on the timing and the GUI control loop

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• Error 200077 (frequency) and 200452 (task control loop) error occurred DAQmx create calendar Source.vi

  Hello

  I'm trying to control the timing of a timed loop. So far, I have tried several approaches via the software and which worked very well except the time loop in some missed cases 1-2 Ms I want to make sure the timing is right. I tried to provide an external clock through the acquisition of data I. The system I use is NI USB-6212. It has two counters and DIO and AIO, but I keep getting errors. I tried two different approaches. One was to use directly the game 'DAQmx create calendar Source.vi' in frequency mode, and when I did, I got error 200077. Then I found a post of somone saying that sometimes it is not possible and an alternative method is to use the same vi but set task of loop control mode. This one gave me Error200452. For this one you will see in my attachment the suggestion was to use an AI then the moment of him and then use this task for Creat DAQmx synchronization Source.

  I don't know what the problem is or if I need to put something differently.

  Please let me know if you can help me with this.

  I'll try to continue to work on that, but if anyone of you a suggestion I'll be very happy to consider the issue.

  Thank you in advance,

  Best, Massimo.

  Massimo,

  In my view, the errors that you see are the result of your hardware USB-6212 is supporting the functionality of the task control loop.  I have a M Series PCI card that is capable of operating both of your screws attached without problem (although they still +/-1ms variation on occaision).  When I try to use a USB-6212 simulation, I get the same error codes that you do.  Unfortunately, it's just a case of a lack of equipment.

  Kind regards

• How can I get the Char String ring from the GUI Control Label

  Recalling the ring control text label of a ring of GUI control, not the control Label, but the label of the indexed by pairs value.

  GetLabelFromIndex is located in the index help online, and you can also find it in the Search tab. I don't know if that's what you hear.
  If what you mean is to ask how you would be able to find it if you have not already know his name, then I agree that just by typing keywords in the "search" tab is probably not the best idea. What could have done is to go to the section of the table of contents that lists all of the functions to be used with the list control, and then, look at what is there until I found what I needed. You don't even need to use the online help. You can use the library feature tree (UI library > graphics/controls/bands charts > list/tree controls (value/label)). Or better yet, just start with a function with that you know works
  trees and then look at the features around it.

  Luis
  NEITHER

• loop of two producers for quick DAQmx and the user controls?

  Hello

  Sorry if my question is maybe a bit too general (I don't have a VI implementation yet).

  I think about the solutions for a Structure of producer-consumer with event loop in the part of the producer.

  So far, if I had to do a project with DAQ, data analysis, data recording and enter the user controls, I've followed usually this kind of approach:

  I used the producer part to capture interactions with the user, and I also had a state machine in the part of the producer, with registry change. I also buy (any faster then 10ms) DAQmx device data in the part of the timeout of the structure of the event in the loop of the producer. I have several consumer loops down, such as data analysis, data recording, etc... I send the data measured in a cluster with the enumerations of the State of the loop from producer to consumer with queue loop.

  I'm not happy with my approach for the following reasons:

  1,

  If I need device acqure faster DAQmx data that the operating system clock can handle (like 1 MHz), so I can't put it in the part of time out of the structure of the event of the producer loop, because here I can go through the while loop with minimum 1 ms.

  2,

  If I put this part DAQ in a loop for quick consumption, it is not admissible for orders from the QUEUE line after that it starts to run (assuming that I use the standard structure of producer-consumer, so consumer loop every time iterates once, when a package comes from the Dequeue).

  Then say, how can I control a young (timed by DAQmx device internal clock) loop of data acquisition of the structure of the producer of the event loop? As loop DAQ to start, stop, restart, etc...

  Thank you very much for the advice!

  You can certainly have several loops of producer.  Have a User Interface, loop driven events to send commands and a separate data acquisition loop to send data are not a problem.  Each loop has a separate queue. (You might be able to make it work with a single, but using two queues avoids many problems).  Often, I used a system of three loops long before that everyone was talking about calling it a producer/consumer.

  Lynn

• control design and simulation in a loop the final amount not what I expected

  Hi the LabVIEW forum members.

  I have a frame control and Simulation in which I am simulating a regulator in closed loop (see file attachment).  When I apply a step of the input unit that I expected to get the answer to deposit at the unit, i.e. the stage of entry being the set point.  However, he moved to about 0.625.

  Can someone point me in the right direction please?  I'm obviously doing something wrong here.

  Kind regards

  OK guys,

  Cancel my last post, I found my mistake, it was the P + I control shape, I made a mistake in the Integral control action transfer function where the Integrator not arrive to integrate an error.

  Kind regards

• What are the Causes of 'loop Hang"problem with file i/o when using timed multiple loops on one OR cRIO-9012?

  Normal 0 false false false fr X-NONE X-NONE / * Style Definitions * / table. MsoNormalTable {mso-style-name : « Table Normal » ; mso-tstyle-rowband-taille : 0 ; mso-tstyle-colband-taille : 0 ; mso-style-noshow:yes ; mso-style-priorité : 99 ; mso-style-qformat:yes ; mso-style-parent : » « ;" mso-rembourrage-alt : 0 à 5.4pt 0 à 5.4pt ; mso-para-marge-top : 0 ; mso-para-marge-droit : 0 ; mso-para-marge-bas : 10.0pt ; mso-para-marge-left : 0 ; ligne-hauteur : 115 % ; mso-pagination : widow-orphelin ; police-taille : 11.0pt ; famille de police : « Calibri », « sans-serif » ; mso-ascii-font-family : Calibri ; mso-ascii-theme-font : minor-latin ; mso-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ;}

  I experienced a problem with an application. I think I've isolated the problem in the "Timed loop question - Source Code.zip" attached source code. A detailed list of my results are in the attached document "Timed loop detailed question - Results.docx.

  Overview - it seems to be closely related to the IO files and the use of "Timed loops" on the OR cRIO-9012

  1. If I activate the e/s in two loops, then two loops crash simultaneously

  2. If I activate only the e/s in a loop, then only this loop crashes

  3. If I activate the e/s in two loops and make a 'While' loop earrings, then it don't crash

  4. If it is wrote nothing in the file I/o, then it don't crash

  5. If the reference to the file is left open instead of opening and closing on each call, so it don't crash

  6. If I try to run it on "My Computer", then it don't crash

  7. If the IO is only activated in a loop and programmed to wait for one second between the file access, then it always crashes

  In my real application, any given row is only writing (at least) once a minute, but I couldn't still my application to plant within a period of 24 hours by writing a single error of a single loop once per minute, with a low CPU use. It was the impulse to test the seventh point above.

  It seems that the best solution was to open the reference to the file and let it open. I think it is a good practice in general and I'll do the update in the application. This should solve the problem, but it is very difficult to verify this due to the sporadic nature of the question. As such, I'd like to understand what was causing the problem so I can verify that it was fixed. So far, my attempts to create a single, coherent theory able to explain all aspects of this issue have failed.

  I just wanted to know at all that there has been a request for corrective action (CAR #214156) has filed for this issue to be fixed in a future release. This seems to be a problem with the VxWorks operating system, we use in real time. We have additional cRIO chassis which have a Pharlap OS where it does not work. For now, you can search for this CAR ID notes to see if this problem has been resolved for publication in the future.

  Currently, there are two solutions, we have identified for this problem:

  1. open the file before the loop and close it after. (recommended)
  2 perform file i/o in a normal loop and transfer data to a queue.

• How to properly temporarily disable all channels except one in the multichannel PID control loop?

  Hi all

  Help me please to solve the problem. How to correctly temporarily disable/enable all channels except one in the multichannel PID control loop?

  Thanks in advance,

  Oleg

  Hi Oleg,

  the entry "Car?" of the AdvancedPID is a table – as well as MS and pv entries.

  So what's the problem say - / allowing for a control (aka of entry) instead of all loop?

• the audio control panel does not appear on various websites which I am sure they are there. I see them in IE and chrome, but not in FF

  The audio control panel does not show simply. On this site, I should see the control panel. http://www.testplek.annemariebeeke.nl/huiswerkopdracht_week3_bonus.html.
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  Reload Web pages, and ignore the cache.

  • Hold SHIFT and click reload.
  • Press 'Ctrl + F5' or 'Ctrl + Shift + R' (Windows, Linux)
  • Press 'Cmd + Shift + R' (MAC)

  Clear the cache and cookies from sites that cause problems.

  "Clear the Cache":

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  'Delete Cookies' sites causing problems:

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  Start Firefox in Firefox to solve the issues in Safe Mode to check if one of the extensions or if hardware acceleration is the cause of the problem (switch to the DEFAULT theme: Firefox/tools > Modules > appearance/themes).

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• the volume control is grayed on and no sound

  I use a Mac Pro, purchased in mid-2010, with a 2.8 GHz Quad-Core Intel Xeon Processor, 13 GB 1066 MHz DDR3 ECC memory, which I've recently updated to El Capitan version 10.11.4.

  I had a few glitches to mail to work but got there. Then I realized that I had no sound. The volume control is grayed and the button is at MAX, but there is no sound.

  I can't try to find where a control can be hidden which let me re - turn on the volume. Nobody knows what it takes to turn on the sound?

  Hello

  Try resetting your NVRAM memory.

• How can we separate "Icons and text" of the browser control buttons (back, forward, etc.) since the icons on the toolbar of the add-on?

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• HP 5510 will be not printed black before and after you installed the new cartridge. the specified controls did.

  Photosmart HP 5510 will be not printed black before and after you installed the new cartridge.  The specified controls did.

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  You can click on the menu of your SETUP program on your screen and go to TOOLS and clean the print head from there.
  
  If this does not resolve your problem, you may need to replace the print head.
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• The output on my Macbook Pro is not giving me the drop-down list, & happens either in the port of the helmet or digital port and neither one is what I need. I tried turning off the computer and hold "Shift"' Control', 'Option' with the power-o ".

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• Fingerprints and the remote control supported on Satellite P100-387

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  Hello

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