USB-6289 DAQmx delay early in the program

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  I have the task of counter DAQmx which "hangs up" while troubleshooting a VI and does not restart when I restart Traoré.  See attached fragment VI.  The counter works reliably in normal operation, but some combinations of interruption and running "highlighted" causes to stop work.  It's in LabVIEW 2009.

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  This significantly slows the troubleshooting.

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  See this page to select your language:

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  ====================================

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  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

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• Runtime error example NOR-DAQmx ANSI C in the Windows 7 virtual machine

  I am under a guest Windows 7 system with a host of Ubuntu 14, using VirtualBox and have encountered a problem running even the simplest examples provided by National Instruments, using the ANSI C API for NOR-DAQmx.

  The first time that the DAQ hardware is turned on, I can run a single measure, and after that, any other indicator displays the following error message:

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  Corresponding Value: DAQmx_Val_CurrReadPos
  
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  Corresponding Value: 0
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  The exactly the same setup, same version of NOR-DAQmx (9.7.5) and running on Visual Studio 2012 smoothly on a computer that is running Windows 7 directly.

  I suspect that the problem is with the internal buffer being somehow messed up because of the connection with the Virtual Machine, but do not find an elegant solution to fix it.

  The camera I use is NI USB-6289.

  Hello fromm8

  Thank you very much for your help, I managed to locate the problem.

  He was not the actual code, or something like that, it was a problem of communication between the VirtualBox machine and the physical device.

  Kept launches MAX test panels a comparable as error the program C.

  I fixed the problem by opting for VMWare, which seems to have the best compatibility with USB devices.

  See you soon!

• synchronize two usb 6289 with a meter

  Hi people!

  I'm trying to synchronize 2 boards of the series M USB-6289 using a counter.

  I searched the forum and that you've already seen the tutorials:

  'Synchronization of series M with LabVIEW and NOR-DAQmx - Developer Zone - National Instruments'

  'Synchronization of data acquisition USB - device to several systems - Developer Zone - National Instruments'

  "The time and the synchronization of the NOR-DAQmx - Developer Zone - National Instruments features."

  However, I still have some doubts (where the post with respect to the following:)

  -If I want to use the meter as trigger for both cards do I need to export to a PFI line and connect to the Member of the Board?

  -I do the same thing with the clock signal (export to the other panel using a PFI line) or using the same frequency for two meters is enough? Or both?

  -can I use the same value for the frequency in the meter and two clocks?

  Hope someone can help out me.

  If possible, underline some examples or detachment would be great.

  Thanks in advance for the help!

  See you soon!

  Hello

  All points depend on what you need to synchronize exactly.

  As you have probably already read in the links you provided, you have the option to share a trigger, or a clock, or both.

  Of course, the best solution is to share together.

  Then, you can choose to directly share the sample of one blade to the other clock (if the two sampling rates are the same), or to move the reference clock, then, both cards will synchronize their sample (with PLL) clock on the same reference clock, as shown in the synchronization M with LabVIEW and NOR-DAQmx series.

  Exactly how you want to use your meter?

  You want to generate a single trigger pulse?

  Then, for examples of synchronization, there are some zip files at the end of the links that you have read.

  Kind regards

• USB-6289 digital output signals setting

  I use a USB-6289. I am writing a CVI application that uses this device. I need to put the digital i/o pins as outputs. In the CVI app, I know I can create these tasks with the tools-> create/edit DAQmx tasks. He created this:

  Int32 CreateDAQTaskInProject(TaskHandle *taskOut1)
  {
  Int32 DAQmxError = DAQmxSuccess;
  TaskHandle taskOut;

  DAQmxErrChk (DAQmxCreateTask ("DAQTaskInProject", & taskOut));

  DAQmxErrChk (DAQmxCreateDOChan (taskOut, "USB-6289/port0", "))
  "DigitalOut", DAQmx_Val_ChanForAllLines));
  DAQmxErrChk (DAQmxSetChanAttribute (taskOut, "DigitalOut", DAQmx_DO_InvertLines, 0));

  * taskOut1 = taskOut;

  Error:
  Return DAQmxError;
  }

  So this it puts in place but not to write the data. My question is what is the command to write the data?

  Also I was wondering if the code source of any example that shows how these commands are made? Is it possible to configure the bits individually? I only need to use 5 of these pins as outputs so t would be coll if I could write that the bits D0 - D4.

  Are there documents written on these commands and how they are used?

  Thanks in advance

  A DAQmxWrite writes the data.

  Go to help > examples > material input and output > DAQmx > digital generation.

  If you specify the lines instead of a port, you can use as the number of bits you want.

  First glance using the ICB.

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  AdapterDeviceID: 0 x 6720
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  Modules: %7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:31.3.0
  BuildID: 20141127140543
  CrashTime: 1419384832
  EMCheckCompatibility: true
  EventLoopNestingLevel: 1
  FramePoisonBase: 7ffffffff0dea000
  FramePoisonSize: 4096
  InstallTime: 1419372200
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  ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6}
  ProductName: Thunderbird
  ReleaseChannel: press release
  SecondsSinceLastCrash: 22
  StartupTime: 1419384814
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  Version: 31.3.0
  useragent_locale: en-US

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