Features VI DAQmx differently in LabVIEW that it does in TestStand

I particularly have a VI that generates a square wave signal to control the movement of a motor. When I run the VI in LabVIEW, after a certain time, it stops (a timer is also included in VI). When this same VI is executed as an Action (or boundary Test or pass/fail Test) in TestStand, the continuous PWM signal generating indefinitely after the VI terminated and (if necessary) results were returned to TestStand. If I followed this VI with an another VI which generates a square wave and a 0% duty cycle, the motor stops, as expected. However, I cannot rehabilitate the TestStand sequence without resetting the cDAQ chassis - and even in this case, every other time only. LabVIEW reports an error-200474 (expired timeout) and TestStand reports an error-200088 (task invalid or non-existent) on other tracks.

My questions are: why? and what can I do about it?

Hey Nessalc,

After watching your program, I think I understand why you don't see a signal on your oscilloscope.  The test1 VI opens a reference to your task of meter output configures synchronization and then starts the generation time and again and more, without ever giving the working time to generate impulses form.  Generally speaking, you would do this with a DAQmx's task made a Subvi wait until done (according to if it is a continuous or finite pulse train).

If you attempt to run a train of pulses for a period of time, see the example called Gen dig Pulse Train - Finite.vi, which can be found in the Finder for example of NOR (material input and output"DAQmx" Generating Digital pulses).  Based on the value of the number of pulses and frequency controls, you can set up your device for a pulse train of output for a certain period of time.

I also noticed that you are not clearing your task at the end of the program.  It is necessary to free up your resources before attempting to create another task for this resource.

The following image is a screenshot of the example program block diagram (Gen dig Pulse Train - Finite.vi).  I have marked the key subVIs that I found missing in your application.

I hope this helps.  Let me know if you have questions related to this issue.

Tags: NI Software

Similar Questions

  • can I create a DLL file for labview that has DLL library with inside?

    Hello everyone,

    I am developing an application for the cards PCI devicenet in labview (beginner to labview) environment.  Is there a DLL file for the PCI card from the provider. But it's too complicated for a beginner to call each function in the DLL of labview. Therefore, I'm trying to re - use a VC ++ program (working properly) that calls some sellers DLL library functions.    To do this, I created the DLL file which includes all headers and libraries the provider DLL, as indicated in the attached figure. But I couln can't see the effect on the device. is it possible to create a DLL file for labview that has DLL library with inside? If this is not the case, how can I implement the program shown in figure?

    I would like to wish a huge as to advance.

    It is not something I have a lot of experience in so I don't know all the details of the restrictions or requirements etc - but it is certainly possible to create wrappers for the dll and then use them in LabVIEW - this is sometimes necessary to convert some native types/data structures in C/C++ into something that you can switch to your other DLL LabVIEW.

    There is a link here: http://digital.ni.com/public.nsf/allkb/06ECDC689DDA0F3D862574440074CD95

  • is it possible to tell me how I can make program in labview that take black and with image pixels and give the coordinates of black or white pixels again to me.

    Hello everyone

    is it possible to tell me how I can make program in labview that take black and with image pixels and give the coordinates of black or white pixels again to me.

    It depends on the image and the module LabVIEW available to you. LabVIEW can open bitmap and png files and convert them into tables: if it's really a monochromatic (depth of 1 bit) you get a table 2D boolean, T for white, F for black. Just look at the index of the item to its details (don't forget that LabVIEW does not use the order of rows and columns, so you must transpose and reflect the table). If you have a 24 bit bitmap, the table will contain the color in hexadecimal synthesis (000000 for black, FFFFFF is white and so on); Yet once, you simply check if the element of the array correspond to your requirements and get its index.

    With the vision that you module con open other pictures and perform advanced on them without convert them into tables. Anyway, you can just type the extension of your image using LabVIEW and see what you get.

    Here is a code snippet to open a monochromatic image

  • I created a backup feature of document for each document that I created, including new documents. I don't want no more of this function. How can I remove it?

    Original title: Backup Document

    I created a backup feature of document for each document that I created, including new documents. I don't want no more of this function. How can I remove it?

    Hey BradleyCloetingh,

    Can you reverse your actions when you first made the changes, just go through the process and change everything to the original?
    Or you could do a System Restore.
    Let us know if you are still looking for an answer.
    Thank you!
  • Mr President, how can I enter two rows at the same time with different default values that only the first line to use see?

    Mr President.

    My worm jdev is 12.2.1

    How to enter two rows at the same time with different default values that only the first line to use see?

    Suppose I have a table with four fields as below

    "DEBIT" VARCHAR2(7) , 
      "DRNAME" VARCHAR2(50),
      "CREDIT" VARCHAR2(7) , 
      "CRNAME" VARCHAR2(50),
    

    Now I want that when I click on a button (create an insert) to create the first line with the default values below

    firstrow.png

    So if I click on the button and then validate the second row with different values is also inserted on commit.

    The value of the second row are like the picture below

    tworows.png

    But the second row should be invisible. It could be achieved by adding vc in the vo.

    The difficult part in my question is therefore, to add the second row with the new default values.

    Because I already added default values in the first row.

    Now how to add second time default values.

    Concerning

    Mr President

    I change the code given by expensive Sameh Nassar and get my results.

    Thanks once again dear Sameh Nassar .

    My code to get my goal is

    First line of code is

        protected void doDML(int operation, TransactionEvent e) {    
    
            if(operation != DML_DELETE)
                 {
                     setAmount(getPurqty().multiply(getUnitpurprice()));
                 } 
    
            if (operation == DML_INSERT )
                       {
                               System.out.println("I am in Insert with vid= " + getVid());
                           insertSecondRowInDatabase(getVid(),getLineitem(),"6010010","SALES TAX PAYABLE",
                            (getPurqty().multiply(getUnitpurprice()).multiply(getStaxrate())).divide(100));      
    
                           }
    
            if(operation == DML_UPDATE)
                              {                                                    
    
                                 System.out.println("I am in Update with vid= " + getVid());
                             updateSecondRowInDatabase(getVid(),
                                 (getPurqty().multiply(getUnitpurprice()).multiply(getStaxrate())).divide(100));      
    
                              }                      
    
            super.doDML(operation, e);
        }
        private void insertSecondRowInDatabase(Object value1, Object value2, Object value3, Object value4, Object value5)
                  {
                    PreparedStatement stat = null;
                    try
                    {
                      String sql = "Insert into vdet (VID,LINEITEM,DEBIT,DRNAME,AMOUNT) values " +
                 "('" + value1 + "','" + value2 + "','" + value3 + "','" + value4 + "','" + value5 + "')";  
    
                      stat = getDBTransaction().createPreparedStatement(sql, 1);
                      stat.executeUpdate();
                    }
                    catch (Exception e)
                    {
                      e.printStackTrace();
                    }
                    finally
                    {
                      try
                      {
                        stat.close();
                      }
                      catch (Exception e)
                      {
                        e.printStackTrace();
                      }
                    }
                  }  
    
                  private void updateSecondRowInDatabase(Object value1, Object value5)
                  {
                    PreparedStatement stat = null;
                    try
                    {
                      String sql = "update vdet set  AMOUNT='"+ value5+"' where VID='" + value1 + "'";                     
    
                      stat = getDBTransaction().createPreparedStatement(sql, 1);  
    
                      stat.executeUpdate();
                    }
                    catch (Exception e)
                    {
                      e.printStackTrace();
                    }
                    finally
                    {
                      try
                      {
                        stat.close();
                      }
                      catch (Exception e)
                      {
                        e.printStackTrace();
                      }
                    }                  
    
                  }
    

    Second line code is inside a bean method

        public void addNewPurchaseVoucher(ActionEvent actionEvent) {
            // Add event code here...
    
            BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
                   DCIteratorBinding dciter = (DCIteratorBinding) bindings.get("VoucherView1Iterator");
                   RowSetIterator rsi = dciter.getRowSetIterator();
                   Row lastRow = rsi.last();
                   int lastRowIndex = rsi.getRangeIndexOf(lastRow);
                   Row newRow = rsi.createRow();
                   newRow.setNewRowState(Row.STATUS_NEW);
                   rsi.insertRowAtRangeIndex(lastRowIndex +1, newRow);
                   rsi.setCurrentRow(newRow);
    
                   BindingContainer bindings1 = BindingContext.getCurrent().getCurrentBindingsEntry();
                   DCIteratorBinding dciter1 = (DCIteratorBinding) bindings1.get("VdetView1Iterator");
                   RowSetIterator rsi1 = dciter1.getRowSetIterator();
                   Row lastRow1 = rsi1.last();
                   int lastRowIndex1 = rsi1.getRangeIndexOf(lastRow1);
                   Row newRow1 = rsi1.createRow();
                   newRow1.setNewRowState(Row.STATUS_NEW);
                   rsi1.insertRowAtRangeIndex(lastRowIndex1 +1, newRow1);
                   rsi1.setCurrentRow(newRow1);
        }
    

    And final saveUpdate method is

        public void saveUpdateButton(ActionEvent actionEvent) {
            // Add event code here...
    
            BindingContainer bindingsBC = BindingContext.getCurrent().getCurrentBindingsEntry();      
    
                   OperationBinding commit = bindingsBC.getOperationBinding("Commit");
                   commit.execute(); 
    
            OperationBinding operationBinding = BindingContext.getCurrent().getCurrentBindingsEntry().getOperationBinding("Commit");
            operationBinding.execute();
            DCIteratorBinding iter = (DCIteratorBinding) BindingContext.getCurrent().getCurrentBindingsEntry().get("VdetView1Iterator");// write iterator name from pageDef.
            iter.getViewObject().executeQuery();  
    
        }
    

    Thanks for all the cooperation to obtain the desired results.

    Concerning

  • I downloaded and installed creative cloud with an email address, and when I open it, it says that I need to check an old different email address that no longer exists. What should I do

    I downloaded and installed creative cloud with an email address, and when I open it, it says that I need to check an old different email address that no longer exists. What should I do

    Follow the procedure below:


    N ° 1)

    Launch the Task Manager and end all Adobe related tasks such as Creative cloud, CoreSync, AAMUpdater... etc.


    Step 2)

    Press Windows button (located between Ctrl and Alt buttons) with the key R together at once, you will get a command window.

    Type below command and press the enter"" key.

    AppData

    It will open the Appdata folder.

    Then navigate to local > Adobe > OOBE. Open the OOBE folder and delete the file " Opm.db".

    Once you had deleted the Opm.db file, run Adobe Creative Cloud application and check.

  • my browser cannot open google and facebook and other https sites that it does not open even the app store does not work, I tried to change my DNS google DNS and disable IPv6 but still no use, help PLZ!

    my browser cannot open google and facebook and other https sites that it does not open even the app store does not work, I tried to change my DNS google DNS and disable IPv6 but still no use, help PLZ!

    You may have installed one or more variants of the malware "VSearch' ad-injection. Please back up all data, and then take the steps below to disable it.

    Do not use any type of product, "anti-virus" or "anti-malware" on a Mac. It is never necessary for her, and relying on it for protection makes you more vulnerable to attacks, not less.

    Malware is constantly evolving to work around defenses against it. This procedure works now, I know. It will not work in the future. Anyone finding this comment a couple of days or more after it was published should look for a more recent discussion, or start a new one.

    Step 1

    VSearch malware tries to hide by varying names of the files it installs. It regenerates itself also if you try to remove it when it is run. To remove it, you must first start in safe mode temporarily disable the malware.

    Note: If FileVault is enabled in OS X 10.9 or an earlier version, or if a firmware password is defined, or if the boot volume is a software RAID, you can not do this. Ask for other instructions.

    Step 2

    When running in safe mode, load the web page and then triple - click on the line below to select. Copy the text to the Clipboard by pressing Control-C key combination:

    /Library/LaunchDaemons

    In the Finder, select

    Go ▹ go to the folder...

    from the menu bar and paste it into the box that opens by pressing command + V. You won't see what you pasted a newline being included. Press return.

    A folder named "LaunchDaemons" can open. If this is the case, press the combination of keys command-2 to select the display of the list, if it is not already selected.

    There should be a column in the update Finder window. Click this title two times to sort the content by date with the most recent at the top. Please don't skip this step. Files that belong to an instance of VSearch will have the same date of change for a few minutes, then they will be grouped together when you sort the folder this way, which makes them easy to identify.

    Step 3

    In the LaunchDaemons folder, there may be one or more files with the name of this form:

    com Apple.something.plist

    When something is a random string, without the letters, different in each case.

    Note that the name consists of four words separated by dots. Typical examples are:

    com Apple.builins.plist

    com Apple.cereng.plist

    com Apple.nysgar.plist

    There may be one or more items with a name of the form:

    com.something.plist

    Yet once something is a random string, without meaning - not necessarily the same as that which appears in one of the other file names.

    These names consist of three words separated by dots. Typical examples are:

    com.semifasciaUpd.plist

    com.ubuiling.plist

    Sometimes there are items (usually not more than one) with the name of this form:

    com.something .net - preferences.plist

    This name consists of four words (the third hyphen) separated by periods. Typical example:

    com.jangly .net - preferences.plist

    Drag all items in the basket. You may be prompted for administrator login password.

    Restart the computer and empty the trash.

    Examples of legitimate files located in the same folder:

    com.apple.FinalCutServer.fcsvr_ldsd.plist

    com Apple.Installer.osmessagetracing.plist

    com Apple.Qmaster.qmasterd.plist

    com Apple.aelwriter.plist

    com Apple.SERVERD.plist

    com Tether.plist

    The first three are clearly not VSearch files because the names do not match the above models. The last three are not easy to distinguish by the name alone, but the modification date will be earlier than the date at which VSearch has been installed, perhaps several years. None of these files will be present in most installations of Mac OS X.

    Do not delete the folder 'LaunchDaemons' or anything else inside, unless you know you have another type of unwanted software and more VSearch. The file is a normal part of Mac OS X. The "demon" refers to a program that starts automatically. This is not inherently bad, but the mechanism is sometimes exploited by hackers for malicious software.

    If you are not sure whether a file is part of the malware, order the contents of the folder by date modified I wrote in step 2, no name. Malicious files will be grouped together. There could be more than one such group, if you attacked more than once. A file dated far in the past is not part of the malware. A folder in date dated Middle an obviously malicious cluster is almost certainly too malicious.

    If the files come back after you remove the, they are replaced by others with similar names, then either you didn't start in safe mode or you do not have all the. Return to step 1 and try again.

    Step 4

    Reset the home page in each of your browsers, if it has been modified. In Safari, first load the desired home page, then select

    ▹ Safari preferences... ▹ General

    and click on

    Set on the current Page

    If you use Firefox or Chrome web browser, remove the extensions or add-ons that you don't know that you need. When in doubt, remove all of them.

    The malware is now permanently inactivated, as long as you reinstall it never. A few small files will be left behind, but they have no effect, and trying to find all them is more trouble that it's worth.

    Step 5

    The malware lets the web proxy discovery in the network settings. If you know that the setting was already enabled for a reason, skip this step. Otherwise, you should undo the change.

    Open the network pane in system preferences. If there is a padlock icon in the lower left corner of the window, click it and authenticate to unlock the settings. Click the Advanced button, and then select Proxies in the sheet that drops down. Uncheck that Auto Discovery Proxy if it is checked. Click OK, and then apply.

    Step 6

    This step is optional. Open the users and groups in the system preferences and click on the lock icon to unlock the settings. In the list of users, there may be some with random names that have been added by the malware. You can remove these users. If you are not sure whether a user is legitimate, do not delete it.

  • I want to use a Terminal Airport Express to extend network provided by my Fios router/modem without going through another airport base.  Is there a way to do this?  I understand that Apple does not support this, but surely there must be a way to do this.

    Can someone tell me how to set up an Airport Express Terminal to expand Network provided by my Fios router/modem without going through an airport as a base?  I understand that apple does not support this use, but my applecare Advisor said it's possible.  Thank you!

    Unfortunately, your AppleCare Advisor is wrong if he or she has told you that an AirPort Express to extend wireless signal of a Fios router/modem.

    Function of "Extend a wireless network" Apple is an exclusive feature that was designed by Apple engineers to extend the signal from another wireless only router from Apple. Thus, the AirPort Express... or any other router Apple besides... would not be able to extend wireless a Fios network.

    SO... you have the possibility to locate the Airport Express where it is needed... And... Connect it to the Fios router/modem with a permanent, wired Ethernet cable connection, then the AirPort Express can 'extend' in this way.

    Or... If you are ready to add a second AirPort Express, connect the first near Fios modem/router with an Ethernet cable, then the second Airport Express could extend the signal first Express wireless.

    Another way to say the same thing, is that if you want an Apple AirPort router to extend wireless network... then you need two Apple routers to achieve this goal.

  • I can't access firefox, everytime I try I get that windows does not find the file, I tried it redownloading but he still gave me the same message?

    I can't access firefox, everytime I try I get that windows does not find the file, I tried to download again, but he still gave me the same message. the problem has nothing to do with my internet because it freaks on the internet explore and everythign is fine, just my computer can not access firefox for some reason any. I tried uninstallign it and then install again, but that did not work, I tried to install a different version and it still doesn't work.

    yesterday

    User Agent

    Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; MSDigitalLocker; FunWebProducts; GTB6; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 1.1.4322; OfficeLiveConnector.1.3; OfficeLivePatch.0.0 .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

    I'm sorry, but you have not answered my questions.

    (1) on the last stage Setup lets you start Firefox, if you keep all of the checkbox "Launch Firefox now", turns on Firefox when you click on "Finish"?

    (2) how did you launch Firefox when you receive the error message? How do you 'by clicking on the freshly installed target Firefox.exe?

    (3) what is the exact error message? (Post a screenshot if you cannot re-type precisely). Text you have posted it lacks an ending quotation mark and does not resemble any message I know.

  • I can't create an installer, after install the Vision Builder demo and then uninstall it. I can't create a Labview Installer more, he asks me an installer of generator of Vision, even if Labview my program does not have nothing to do with it...

    I can't create an installer on LabView, after install the Vision Builder demo and then uninstall it. I can't create a Labview Installer more, he asks me an installer of generator of Vision, even if Labview my program does not have nothing to do with it...

    Hi, Shada, this can happen if you include additional installers to your installer for example DAQmx. When you do this the installation program must include other files like MAX (Measuremente and Automation Explorer). Probably when you installed Vision Builder he updated MAX, so when your Installer try to understand MAX, his request the source where it was installed in your computer in this case Vision Builder.

    Here you can cache information so it is not asked once again, or you can download a version more recent fo DAQmx, then it will update MAX and change the dependecy.

    You can find more details about it in this KB:

    3S88PJMY knowledge base: why do I get an error message 'Missing Distribution' when you try to build an install...

    And to keep a copy, here's more information:

    How to stop missing delivery Notification whenever I build an installer?

    Best regards

  • Visa test panel works, but visa write that VI does not work

    Hello everyone, this is my first post here

    I'm trying to communicate with an instrument of piezo controller using my serial port.  I can successfully write a command using the Panel to test visa, "AV20\r" for example sets all channels of voltage of 20 volts.  In my labview vi, I set up the serial port with the same settings as I see in the Panel to test and run it, but the device does not respond.

    Any suggestion would be greatly appreciated, I'm sure I must be missing something simple here...

    Thank you

    Brian

    Are you sure your string constant or control in LabVIEW that contains the string is configured to show the \codes attributes?

  • its ridiculous... I asked for the plan a month and cloud it recharges on a monthly basis and now when I try to cancel the membership that it does not show the desired option...

    its ridiculous... I asked for the plan a month and cloud it recharges on a monthly basis and now when I try to cancel the membership that it does not show the desired option...

    Cancel your membership creative cloud

    To the link below, click on the still need help? option in the blue box below and choose the option to chat or by phone...
    Make sure that you are logged on the Adobe site, having cookies enabled, clearing your cookie cache.  If he continues to not try to use a different browser.

    https://helpx.Adobe.com/contact.html?step=CCSN_membership-account-payment_cancel-your-memb ership_stillNeedHelp

  • I tried to roll back the last update of lightroom, but it says that it does not apply to me.  How to bring back the old version?

    I tried to roll back the last update of lightroom, but it says that it does not apply to me.  How to bring back the old version?

    Hi cherry_boy,

    6.3/CC 2015.3 Lightroom is now available - try to update to this version which includes the previous import feature, bug fixes and new support for photo/target device profile: Lightroom CC 2015.3 / 6.3 now available

    Concerning

    Pete

  • I said that I have to install Chrome to place an order at Walmart. What should the Chrome that Firefox does not work?

    I have placed several orders of Wal-Mart before today using Firefox without any problems. But today, nothing but problems. I tried for more than 4 hours, get this order to cross. I told cat line of Walmart and told me that I have to install Chrome to place an order. They don't answer when I asked if Walmart belonging to Chrome.

    I deleted the cookies and cache and restarted but none of this has worked. While Chrome has that Firefox does not work? I tried Chrome before and he hated and had a devil of a time he get off my computer. I don't want to go there again.

    I have attached a copy of the message that I get seems to indicate that it is a problem within Wal-Mart, but I said that it was with my browser.

    I have a laptop Toshiba Satellite running Windows 7 Ultimate 64 bit and using Firefox 40.0.3.

    Any suggestions would be greatly appreciated. Thank you.

    Thanks for your reply. I just figured out the problem.

    All started when I tried to pay my order at 13:00 this afternoon. I am persistent and don't give up easily. Five hours later, I found an error in their programming, which allowed me to add an item to my shopping cart that was a purchase in store only. But then when I went to pay for it, he became confused and wouldn't let me order but didn't tell me why.

    I solved by moving all items in the basket to saved for later and then add one at a time, trying to get to the car after each addition. It took a while because there are 20 items. He had the same problem when I added the item in the store to the cart and tried to pay for it. So I deleted and purchased on Ebay.

    Now I know probably as much if not more than any of their populations of the Chat line that can only be read on a book script.

    It's a relief that I don't have to use Chrome. I really like Firefox and would not change.

  • Yahoo page does not work. It seems that java does not work, but I have the latest version installed. Yahoo email page has all scrambled together all left links

    Yahoo page does not work. It seems that java does not work, but I have the latest version installed. Yahoo email page has all the links scrambled together on the left side of the page. Same thing with face book page. All use them to work properly. 64 Waterfox win 7

    Do not use waterfox, it is not supported and is a non-official version of Firefox that often has known bugs. Downlaod Firefox from www.getfirefox.com, uninstall waterfox, then try again.

Maybe you are looking for

  • Difficult to find the particular file in the firefox cache 8.0.1, there are two many issues.

    I am a user of ubuntu 10.10. I am a regular user of firefox. I used 3.6.18 for 1 year. Now I'm on version 8.0.1 improved but I am facing a problem. I am not able to find any particular file in the firefox cache 8.0.1. So, there are so many files is n

  • A60-672 where can I download Bios?

    I don't know what to choose in the "Family" section, when you select the bios download suitable for my Satellite A60-672. help needed please?

  • Installation of Zoo Tycoon

    I try to install Zoo Tycoon: Ultimate Collection. I get installed drive and are prompted to insert CD 2. When I do, I get the AutoPlay popup and can not get the disc to load. Any suggestions?

  • Security of Smartphones Gmail blackBerry BIS and gmail app

    Hi all I have a few questions on the application of gmail (probably not in the right place) and using gmail on BIS (native client for bb so). First of all I would like to know if the data I send bis thru using the configuration of the phone messaging

  • Cursor problem

    Hi, my cursor bounces around my laptop screen, it is very difficult to control with any type of mouse that I use (wired or wireless) and also through the fingerpad of. Both the same mouse work fine on another laptop. Jerrylin