Set up a loop timed since another Panel

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• Model in the loop timed While the elapsed time

  Hello NOR community,

  I'm trying to use a while loop timed to run controller simulated for a mechanical system test. I need the time loop to run at an even 50 Hz to simulate the controller that will eventually drive the mechanical system. To check the speed at which the loop runs, I made a VI that gets a value from each loop clock and subtracts the value of the clock of the current iteration of the value of the clock of the previous iteration. I have eliminated all other codes this VI except for the recovery of the clock, to ensure that no problem with another code in VI. I find that the time between iterations is not constant, but it is consistent. In other words, the elapsed time can change at each loop, but it changes according to a specific model, such that the average elapsed time is equal to the value that I use for the timed loop. The loop will run faster than posed for several cycles, then slow down during a cycle even at the same time. Here are some examples:

  Running at 5 Hz: elapsed switches schedules between 0.203125 and 0,187500 seconds

  Clocked at 8 Hz: time is constantly 0.125 seconds.

  Operating at 10 Hz: elapsed switches schedules between 0,109375 and 0,093750 seconds

  By examining the differences between elapsed time and the stability of the 8 Hz setting, it seems that there is a minimum time of 0,015625 seconds (64 Hz) division. It is much worse than the 1ms accuracy claimed in documentation. This could be the cause?

  I am running Windows XP with LabVIEW version 8.5.1 and have observed this behavior on several computers with different screws

  Thank you!

  Erik

  Your problem is the function that you use to get the current time.  It's just the time of the Windows clock which has a resolution of 16 msec.

  You must use the function of number of cycles as Jarle has pointed out.

• Loop timed in LabVIEW DLL does not close

  Hello!  I have what I think, it is a simple loop timed in LabVIEW that stops after 100 iterations by throwing an error and letting the loop 'stop on error.  It works fine when it is executed in the ordinary LabVIEW environment, however, when compiled as a Dynamic Linked Library (DLL) and called from LabWindows it requires me to put an end to execution, rather than going out nicely.  As well, it seems to leave the real appeal of virtual Instrument very well and go to the next line of code, but when my function main() in LabWindows is completed it must always be something not cleaned which is the cause not come out well.  Any ideas?   I tried to add only a call to QuitLabVIEW and that doesn't seem to do it.

  Thanks in advance - hoping you will notice an error really easy. )

  A photo of the timed loop is attached.

  An excerpt from the code of LabWindows:

  int main)
  {
  CallMyLabVIEWDLL();  This line launches successfully and closed the window for my virtual instrument LabVIEW
  MessagePopup ("' My Title:", "That occurs after the call to your LabVIEW DLL" ");    This popup appears - indicating the call to the DLL has finished

  But after the code has completed LabWindows always shows "running", rather than close.

  return 0;
  }

  Why do you use a loop timed in the windows environment?  They are best used for real-time environments (not windows) and tend to have more support than the time.

  Is there a particular reason, a while loop will not work?

• How can I move a control to another Panel?

  How can I move a control to another Panel. For example, I currently have a textbox control and command which I would like to move to a tab of the Panel buttons 2... Is there a way I can just change the Panel they sit rather than remove the controls I have and then create new controls on the tab?

  Maybe you want to make the trip in IDE, not by the program...

  It is very simple: select the controls that you want to move, Ctrl-x or select 'Cut' in the Edit menu, and then select the destination tab, press Ctrl + V (or select Paste from the Edit menu).

  That's all.

• Problem updating to a control on a panel based on a change in value in another control on another Panel

  Hello

  I'm trying to update the value of a control on a Panel, when the value of another control on another Panel is changed.  The two panels are saved in two .uir different files, so there are two associated .h files generated by CVI.  The problem is that, inside the callback function for the control being modified (Ctrl_Id_A on Panel_A), when I call it SetCtrlVal (Panel_B, Ctrl_Id_B, Value); 'Panel_B' and 'Ctrl_Id_B' (who have the same numeric values Panel_A = 1 and Ctrl_Id_A = 2 in their folders respective .h) are interpreted as Panel_A and Ctrl_Id_A.  I never understood how ICB does this distinction, for example. knowing that PANEL_A = 1 and PANEL_B = 1 is mentioned, but don't worry because I never needed only to intercommunication between the panels up to now.  Any help on how to implement this would be greatly appreciated.  Thank you!

  For your reference, in this discussion , I give a few basics on how the panels and controls are handled.

  Additional useful forum discussions can be found here : this is the list of the results of a search of forum for "constant handle name Panel": you will find several useful posts that you can read to better understand the concepts of handle Panel.

• Lightroom Develop module, operating instructions a Committee opened nearby when another Panel is open

  I wish I had my module to develop panels closed so I don't have to scroll to the bottom of the page for the next panel, but I don't want to close the control panel and then open another Panel. So here's my question:

  Q: is far from having the panels automatically closes when the other is open? For example, if I work in the base Panel and pass to say the detail panel.

  Hi davidwi,

  Please right click on the Panel, and choose Solo mode to open a panel at a time.

  Let me know if it helps.

  ~ UL

• Link to a specific State in MSO since another article

  Is it possible to link to a specific State in a multi-State since another article object? I have a table of contents section I want to return to a specific State of an ESM in another article if possible. How would I do that? Thanks for the help.

  No, you can not

• Link to Spry Panel tabs IN another panel of Spry tabs

  Hi, I can't try to understand how from another page a link to a tab within another panel tabs Panel.

  I followed the tutorial on this site http://foundationphp.com/tutorials/spry_url_utils.php and have the link work properly.  I changed a code and now I have a panel tabs residing in one of the tabs in an existing tab

  Here is a picture of what it looks like.

  

  I have my link on the page linked to "Hunt" for page B.  I added the animal tabs Panel.  Each tab includes pictures of each type of animal.

  Here's my link code:

  < a href = "galtemp.html? tab = 1 #gallery" >

  This works well and open the tab I want.

  Now what I want to do is to click on a link "Elk" in another page and have the tabs 'hunts' open and "Elk" open as well.

  I tried things like:

  < a href = "galtemp.html? tab = 1 #gallery & tab = 2 #huntgal" > This does not work.

  < a href = "galtemp.html? tab = 1 #gallery? tab = 2 #huntgal" > This does not work.

  On another site, I created, I used this code:

  < a href = "#" onclick = "TabbedPanels1.showPanel (1), TabbedPanels2.showPanel (0)" >

  It worked, but Island link was on the same page.  I could adapt it works in another page?

  Any help would be appreciated.

  Thanks Winrol

  Try

  How to get to the Panel tabs in the tabs Panel

  http://forums.Adobe.com/message/4980068

• Abandonment of a loop timed - what happens?

  LV2013, LVRT 2013

  I'm not clear on what happens when you STOP a timed loop, STOP TIMED STRUCTURE vi.

  The help says:

  "If you try to interrupt a timed running the timed immediately loop loop runs the current iteration and returns ABORTED in the output of the REASON for the data node left."

  Given the following loop:

  

  I can abandon this loop, by name, by the way.

  This cancellation occurs at any time, regardless of this loop is where its cycle.

  This loop runs at 10 Hz and takes 1 to 2 mSec per iteration.

  1... what happens if the cancellation occurs during the delay?  I guess that he wakes up with the reason set to ABORTED.  It executes the code inside, or not?

  2... Suppose that the loop has already run the vi of the SAMPLE, but not the vi STORE, when comes the demolition.  It don't...

  (  ) 2A... An abortion without running the STORE?

  (  ) 2B... Run the STORE, browse again with REASON = INTERRUPTED, and then runs the SAMPLE and STORE again?

  (  ) 2C... Run the STORE, browse again with REASON = INTERRUPTED, then popping out without running again?

  3... assume that the loop is located in the middle of the vi of the SAMPLE.  What is this VI partially abandoned through?

  What throws me is help text: "immediately runs the current iteration and returns ABORTED."

  If she abandoned after he woke up normally, then the REASON is already set, so he can't tell me that it's been abandoned.  But if she should set the REASON, then it must finish executing the code, browse AGAIN, and then run the code AGAIN, isn't?

  Anyone know the rules for this?

  I have not tested, I guess based on a combination of documentation and experience in similar situations. It should still run once with the reason set to ABORTED to give the code inside a chance to do a cleaning. If you are in the middle of an iteration, it will end this iteration, then run again immediately. If cancellation is received during the wait, the loop is executed immediately once (stops pending). The last execution will always be reason set to ABORTED, and you never have a situation where the code is suddenly stopped in the middle of execution.

• FPGA loop timing and data transfer question

  Hello community,

  two really matter of rookie on FPGA timing loop. Attached a screenshot of the data acquisition loop I created. The different modules have different maximum sampling rates, then what will be the speed of the loop? It will adjust to the slower module, or can I use a timer loop?

  It's the loop of the acquisition, but I need to treat the data as well. Currently I transmit the data to the processor loop through which fixed the length of array FXP. I guess the best would be to use a FIFO. Can you confirm this? Or I should use something else?

  Thank you!

  

  Yes, loop rate will be determined by the slowest module. If you have some really slow analog input module, you might want to put in a loop for your fast IO. You can always put calendar information in your loop to display your real rate of loop using a shift register, subtract and a number of cycles VI.

  You're right - without loss of high speed data acquisition (without losing all the data points), you must use FIFOs. If worry about missing points data (i.e. only interested in current value), then the front panel indicator reading is fine.

• How to set up web hosting using parallels plesk panel?

  Hello

  After you resolve my wampserver question, now I came to stuck in another problem how to set up my purchased GoDaddy VPS hosting using parallels plesk panel 11? I'm just trying to find some tutorials or guide on this in order to easily configure and complete. But it was really hard to do, that I do not know a lot on the technical side with the server, hoping that this could make bad if I did something wrong in there during the configuration. So, I want to help a person who can help me here to implement all of this.

  Kind regards

  Babu RAM

  Hi Ram,

  The problem you are having is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the IT Pro TechNet public.

  Please post your question in the TechNet Forum.

  You can follow this link to ask your question:

  http://social.technet.Microsoft.com/forums/en-us/category/w8itpro

  For any other corresponding Windows help, do not hesitate to contact us and we will be happy to help you.

• Cannot set a video loop of background for the menu

  It cannot be that difficult to do.  I have damage animations.  Buttons work fine.  I can not put a video loop behind the menu.

  I tried:

  (a) alt + drag the .mp4 on the menu

  (b) using the icon for selecting the video option in the control panel menu for .mp4 loop property

  (c) by using a single video file to point to animate on for 2 seconds then set a loop after that for 27 seconds of video loop

  Option C preview correctly and all, but just showed as a black background in the final exported .flv

  Option A and B just did nothing.  There is no video vignette that appears, or whatever it is.

  The loop in the audio file works fine in the preview and the final result, but not video.

  I've looked through many tutorials and just may not know what I am doing wrong.  Any suggestion would be appreciated.

  Thank you

  Should work.

  I would try the elementary streams: m4v and audio.

  Are you sure there are no other layer interfering with the motion? For example, adding a still in photoshop without making the 'context' works fine until you add a background of movement. Yet to replace the technical background layer, but luckily leaves your extra layer covering the motion. Probably not in this case as one of your options produces motion.

  What do you mean by video thumbnails? You're adding motion to the mp4 and also animate buttons?

  If it does not, use any closure and just get the movement of work.

  Test your basic bringing in a motion menu and using the m4v that to see if can get motion.

  What is your default transcoding defined on your 1280 x 720?

• I FF29 and I installed classic restaurateur theme but I don't have the ability to set tabs to the square on the Panel of the RTC. Any ideas?

  My CTE Control Panel don't give me the ability to set tabs squared. Are there known issues with other add-ons that can cause this?

  In Options/preferences-> Main-> tabs CTR the first drop down menu should have three "Squared tabs' styles to choose.

• convert loop timed to normal while loop

  How convert a while loop time normal while loop with exact same properties and performance?

  I have donot need to worry about the exact date. But it takes the timed loop time will be run similar to loop.

  And also, is there any issue encountered when we use Timed loop? problems such as that crashing exe?

  Hello

  1 kHz is the used base clock. Then, you decide to use 10 as period (dt) which is 10 ms.

  The clock is selectable in real-time systems, you can use the 1 MHz clock, giving resolution µs

  But for your needs, using 1 kHz clock with dt = 10 and using a ms of waiting with 10 connected to it is exactly the same.

• Two different running loops one after another with different time intervals

  Hello

  I am currently using LabVIEW 2013. I'm new to LabVIEW.

  I take 10 values to data acquisition during the 9-10 sec time interval within a period of 10 seconds.

  I thought runs two loops. 1st loop will run for 9seconds out giving zero and the second loop will launch with 1 second left taking all the required 10 values. can someone help me in this way to do it. If you can suggest me any other idea.

  Thank you.

  Your task of data acquisition is to take 10 samples in 1 second (I assume that you also spaced).  10 samples/s = sampling frequency of 10 Hz (Hz = events/second).  To configure DAQmx tasks, MAX is your friend.  Open MAX, find your device (plugged in), open a panel of Test and find a way to let him taste at 10 Hz and collect 10 samples.  Test to see if it works.  Get it now to save as task.

  Now, when you configure your block diagram, drop a DAQmx Start Task (or even read DAQ) and wire an empty constant to the task in.  See the little arrow for menu drop-down?  If you click on it, one of the choices should be the task DAQ, you just saved.  Select that and it will work.

  Now, all you have to do is wait 9 seconds before acquiriing your 10 points.  There are functions of synchronization that can allow you to do this.

  Bob Schor