CDAQ start task required?

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• Do you need 'DAQmx start task' vi read from a device NI DAQ (NI 9205)?

  I have a NI 9205, which I use to get a waveform data. To get started quickly, I used the wizard DAQ Vi. The code below (FIGURE 1) is the acquisition of data help VI looked like when I convert LabVIEW code and made some minor adjustments.

  When I looked online to see how to get hardware DAQ data, many sources use the task start DAQmx in figure 2.

  DAQmx start using VI makes another?  Materials using DAQ assist in loop gives you a lack of performance?    If so, figure a will have a lack of performance too as it is basically the DAQ help code?

  FIGURE 1

  Hello sticyfinger,

  Help for the Start Task function:

  "If you do not use this VI, a measurement task starts automatically when execution of the reading DAQmx VI. Automatic start of theDAQmx VI entry write determines if a build task starts automatically when the execution of the writing DAQmx VI.

  If you do not use the DAQmx start task VI and VI task DAQmx stop when you use DAQmx Read VI or VI to write DAQmx several times, as in a loop, the task starts and stops several times. Start and stop a task repeatedly reduce the performance of the application. »

  Hope that helps!

• Error-50103 occurred at DAQmx start Task.vi:11

  Hello

  I use a nor-6008 to perform a thermal sector and I get the error "error-50103 occurred at DAQmx Start Task.vi:11 '. I have read other forums of discussion and it seems combe because I use the wizard DAQmx who don't properly resolve the resource when finsihed. I've dug further and saw that it is linked to an on-board clock synchronization problems. However, I can understand how to solve this problem.

  I thought that I create a loop that continuously monitors inputs and sometimes to interrogate the memory so I'm not kidding to the top of the clock. It's much harder to do than sounds. Can someone take a look at my code and give me some advice/suggestions to clean the DAQmx assistants.

  Thanks in advance

  Cole

  I finished by dividing my resource between the two input channels using a single assistant DAQ and dividing down the data rate and the number of samples. Works fine now.

  Big pain in the ass well.

• Daq stop task VI back to the State of the task was really forward the DAQmx Start Task or DAQmx writing?

  Hello

  I use DAQmx and DAQ Assistant and try to get the details on the following questions.

  1 does Daq stop task VI really return to the State of the task is in front the DAQmx Start Task or DAQmx writing? Digital Input taking as an example, I don't think that the status of the task means that input data because I tried and I can't really back to the entry level it was.

  Maybe more experienced people can help to share their expertise.

  2. the information in help indicates "virtual channels created with the function/VI DAQmx create Virtual Channel are called virtual channels the and cannot be used in the task." But I don't know what "in his work" means.

  3. could I get some guidelines or expertise on the Labview programmers when use virtual channels the and when, to the more global?

  Thank you!

  Best regards

  Allen

  If you create a channel of the task, or scale just usuing the screw to create or Assistant session wire io is the only way to pass the info autour.  It is not saved anywhere on the disc.  A channel of the task or the scale in a project can be used by anything in this project.  A channel of the task or the scale recorded in MAX can be used by anything on this machine.  Its an extended thing.

  And Yes, the DAQ Assistant fresh extra performance overhead and the poor than the DAQmx API.  Often, it won't have the impact of a little experiment.  Large applications should avoid the express Visa.

• Press and hold Ctrl/Alt, then press on delete, and select Start Task Manager, and then the small black box appears and then disappears.

  Press and hold Ctrl/Alt, then press on delete, and select Start Task Manager, and then the small black box appears and then disappears.  How can I fix the Task Manager?

  Hello

  See if that helps you.

  "The problems of Task Manager.

  http://Windows.Microsoft.com/en-us/Windows-Vista/troubleshoot-Task-Manager-problems

  See you soon.

• VIRUS - black screen, no option for "start task manager" cant open anything

  Hey guys I've been on some * site and got a nasty virus. Here is a description of the virus:-black screen, can't see anything other than a small icon of a box of standard application, when I start in safe mode I get the words "safe mode" in the four corners as normal, but still nothing but black screen. -When I press ctrl + alt + delete it goes to the normal screen, but there is no option for "start Task Manager" it's all the other options. (happens also in mode without fail. - If I push the main Windows Start menu appears for a brief but disappears quickly, I can't click on what whether you or I see nothing other than this black screen with this small peak of an application.) I can't access the registry or run programs. What should I do? I tried to launch the win 7 pro install disc, but when I click on 'repair your computer', he says that this disc does not match your version of OS. I am running Win 7 pro 64 GB on a custom build computer any help would be thank you very much!

  Hello

  Thank you for writing to Microsoft Communities.

  I understand how it could be frustrating when things do not work as expected. Please, I beg you, don't worry I'll try my best to resolve the issue.

  I suggest you try the steps from the following link:

  How to remove a computer virus?
  http://Windows.Microsoft.com/en-us/Windows7/how-do-I-remove-a-computer-virus
  Note: this section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article: back up the registry in Windows 7
  Note: when you do an antivirus online, you will lose data that are affected by the virus. Microsoft is not responsible for the loss of this data.

  For the problem with the drive is not operating system, you may need to install Windows 7 Service pack 1. Uninstall the service pack so that you will be able to get the drive recognized.

  How to uninstall Windows 7 Service Pack 1 (SP1)
  http://Windows.Microsoft.com/en-in/Windows7/uninstall-SP1

  Hope this information is helpful and let us know if you need more assistance. We will be happy to help.

• Initiation of a process task requiring entries using API

  Friends,
  
  I'd do it to trigger a process of IOM outside task. I got the key of millet and key process instance.
  
  But this task requires certain mandatory entries. Can you please let me know how to get these entries to the method
  
  provIntf.addProcessTaskInstance(mil,key,processinstancekey);

  tcFormInstanceOperationsIntf API to set the value of the process form with the help of the key of the Process Instance. And then you can call the addProcessTaskInstance method

• cDAQ HAVE task using external clock

  Hi, I am trying to use a clock signal on a line of PFI in order to generate a clock, but at a lower rate, for a task to HAVE.  I run into many issues that I can't explain.

  I have a cDAQ-9172 with an entrance module analog (9225) in the Groove 3 and a digital input module (9411 - 2 MHz DI) into the slot 6 (where the PFI lines are accessible).  I want to use an external signal on et0/PFI0 to act as the clock for an analog input on the 9225 task.  This signal comes from the cDAQ anothr chassis and is too fast for the task to HAVE it, so I intend to use the time base entrance and the divider to clock (as shown on page 31 of the cDAQ-9172 manual).  See picture attached for a graphical representation of my problem.

  If I have the wiring from the signal "/ cDAQ2Mod6/PFI0" in the DAQmx timing VI, get the error 200414 saying that "required sample clock source is not valid."  It is strange because it is listed as "Direct route" in Max (the VI of polymorphic DAQmx Timing is configured as 'Sample clock') Q: why this route is not suitable for the task?

  If I use DAQmx Timing property node and change the Source 'Sample clock Timebase' to ' / cDAQ2Mod6/PFI0 ", the task starts without error, but the separation seems to be forced to 256.  If I try to change the properties of the separation of the time base, I get error-201100.  Try to change the 'sample clock rate"doesn't have any impact on the task and the remains of divider"256 ".  Q: why the 'Programmable clock divider"locked to 256 when using the PFI line or can you just not program directly?

  I came across another error is the minimum speed on the PFI line.  If I have the wiring (for the SamplClock Timebase) lower at 1 MHz, LabVIEW returns error-200077.  The error message indicates that the minimum value is 1 MHz.  9172 manual shows the clock 100 kHz is an option for the time base, certainly less than 1 MHz.  Q: What are the limits of upper and lower frequency for a clock signal on the line PFI for the ' Timebase AI/SampleClock "?

  I looked on the site and in the DAQmx documentation for further explanation, but I have been unable to explain these strange behaviors.  What are the barriers to entry of Timebase PFI and the time base "Programmable clock divider" preventing me to reach my goal here?  If I can't do it directly, can I use the PFIn signal to feed an internal counter (to act as the clock divider) which could then generate the clock WAS at the rate I want?  This method would allow me to perform a division arbitrary clock (unlike the ' 256', which seems to be forced on the PFI as a Timebase SampleClock.)

  Finally, something seems odd that I can make an acquisition to 10Sa/s max but when I start a task using an internal timers of the cDAQ9172 and ask a 10Sa/s rate, the task really gives me a rate of 1612.9 sample/s while using the 12.8 MHz clock and a divider 7936 timebase.  Q: Why can't the task to 10Sa/s?

  I use DAQmx 9.7.0 and LV2012 SP1 (and I tried with 9.7.5 but I got the same results)

  Thank you

  Olivier

  I got additional help Friday in another engineer at NEITHER and the solution to my original problem is actually very simple to get the clock from an external source path:

  

  The idea of picking a PFI line for the basis of 'time' and the 'Programmable clock divider"(in fact, DAQmx calculate this number based on"HAVE sample time clock"and"Sample clock HAVE") works by using the node property below:

  

  (SampleClock.Source cannot be resolved until the task is clerks/reserved, but the default option seems to be the time base that works well in this case.)

  The question that I described earlier with the 9225 comes the module properties and the fact that it is a "Module of Sigma - Delta".  That the module usually generates its own time of 12.8 MHz base clock (page 14 of the document 9225 # 374707) and the clock divisor is much less possible values than the other modules (must be a multiple of 256). It may use a different time basis from a PFI line, but it must be between 1 MHz and 13.15 MHz.

  So a main clock between two chassis and tasks running at different rates of sharing should be easy and simple with most of the modules.  With AI modules with Sigma-Delta converters add additional limitations and the master clock for the time base frequency must be selected to accommodate these module as well.

  Another good news is that the Simulator seems to bear all these details and DAQmx (9.7.0 in my case) generates the same errors when you use a simulated chassis if you use real body.  Play well!

• Error-200022 occurred at DAQmx start Task.vi

  Hello

  I have peripheral cDAQ and 3 modules that nor-9234 connected.

  My program (see attachment) works correctly with only 2 modules, but does not work with 3 modules.

  With 3 modules I have this error: "error-200022 occurred at Task.vi DAQmx Start.»   "Possible reasons: resource requested by this task has already been reserved by another task."

  To solve this problem, please help me

  Thank you

  Now I understant the error. This is correct (see below)

  

• When it is run Sysprep and Capture task requires user name and password and won't restart

  MDT 2012

  I have a Windows 7 reference image.  I should be able to start on this OS, map a drive to the scripts directory and run litetouch and select my task "sysprep and capture.  When I run that he just ask a local username and pass and don't restart or ask where I want to put my image.

  I also run sysprep manually and PXE-started and ran the task but same result.  A few dialogs that require local administrators and passowrd but never a location to copy the image from.

  When I created the sysprep and capture task, she prays for a picture that is strange.  why he poses for a picture when the sysprep and capture task is intended to create an image.

  Your question is the best answer in the IT Pro Forum: http://social.technet.microsoft.com/Forums/en-US/w7itproinstall/threads

  J W Stuart: http://www.pagestart.com

• Error to Start Task.vi DAQmx 200120

  Hi all

  I am creating a task entry and exit on two different lines of the same Port. When I do this in the measurement and Automation Explorer, the port works very well with the input and output lines, but when I do it by programming in LabVIEW, I get an error in the Task.vi start DAQmx.

  

  I'd be happy if someone of you could let me know why this is happening. (As the code should be kept confidential, I can't provide the screw )

  Kind regards
  Nitz

  Nitz,

  You see this error with which camera?  Most of the more recently designed devices (M series, X series) allow digital to be configured individually.  However, some devices that were designed more there only support with configurable port.  This would be true for PXI-65xx devices or material of the E series.

  Hope that helps,

  Dan

• Icon start Csn can't access menu or the start task bar, someone does something to my office, help!

  I'm helping a friend on his computer because someone got on the subject and created a strange wallpaper and now she can still access the icon start or the bar menu or the task to start on the desktop.  I tried to delete the .gif picture in the photo gallery of window for her, but she says that she has not yet access now to dellete a small little .gif who was transformed into a pervasive wallpaper. I'm not knowledgeable enough to know how to access these things without clicking on things I know.  I hope someone is still in place and can help.  It's 12:15 it in Scottsdale, AZ.

  Hello
  Your friend computer is probably infected with malicious software. Try following the steps in this virus/malware removal guide: http://www.selectrealsecurity.com/malware-removal-guide/
  It provides simple instructions on how to remove malware from a computer. If you have any questions, just ask. I hope this helps you.
  Brian

• completed the explorer.exe process and also can't start Task Manager

  Hi, I have a Toshiba Netbook, in which I inadvertently done the explorer.exe program, and now I can't even start the Task Manager because the keys ctrl + alt + delete does not work, and I can't turn off because it has been set to mode standby mode when it is turned off!

  Press and hold the power button for 8 to 10 seconds.

• Ctrl + alt + delete: instead of a menu of auto start Task Manager?

  I was wondering how to do ctrl + alt + del open Manager tasks immediately instead of a menu to open upwards and then having to choose the Task Manager.

  Thank you.

  Hi Brian.

  It seems to me that you have disabled the Welcome screen at first upward.  You can check this by going to the "Start" menu and then go to 'Control Panel'.  Click on "User accounts" and then click on the option "Change the way users log on and outside."  You should now see two options.  The first is "Use welcome screen" and, with your current explanation, that has a checkbox that is empty.  Click the checkbox to enable the Welcome screen, then exit to the desktop, and then restart your machine.  After reboot, you should then see the Welcome screen with a list of all users. (If more than one.)  Sign in and then try Ctrl + Alt + Delete.  The task manager should now appear.

  If you think that my answers are useful please vote and mark as a possible answer. Thank you.

• computer crashes with no menu or the start task bar

  my system hangs when booting with icons and wallpaper to the top, but start menu or task bar. You can highlight the icons but not open any.  If you double-click you can highlight all other icons. also if you move the taskbar, the hourglass appears. About 3 weeks ago, I had freezes and removed with 1 user account and everything worked fine. Now, it started but I can't really start now the keyboard commands do not work. The system is new.

  Any IDEAS?

  Hi hvactech2,

  It looks like your system may be infected, see if you can get into Safe Mode first and then let me know.

  --> I hope this helps! Please vote or mark as correct answer if it doesn't :)<>

  http://www.pcuk.biz - my Web site | http://www.systems-and-solutions.co.uk - where I work

  
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