DAQmx - create channels to channel-not found

Similar Questions

• Error-200431 occurred at .vi DAQmx Create Channel (I-acceleration-accelerometer)

  Hello

  I tried to use DAQmx Create Channel to accelerometer and yet it responds with error (see below). When I use max OR to measure the accelerometer (I-acceleration-accelerometer), there is no error, and I see that acceloremeter works.

  OR PXI-1042 and I use OR-4462 card to measure vibration vith acceloremeter.
  

  Error-200431 occurred at DAQmx Virtual Channel Create

  Possible reasons:

  Physical channel selected does not support the type of measure required by the virtual channel you create.

  Create a channel to a type of measure that is supported by the physical channel, or select a physical channel that supports the type of measure.

  Property: I. MeasType
  Requested value:
  You can select: sound pressure, voltage: Microphone, accelerometer, Position: Eddy Current proximity probe, Force sensor: IEPE, speed sensor: IEPE

  Task name: _unnamedTask<104>

  Hi serdaryilmaz,

  I'm not sure why the accelerometer mode does not work, but it works very well in normal mode - it maybe has to do with the accelerometer, you?  Whatever it is, if it works with the voltage mode, I am happy that we found a way to make it work.  Is this an acceptable work around you?

• Possible bug: DAQmx create channel w/o specified in task

  The VI DAQmx 'DAQmx create channel (I-voltage-Basic) .vi' requires no task should be connected, and claims his detailed help "" task in specifies the task to add virtual channels, this VI creates. "." If you do not specify a task, NOR-DAQmx creates a task for you and adds the virtual channels that this VI creates to this task. »

  My recent experience, I think that there is a problem with this feature. If no job is specified, sometimes this VI will create a new task without problems, but other times it will overwrite an existing task, causing errors later when you try to reference the crushed tasks.

  In my code, I have 7 tasks, two digital (DIO), an analog to (HAVE) and four analog out (AO). One of the AO and the tasks of the AI does not use a task VI before the channel VI create. I recently added this AO task without creating a new task manually, based on the reproduction of legacy code for the channel of AI that also not create a new task. With two spots missing the task of creating VI, I found it fairly common (20% of the tracks) a further task would be crushed, causing errors when the task has been used, either be the wrong type IO, a wrong number of channels, etc. I think I saw this error until I added the second task without creating a task, but it's so rare that he didn't pay much mind, and I would just restart my VI. Now that was occurring more often, I've been tracking it. Simply by adding 'DAQmx create Task.vi' before calling Create Channel and the new task of wiring in the task, the problem seems fixed.

  It is easy to add to create a task to avoid this problem, but it seems to me that the detailed help for Create Channel indicates that it is an unnecessary step. Thank you.

  Hi MDI - AJT.

  This looks like a problem with the code you posted, by suggestion of Norbert. When you create the task handles, you should do this only at the beginning of your code outside the loop, otherwise you will create errors that you overwrite memory locations at each iteration. If you move your virtual channel calls create outside of your loops, and does not call the handle of the task to be authorized beforehand (and implicitly create the task rather than explicitly), then this behavior must stop.

  I recommend to try this with a single line, and not 7 DAQmx calls and follow the DAQmx architecture as seen in the examples under 'Help' "'find examples' and see if this behavior persists. Later architecture, I was not able to re-create this behavior.

  BeenCoughin

• What channel DAQmx property corresponds to "name" entry "DAQmx create Channel.vi?

  Hello people,

  I am changing a program, I have inherited so that it uses DAQmx virtual tasks rather than have the task and the channels created by programming of in the code.

  In the existing code, the entry 'name' on the 'DAQmx create Channel.vi' is wired with a value.  When you use a virtual task DAQmx, I do not use the 'DAQmx create Channel.vi', but I still want to set the values of the "name" in the code with the help of a property DAQmx node.  However, I can't find a property called "name".  Such a property exists with a different name?

  Best regards

  Chris

  
  

• Satellite A660/P07: Tuner TV - some channels not found

  Hello

  I need help please tv tuner. -"No channels were found.

  Buy Toshiba A660/P07 laptop with TV tuner on the weekend.
  Running Windows 7 64 bit OS sound Toshiba installation set-up fees.
  Connected online and installed all Windows updates.

  However cannot get any TV signal on the laptop.

  When you use Win7 Media Center - after after installation
  [http://www.mytoshiba.com.au/support/item/226]
  The result is "* some channels not found *.»

  1 - is anyone know how to get the functioning of the tuner? am I missing something basic?
  2. what someone has an A660/P07 and I can confirm that the tv tuner works in Windows 7 Media Center?

  Thanks in advance,
  Oleg.

  _Here's what I've tried: _

  1 tested antenna/cable. The antenna works very well with a normal digital Panasonic TV and an old Analog Tv.

  2 followed FAQ How to install tuner in the press room
  http://www.MyToshiba.com.au/support/item/226
  -Region: Austrlia
  -J' tried to digital, analog signal.
  -Tried to add manually analog and digital channels

  3. I tried the turn off/on tv tuner driver.
  4. tried to uninstall/reinstall the tv tuner driver.
  5 tuner driver Tv is the last updatev2.3.3.31 that no newer version exists of Toshiba or Microsoft.
  6 installed latest BIOS update v1.60
  7. tried with other MediaPortal TV tuner software. result: no signal of any channel
  8 tried all above on the two versions of 32-bit and 64-bit Win7, still no tv signal.
  9. I'm back for Win7 64 bit fresh install with no tv signal

  Its possible that your antenna is not compatible digital. Are you able to try another antenna?

  If its does not work with a good known antenna that can capture digital channels, the antenna socket itself may have a problem.
  You will need to send it to an ASP for repair.

• Error-200431, DAQmx create Channel .vi (I-voltage-Custom with excitement)

  Where is past ".vi DAQmx Create Channel (I-voltage-Custom with excitement)?

  I tried to use this VI of force measurement with an NI PXI-4472. He responds with the 200431 error... You asked: more: voltage: Custom with excitement, you can select: sound pressure, voltage: microphone,...

  It seems to me to be an internal error of the VI's Version of LabView 8.6.1

  Hi Suse,

  Thanks for your reply.

  It's the right device but the bad VI.

  PXI-4472 is an excellent camera for the dynamic force measurement using Quartz sensors. I was intending to use the .vi (I-voltage-custom with excitement) to configure entry and IEPE excitement, but I got the error code. I have now managed by using the pure (I-voltage) .vi entry configuration and IEPE using the DAQmx channel property node.

  However, I tried the .vi (I-voltage-Custom with excitement) with appropriate PXI-4220 simulated device, no error.

  Concerning

  T.Knox

• If I replace the control with another why DAQmx create channel once complain a false claim?

  I tried to replace the frequency by another control in the example found here complete PWM:

  http://www.NI.com/white-paper/2991/en

  However, I get the following error message:

  

  Possible reasons:

  Requested value is not supported for this property value. The value of the property may be invalid because it is in conflict with another property.

  Property: CO. Pulse.Freq
  Required value: 0.000000
  Valid values begin with: 22.300000e - 309
  Valid values ending with: 20.0e6

  Channel name: Dev1/ctr0

  Task name: _unnamedTask<10>

  My wiring diagram looks like this:

  

  If I cancel my change (i.e. I have remove the frequency control knob and turn it over to the control of the example, it works perfectly.)  I get the waveform is displayed in the oscilloscope.

  My goal is to simply use a frequency and duty cycle control knob.  How can I achieve this?

  There are two things to do.

  What I think you did now changes the scale of the handle.

  You will also need to change the values that are allowed to enter. You will do on the data entry tab in the dialog button properti.

  Uncheck the 'use default', the Minimum value limits and Maximum identical to your balance.

  Value "Response to value out of range" Coerce to both Minimum and Maximum.

  I hope this helps.
  Let me know if you have more problems.

• Synchronization of HAVE several devices in the PXI by the Sub - VI of DAQmx create channel

  Hello

  There are two PXI-6123 cards in the slots of the PXI-8109, and then I would acquire the simultaneous analog input signals.
  The manual of the PXI-6123 recommended with a common time as a master Timebase and base to the slave devices.

  However, I wonder if I can take advantage of the method as the accessory, including all channels to HAVE the devices in the physical channels to create.

  Does it work? How can I know what are the "some data acquisition hardware OR" in the passage of the attachment?

  Hello

  Please refer to this KB: http://digital.ni.com/public.nsf/allkb/78E44565FD87E7D686257108007F94F8. I think that you are good with your two PXI-6123 devices, if only you DAQmx 8.1 or later installed. If please come back and let us know your test result.

  Thank you

  Phil

• Win7 Ultimate Media Center Edition. Two channels ATSC displays only when I hit 'Record', otherwise 'channel not found', full strength 5 bar

  In the Seattle area, when I tune the channel 7.1 and 7.2 in the settings of signal strength, I still see 5 bars. It's the local affiliate CBS, KIRO.

  I have a HVR2250 dual tuner PCIe Hauppauge tuner card which has worked flawlessly for about a year. The drivers are current, 8851 dated June 2013. He also runs the current WinTV7 version 2. 8A. I do not use the Hauppauge app generally and it's not usually loaded with the exception of the tests. There is no shows at the request of record with WinTV7, although I could test records programmed successfully using this application.

  When I adjust the Guide, or by browsing the channels, MCE says no signal received 7.1 and 7.2.

  When I adjust everything first to one of them in the 10-15 seconds avant-erreur MCE 'no signal', if I reached the record, the channel is immediately blocked, including digital video and audio Dolby, and the program starts recording. I can stop recording, and as long as I don't change away from this channel, it remains fully functional with clear reception.

  I'm on a hill and have the correct line of the broadcasting antenna site about 12 miles away. I can also have this channel without problem on WinTV7 app by Hauppage, and setting my Samsung tuner screen, indicate both maximum resistance.

  The biggest problem is that the series on the logging sometimes channel show "available channel", and does not record successfully. If I manually start recording, it works every time.

  Is there any settings I can adjust to decrease the sensitivity required in MCE?

  Hi Scott,.

  According to the above mentioned the question on the Media Center, I have some suggestions for you so that you can go ahead and try see if this can help you.

  Method 1:

  Try the steps as indicated by "Cliffskier", who responded on 24 September 2012 in this thread:
  http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-pictures/Media-Centre-unable-to-to-watch-live-TV-but-can/3f093264-A811-4106-81d6-75e6434c1aad?page=2

  Method 2:

  Try us to update or download the list of guide for the media center. While we ensure that we have the list of guide updates and channels. After completing the above step, then try to search for and implemented.
  http://Windows.Microsoft.com/en-us/Windows7/use-the-guide-in-Windows-Media-Center

  For more information:
  http://Windows.Microsoft.com/en-us/Windows7/record-TV-in-Windows-Media-Center
  http://Windows.Microsoft.com/en-us/Windows7/watching-TV-in-Windows-Media-Center-frequently-asked-questions
  http://Windows.Microsoft.com/en-us/Windows7/TV-signals-that-are-supported-by-Windows-Media-Center

  Hope this solves the problem. If the problem persists, you can write back to us information and we will be happy to help you further.
  Thank you.

• error-229771 DAQmx create channel (AO-tension-Basic) .vi:3 &lt; append &gt; &lt; B &gt; task name: _unnamedTask &lt; /B &gt; &lt; 0 &gt;

  Hello!

  I have a PCIe-6259 and BNC-2110, and I got this error. It worked until this summer, but not now...

  THX,

  Gaël.

  I restart or config in the work of MAX and it's now.

• 88302 error occurred at .vi:1780001 DAQmx create channel (I-voltage-Basic)

  Hi all. I'm new to the Forum so if I leave aside any improtant info please forgive me. I try to enter a NOR-DAQ sensor voltages, but the 88302 error keeps popping up when I run the vi. I took screenshots and circled the blocks which throw errors. I have attached the screenshots and the vi. I tried restarting my computer and NEITHER-DQA. I should also mention that I am using LabVIEW 2013 Version 13.0f1 (32 bit). Any help would be greatly appreciated!

  It turns out that some drivers on the computer have been updated and the latest version did not support some of our old stuff. The old drivers have been resettled, and the error went away.

  -Chris

• DAQmx (Version 9.1) Create Channel for accelerometer will NOT convert m/s ^ 2

  I use DAQmx create channels for accelerometer to get results in the unit (m/s ^ 2)

  It worked until DAQmx Version 8.9.

  Now, I tested it with DAQmxVersion 9.1 and the results are in g (not converted to m/s ^ 2!)

  I use wth .vi DAQmx Create Channel (I-acceleration-accelerometer) entries

  units = m/s ^ 2

  sensitivity units = V/g (there is no sensitivity unit V /(m/s^2) available)

  sensitivity sensitivity value in V/g =

  I have read the data with

  . VI DAQmx reading (analog 2D DBL NChan NSamp)

  In DAQmx<= 8.9="" the="" double="" numbers="" are ="" correct="" converted="" to="">

  but in DAQmx 9.1 not (values are in g and low by 9.81)

  My solution is the following change

  units = g

  sensitivity units = V/g

  sensitivity = sensitivity value in V /(m/s^2)

  Then the double numbers are not converted, but m/s ^ 2.

  And this work in all versions of DAQmx.

  The problem is:

  An older program that uses the settings of the first and tested with DAQmx<=8.9 will="" get="" wrong="" measurement="" result="" with="" daqmx="" 9.1="" and="" no="" error="">

  Peter

  Hi Peter,.

  I'm not in my office at the moment and I can't try it by myself, I have forwarded your request to one of my colleagues, I hope he will contact you soon.

  Sorry for the delay,

  Tobias

  The language of MAX settings depend on the regional settings of your Windows operating system. See the following page:

  http://digital.NI.com/public.nsf/allkb/9893C1767C93D20E86256F49001CDA92

  Kind regards

  Tobias

• DAQmx create virtual channel (VI) error-229771 reports

  Hello

  When in a project that I am working to get error-229771 code whenever I try to run 'DAQmx create Virtual Channel (VI)' this does not happen when I create a vi not in a project.  The problem is that this project is very large and it if poster impossible to recreate. It's several hundred vi. Y at - it something that I missed in the forums and support that could explain this. I created the VI below in the project and outside the project. In the project, the error occurs outside the project, it runs without any problems.

  Message:

  229771 error occurred at .vi:1780003 DAQmx create channel (I-voltage-Basic)

  Possible reasons:

  Internal software error has occurred in the MIG software. Please contact the support of National Instruments.

  Task name: _unnamedTask

  Any help would be appreciated.  Thank you, Matt.

  LabVIEW version: 15.052(32bit)

  OR Max Version: 15.0.f0

  NEITHER DAQmx Verson: 15

  OS: windows 7 service pack 1

  PC: Intel Core i7-2600, 8 GB of ram

  Data Aquistion: NEITHER DAQ USB-6289 calibrated June 2015

  This code snippet returns the name of the first channel of analog input on the device first, and then tries to create a task for her. The bed of the canal, then close the task.

  

  Error message

  

  Hi Matthew,

  Thank you for following up after you fix your problem.  I'm glad to hear that you do not encounter this problem more.

  Here is an article that lists the reasons for this error (although unfortunately, I cannot pin down which is the exact cause in this case).

  http://digital.NI.com/public.nsf/allkb/03123D0E8A36C48E862577A4005B6BAA

  NOTE: This article specifies that the error occurs at startup task VI DAQmx.  You do not use the start task VI, so the task starts automatically in the DAQmx Read function.  The error will occur instead in the DAQmx virtual channel create, that you encounter in your error.

  I hope this gives you an idea about what could have gone wrong, and I'm sorry he is no more details.

  Good programming!

• generation of functions to create channels of AO

  I'm trying out a sinusoidal signal through a USB-6211 using this task Create Channel. I can't find a single example of using this function once the task has been created. All the 17 examples provided by OR use the adjustment of the tension of the AO create and must use an external function generator. Examples exist on how to use this thing? List of specifications of USB - 6211 BTW ' AO waveform modes:

  "Non-periodic waveform.

  "Periodic regeneration mode waveform of FIFO aboard"

  'Regeneration of periodic signals of buffer host, including the dynamic update'

  I don't know what the previous alternatives that seem to indicate that it is capable of producing waveforms, unlike other queries that came during my search for previous question.

  Hi walter donovan,.

  Only two devices support .vi DAQmx Create Channel (AO-FuncGen): NI ELVIS II and NI ELVIS II +, which have a function dedicated to the hardware level generator. You cannot use the channel type of the generation of AO functions with any other device. Sorry for the confusion.

  Brad

• PDF file not created not, not found the police, very error.

  I was printing a map of gogle maps, but instead to create a PDF file, it created a file of notes that had, not created PDF file, fonts not found, error very.

  This problems hapends just once and everything works fine now. But I would like to know what happened.

  Thank you.

  I found the problem and is that internet explorer is tryng to create a very when I print a web page. When I print a page in the image appears

  the characters that the ie is trying to solve. Do you know something?