Samples buffered not updated in the loop For

Hello.

I'm having some trouble with DAQmx Read.

I have 2 cards USB 6509 making a digital output to solve some multiplexers and I want to measure differential voltage

using 2 boards of 6255 USB. I have a sample clock shared for 6255 boards through a PFI line. Unfortunately

6509 boards do not allow for the synchronization of hardware I can say.

So, to synchronize the functions I used a flat sequence to ensure that multiplexers are processed before acquiring the data of voltage

and as you can see on the VI (LabVIEW 8.6) I use a loop to run 16 iterations and build a table with these data.

The problem is that sometimes I get is error 200287 or 200010. And when I don't get an error, the data of 16 iterations

is the same and it is incorrect because I'm monotoring the data to enter into the 6255 boards using a multimeter and data do not match.

I seems to me that the analog input is read-only data iteration and I can't understand why.

Also this VI takes a long time to run and it freezes for a few seconds on a few iterations.

Can someone take a look at the VI and enlighten us please?

I'm really stuck on this part.

Thanks in advance.

See you soon.

Rui

Rui,

Well-that the code has sufficient space to improve performance!  Other than samples obvious to read the error that was made out, I recommend:

  • Use "master of task.vi" to commit the task before starting the loop - as you have tasks enter the loop 'unverified' and so for each iteration tasks are verified, reserved, committed, started, stopped, no committed, without reserve and unverified. That's a lot of unnecessary work behind the scenes!
  • Do not pass 30000 as a sample to the slave task rate HAVE read the actual sampling frequency of the main task of a task property node and pass a LARGE value this actual sampling frequency to the task of the slave (sample rate can get under duress and you cause a bit of a problem)
  • Bring your constants out of the loop, that the 8.6 compiler doesn't have some of the modern optomizations available for reading constant each iteration is frowned on
  • Check your version of DAQmx.  You want more 9.1 to avoid the bug of the autostart.

Tags: NI Software

Similar Questions

  • Seen the problem by updating in the loop For

    Hi gurus,

    Your help is greatly appreciated...

    IAM having three documents I need to put INTERNET_ID, COMM_SEQ_ID based on the column of ID. I started the coil and found that his single status update where the sys_falg = ' and 2 records that have a null value its not updated.

    Here is the data in the table...

    IDINTERNET_IDCOMM_SEQ_IDSYS_FLAG
    VKKR25D
    VKKR25
    VKKR25

    IDINTERNET_IDCOMM_SEQ_IDSYS_FLAG
    AD10017D
    AD10018
    AD10018

    FOR APP_CUR IN (SELECT ID, INTERNET_ID, COMM_SEQ_ID, SYS_FLAG
    PROD. ACCESS_INFO where id = 'AD100.
    )
    LOOP

    UPDATE PROD. ACCESS_INFO
    SET INTERNET_ID = APP_CUR. INTERNET_ID,
    COMM_SEQ_ID = APP_CUR.COMM_SEQ_ID
    WHERE TERMINAL_APPL_ID = 'VKKR.
    AND DOWNLOAD_SYS_FLAG = APP_CUR. DOWNLOAD_SYS_FLAG;

    nCount: = ncount + sql rowcount %;

    END LOOP;

    Of the coil, I see that only one record is updated. Please help me here if I'm missing something here.

    Hold file:

    BEFORE THE UPDATE

    550VKKR 2 5 V

    2 5 550VKKR

    2 5 550VKKR

    NO UPDATED RECORDS: 1

    AFTER UPDATE

    VKKR 1 7 V

    2 5 VKKR

    2 5 VKKR

    Decode (DOWNLOAD_SYS_FLAG, APP_CUR. DOWNLOAD_SYS_FLAG, 1, 0) = 1

  • channel and sampling rate is not updated until the next cycle

    Hi all

    I'm new to LabVIEW and I wrote the code for the measurement of temperature using the cDAQ-9178 or NI 9214. Could someone please look at my code and help me understand why... my names channel to sample and rate update, until the next time I run my program.

    For example: if I enter the name of the channel "ONE" and "10" sampling frequency... and draw my program will be executed using previous information entered by the user. If I press the race a second time, then it will use the '10' sample rate and channel "ONE". Everyone can't see what I did wrong? I know that my code is absent, but she does everything that I need, except for the update.

    I really want to use a structure of the event, but failed miserably in my attempts. Thank you

    Stream.  Updates the values in your Subvi are run in parallel to the Structures of your event.  The simple solution is to simply put your update of the values inside the event.  In this way the controls are not read until you actually press the next button.

  • I could not update or install applications for weeks, so I disconnected my Apple ID and rebooted the phone but now I can't reconnect! The error is: unable to connect to the iTunes Store. I should w8 for ios10 and hope that it will be fixed by the new ios?

    I could not update or install applications for weeks, so I disconnected my Apple ID and rebooted the phone but now I can't reconnect! The error is: unable to connect to the iTunes Store. I should w8 for ios10 and hope that it will be fixed by the new ios? Cause don't want to reset my phone.

    You have tried: If you can not connect to the iTunes Store - Apple Support ?

    And I tried to do a soft-reset/reboot the phone?

  • I have the time to default iPhone 4 iOS 7.1.2 iPhone App not updated since the last 3 days and also checked all the settings for location and also set as new iPhone always present problem... Please try to fix... Thanx

    I have the time to default iPhone 4 iOS 7.1.2 iPhone App not updated since the last 3 days and also checked all the settings for location and also set as new iPhone always present problem... Please try to fix... Thanx

    Turn off your device and turn it on again. If this does not help, sign out of your account and reconnect.

    In addition, you can try to reset your settings.

    • Press and hold the sleep/wake button
    • Press and hold the Home button
    • Press and hold both buttons until the display turns off and on again with the Apple logo on the subject.

    Alternatively, you can go to settings - general - reset - Reset all settings

  • The new update with the Patch for Camera Raw does not work. Code U44M1P34

    Hello

    I have a problem with the new CC update - including the patch for Camera Raw 8.7.1

    Error code: U44M1P34

    Photoshop CC (2014)

    After Effects CC (2014)

    Brisge CC

    The log file shows 1 fatal error:

    FATAL: Payload ' Photoshop Camera Raw 8_8.7_AdobeCameraRaw8.0All 8.0.0.22 with a number that follows.

    I tried to uninstall reinstall. Did not work at all, because the same problem appears.

    I have not installed in other folders. All other updates worked - but not this update. The problem seems to bee only caused by the Camera Raw update.

    Are there other people with the same problem? Any ideas?

    Thanks in advance and greetings,

    Joerg

    Hi Jeff,

    It seems I found a dirty solution, but work for my problem on this site: Getting fatal exit Code 34 when installing an application

    To change these 3 names of folders and reinstall my programs worked fine without error:

    Adobe PCD-> Adobe PCDold

    backup-> backupold

    Caps-> capsold

    Now, the programs are on the actual status with all the updates that are included and everythings looks fine.

  • Value of the loop 'For' pass before the complete loop - FPGA

    Hello

    8.5 LV, LV FPGA, PCI 7831-R FPGA Board

    I got a cramp of brain on this one.  I have a function (Arb. GIS read) that Im using to generate an arbitrary signal which I created in memory.  I can't move to the value of data however.  I don't know why I can not, its because it is nested in a "loop For" who runs indefinetly and updates only the value whenever it loops back to 'zero '.  Ideas quick and dirty on how to use this value as it is being updated in the loop in my hand vi?

    I've seen messages on the use of local variable 'Files' and property nodes, but I can not just give a sense the.  Maybe because it's FPGA, something is different/no supported?

    * My principal is 'control MicroMirror Arb. SP", look in the #4 case and the condition of"false. "

    The 'Sub - VI' is called 'Arb Sig read RevB', and I'm trying to pass the variable 'Data' to hand while the loop For always runs.

    Thank you!


  • Not pulling not updated on the Server internal Flash

    Hello

    Two years, I configured an internal server to distribute Flash updated to Windows endpoints. It works well, until he appears, this month of May.  My end points are so stuck on 13.0.0.214. If something has changed

    Check that I did:

    1. update script on the server always pulls files. Destination folder indicates v14 has been downloaded

    Pulling the version.xml from the update server to update internal (via https) confirms this.

    For info:

    < version >

    "" < ActiveX major= "14" " minor="0" buildMajor="0"" buildMinor= "145"/ >

    "' < Plugin major="14"" minor= "0" buildMajor= "0" " buildMinor="145"/ >

    "" < MacPlugin major= "14" " minor="0" buildMajor="0"" buildMinor= "145"/ >

    "< SAUConfig checkFrequency="1"/ >"

    < / version >

    2 CNAME 'flashupdate' is always in the DNS system

    3 domain wildcard cert is valid and linked to HTTPS such that I get no warning of the cert when you browse the internal update server https://flashupdate.domain.local (IIS 7)

    On an endpoint, here is a sample flashinstall.log (could not find the error codes mean!) for about the last 30 minutes. I used FlashPlayerUpdateService.exe to start manually.

    2014 7-9 + 14-45 - 44.830 [info] 1628 flashupdate.domain.local

    2014 7-9 + 14-45 - 44.830 [info] flashupdate.domain.local 1629

    2014 7-9 + 14-45 - 44.831 [info] 1614

    2014 7-9 + 14-45 - 44.831 [info] 1616

    2014 7-9 + 14-45 - 44.832 [info] 1618

    2014 7-9 + 14-45 - 44.835 [info] 1608

    2014 7-9 + 14-45 - 44.835 [info] 1612

    2014 7-9 + 14-45 - 44.837 [info] 1620

    2014 7-9 + 15-18-0, 225 [info] 1628 flashupdate.domain.local

    2014 7-9 + 15-18-0, 236 [info] 1629 flashupdate.domain.local

    2014 7-9 + 15-18-0, 238 [info] 1614

    2014 7-9 + 15-18-0, 239 [info] 1615

    2014 7-9 + 15-18-0, 240 [info] 1618

    2014 7-9 + 15-18-0, 242 1619 1063 [info]

    2014 7-9 + 15-18-0, 282 [info] 1628 flashupdate.domain.local

    2014 7-9 + 15-18-0, 283 [info] 1629 flashupdate.domain.local

    2014 7-9 + 15-18-0, 283 [info] 1614

    2014 7-9 + 15-18-0, 284 [info] 1615

    2014 7-9 + 15-18-0, 284 [info] 1618

    2014 7-9 + 15-18-0, 287 [info] 1608

    2014 7-9 + 15-18-0, 288 [info] 1612

    2014 7-9 + 15-18-0, 289 [info] 1620

    2014 7-9 + 15-18-0, 289 [info] 1604

    This is an output of LS endpoint for C:\Windows\SysWOW64\Macromed\Flash showing that nothing moves

    43871 total

    -r - r - r - 1 usergroup 16435888 May 15 12:18 Flash32_13_0_0_214.ocx

    -rw-rw-rw-1 user group 4609272 9 Jul 16:18 FlashInstall.log

    Usergroup - rwxrwxrwx 1 1863856 15 May 13:18 FlashPlayerPlugin_13_0_0_214.exe

    -rwxrwxrwx 1 user group 257712 May 15 13:18 FlashPlayerUpdateService.exe

    Group of users - rw-rw-rw-1 511152 May 15 12:18 FlashUtil32_13_0_0_214_ActiveX.dll

    Usergroup - rwxrwxrwx 1 847536 May 15 12:18 FlashUtil32_13_0_0_214_ActiveX.exe

    Usergroup - rwxrwxrwx 1 847536 15 May 13:18 FlashUtil32_13_0_0_214_Plugin.exe

    -rw-rw-rw-1 user group 16361136 May 15 13:18 NPSWF32_13_0_0_214.dll

    Group of users - rw-rw-rw-1 1583299 May 15 12:18 activex.vch

    Usergroup - rw-rw-rw-1 856 15 May 13:18 flashplayer.xpt

    -rw-rw-rw-1 user group 0 9 Jul 16:25 ls.txt

    -rw-rw-rw-1 user group 135 9 Jul 15:52 mms.cfg

    -rw-rw-rw-1 user group 1598803 May 15 13:18 plugin.vch

    The mms.cfg looks like:

    AutoUpdateDisable = 0

    SilentAutoUpdateEnable = 1

    SilentAutoUpdateServerDomain = flashupdate.domain.local

    SilentAutoUpdateVerboseLogging = 1

    I know that

    1. the internal update server is able to communicate with Adobe and download the updates (I used wget in verbose mode to check the result).

    2. on the verge of ending, I manually browse and download files update v14 without problem, so config and web hosting permissions looks ok

    3. the update of the endpoint for a reason any still refuses to remove the updated files. So, the idea seems to be in the mysterious error codes?

    So I'm stuck - please help!

    Hello

    I'm glad it works for you now.

    The Setup log file you posted contains any errors, codes just information that indicates the proper functioning of the background update features.

    To clarify one of your points, the internal update server does not communicate with Adobe servers to download the update package.  As an administrator, you or someone else, would need to download the update package (fp_background_update.cab) and send the files (in the structure provided) on your internal server.  It is a process unless automate you it.  Once the files are displayed on your server, it can take up to an hour for updates start to appear on your machines users (of course, depending on how your environment is configured, you can to clear the cache of your server so that the new files to download).

    --

    Maria

  • Where can I find an update of the BIOS for Satellite A100-200 (PSAA8E)

    Hello

    Where can I find an update of the BIOS for this model?
    The BIOS on the download page is from November last year, is there something more recent, or does anyone know of an update that is compatible?

    Thank you

    Ian

    The drivers and BIOS published on the page of Toshiba Europe are always the latest versions available.

    Toshiba page does not provide a different version then the one available is the newest ;)

  • Satellite A200-1DN - the update of the BIOS for Windows 7

    I am running 32-bit Windows 7 on a Satellite A200 1DN. I had battery problems (plugged in, does not support) and I understand that I have to update my BIOS. However I can't find an update of the BIOS for Windows 7, only Vista and XP.

    Can anyone help? I should update with the BIOS in Vista? Are there other options to fix this battery? I already tried an ATX reset and uninstall method battery Microsoft ACPI compatible controls.

    Any advice would be much appreciated.

    Thank you
    Ian

    Theoretically, you can install Windows Vista to update Bios and return Win 7, then. Before you do, try this:

    Unplug the computer from the power adapter and turn it on. Let the computer battery power until the computer turns off
    Remove the battery. Using a soft cloth, wipe the battery packs connectors and AC adapters.
    Reinsert the battery and plug it into the power adapter

    > I tried an ATX reset and uninstall method battery Microsoft ACPI compatible controls.

    also, have you had the same problem before installing Win 7?

  • string does not update in the state machine

    Help

    I'm pulling my hair out on this one.

    I have a control over the channel I want to get the value that out of the front at a certain point in a type of State machine architecture, but the value contained in the string of LabVIEW not updated during the enforcement program for the purposes of the block diagram.

    I checked that the VI is not corrupted by creating this simple VI to illustrate what I'm doing. (otherwise empty)

    The length of the string, or the indicator related to the local variable, or updated a probe on a wire connected to the string if during 2 seconds after the start of the VI, something is typed in the control of the chain.

    LabVIEW 2009 version

    Windows 7 operating system

    This could be and OS related issue? -J' I normally use XP not Windows 7 with 2009 and I've never noticed this before.

    Any quick feedback this weekend would be greatly appreciated

    Thank you

    James

    Try setting the chain control to "update the value while typing". (right click...).

  • Why this disable structure encapsulating the loop for that I'm falling?

    In the middle of coding and debugging I noticed something weird... now I'm just curious.

    Here is what happened (audio WARNING may be a bit much, fans of pumping in a warehouse im in...):

    https://www.YouTube.com/watch?v=vC9BKJ0CwmY

    I'm really just curious to know why this is happening - it seems that there is the note of "make sure wire you the error" fault behind the loop that the disable struc overlapped a bit...

    Why the struc disable that first, I dropped in this video did seize all of the loop?

    -pat

    You have this decoration of the label on your block diagram behind your loop For. When you put the new business structure, he captured this label which is outside the loop For. This forces the case structure to take the loop too, since it is the only way to recover the property node and label.

  • Table of path error 1430 in the loop for

    Hello!

    I have a problem with the 1430 error: path is empty or relative, which seems impossible. The thing is that I have a battery of indicators of path connected to the loop for (check the .jpg and there is no problem with writing to a file by using the paths of an array with the first and last index.) Others are not saved because of the error... to be honest, that all data paths are absolute. Record in the file of the idicator path is the work of a Subvi (merge data vi) but it is in a for loop because I need to make it available to multiple files. There is no error that occur with the work of Subvi to a path. The question is: what labview makes with the paths saved in a table between the loops? I have just run out of ideas so if someone had some time, I would really appreciate for all the tips and ideas.

    K.

    Hello again,

    If someone was interested in the happy ending: the solution is: 2 loops for. I think there must be something with the way that labview sends data between iterations. In any case - don't know how much exactly but works

    the floor is .jpg.

  • Cannot use Select inside the loop For inside the SCTL (FPGA) - Bug? An alternative?

    When I put a Select statement inside a loop in a loop of Timed Cycle in LabVIEW FPGA, I get the following error when I try to compile:

    "An internal software error occurred. Please contact National Instruments technical support on ni.com/support with the following information:

    Error-61003 occurred at

    Possible reasons:

    LabVIEW FPGA: you cannot include this function in a loop For when the loop is within a single cycle timed loop. »

    I didn't know that whatever it is documented that says that this is not allowed; is this a bug or am I missing some documents?

    The code that causes this error looks like this, inside a SCTL (ignore Boolean wire wandering behind the loop for)

    I came up with the code below instead, which compiles into one Cycle timed loop, but it is a bit ugly. Does anyone have a better suggestion?

    This issue is currently followed under the CAR # 592391. Please keep an eye on our patches and new versions as usual!

  • Had to do a restoration complete my xp machine and will not update, in the past, system automatically updated with cartridges of siema etc service?

    Had to do a restoration complete my xp machine and will not update, in the past, system automatically updated with cartridges of siema etc service?

    What is happening, it is that it is so more the possibility of a user friendly hands on automatic update of Windows XP from a clean install.  Windows Update will NOT synchronize with and updated in the current order status to update a machine with a clean install of XP, but you separately download some patches and intermediate updates and apply them manually, to have a machine that connects a bit normally with Windows Update.

    Install the last update cumulative security for the version of Internet Explorer you have currently is essential, and you need to download separately and install it before going any further.

    http://support.Microsoft.com/kb/2888505

    Scroll to the information file for XP and Server 2003

    Download the file corresponding to your version of Internet Explorer and install first.

    It is also highly recommended that you install Firefox because IE8 is limited, probably compromised and sometimes useless and will crash on many sites, including Microsoft sites, including linked just above.

Maybe you are looking for

  • Sync pictures libraries

    Somehow, on my iMac, I "managed" to get two libraries of Photos (Photos Library.photoslibrary and Photos library 2.photoslibrary). Photo library has 7426 photos and 53 videos as pictures library 2 7425 photos and 53 videos. As long as they are essent

  • New MacBook Pro 13 "2016 with 2008 LED Cinema screen A1267

    I want to continue using my screen and no one seems closed that Retina display is compatible with the LED Cinema Display Monitor. Love at first sight communicates with the Mini Display Port connection on the screen? HELP and contradictory responses f

  • Maximum width of Panel

    Hello I use CVI 2012, and I have a question about the maximum width of a Panel. I created a group of experts on the UI editor width 3840 pixels, but when I run my application, the displayed width of the group seem to be 3350 pixel (and the rest is cr

  • Port connection settings

    How can I configure my WRT600N router for a service that I have who wants to upload to a specific Port to enable SSL

  • I save a print file with MODI who registers as a tif, but when I go in to find them I can't.

    When I go to save it again in that I see that this is where I knew that I saved it, but when I go to open them through a sieve to normal document that is not raising them. I checked the same hidden files appear in the Folder Options? Can anyone help?