 86) \National Instruments\Vision Builder HAVE 2012\API Examples\LabVIEW Examples\LabVIEW API example (Local) .vi

  Hope this helps,

  Brad