UCS 2.0 Documentation loop

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• It seems that I can't use an Apple loop into two pieces. Is this normal?

  This probably a very stupid question, so I apologize before hand, but I was not able to find an answer in the documentation...

  But, I just started to play with Garageband. I noticed that I can use a loop in project only. In other words, for example, I like to use Bell Orchestre layers in a piece I did. But then, I would like to reuse it in another room, that I'm trying.

  When I try to open the second piece, I noticed that the Bell Ringer Orchestral layer loop has disappeared from the library of the loop. He is always in my room, original and all that, but not in the library.

  Is this normal?

  I tried to re-indexing, etc., but this does not seem to fix things.

  Thanks in advance.

  What version of GarageBand do you use?

  Make sure that you are nt having any filter defined on your library of loops.

  GarageBand preferences must be defined like this:

  Keyword navigation: filter for the most relevant content should be turned off.

  

  The dropdown at the top of the loop browser must be set to 'Loop' and the scale: No.

• loop does not work when exporting my slide show

  Photos (1.5) loop works on the slideshow which saves to iTunes, but not when I save on USB or play office.

  Photos documentation does not, if the "Loop" function is supposed to be exported with the video rendering.

  But you can play the video in QuickTime Player as an infinite loop using the command "View > loop ⌥⌘L.

  You can report the problem to Apple: Apple - Photos - comments

  It's a bug or a problem of incomplete documentation.

• Synchronization of multiple FPGA PID loops

  Hello

  I am the design of a PID controller for each of the three axes (X, Y and Z) of a piezoelectric stage using the FPGA module and a cRIO. I used the example of project "Using Discrete PID - cRIO.lvproj" (labview\examples\control\pid\fpga.llb\CompactRIO) as a starting point and I've basically added two PID loops more on the FPGA VIs to the other two axes. I can get the controller to work for an axis at the same time (in simulation mode), but whenever I try to run all three controllers simultaneously, only one works. In order to synchronize between the host and the FPGA VIs, I used three interruptions for each PID loops, but it seems that a single interruption works when I run the code... No idea how to synchronize the three loops of PID with the host VI?

  Kind regards

  Shin

  I think that it is an expected behavior, by the documentation: "VI the interruption is a shared resource, so multiple uses of it induce a further delay and jitter due to arbitration." If you are waiting for the interruption to see, then the other loops cannot continue because interruption VI does not work. On the FPGA if you want all the PIDs to operate at the same speed of loop, put them all in the same loop and use only a single interruption. Or use another synchronization mechanism (set to a boolean of the host, wait it is defined and then erase it on the FPGA). The interruption is only for purposes of simulation, in any case, since the 'central' is running on the host computer. In a real system, the plant works continuously and FPGA directly reads the sensors and outputs, the readers so the only value provided by the host is the set point and is not required for synchronization.

• 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.

• Why Ctrl-P restarts a while loop?

  I explore (= teaching myself) how key codes are captured by the structure of the event.  I built a simple test routine (see below) which has a period of 1 second which increments each tick (allowing the program to exit after 30 seconds) and a key down? filter that shows me what happens when I type in various keys.

  When I ran first, I didn't throw it away? Terminal wired and noticed that ^ Q pops up a dialog box 'Leave?', while ^ P emerged from a dialogue box 'Print Screen '.  I wanted to "capture" these strikes to "Quit" and "Pause".  I then wired 'True' to the Terminal, and no additional dialog not popped up (as expected).

  However, I noticed that typing ^ P effect was to raise my time loop (there is an indicator, not visible here, inside the the timer event that shows the current count, 1, 2, 3,..., and when I type ^ P, it restores 1 and start counting again).  I guess that overall the program is restarted, but that he was not aware of this problem!

  Two questions.  First of all, it is documented, and if so, where can I read on ' actions ' of this key combination?  Second, is there a way to 'disable' this behavior and have ^ P considered just a combination of keys, the effect of which is "waived" by the event loop?

  Bob Schor

  

  Your meter is reset because we did not connect the shift through the key down event register. There is no way to program restarts.

• TDMS loop to make the plot of trend

  I am trying to create a field of trend of peak values of waveform on the 32 channels of my data.  The only way I came with was to put my TDMS reading within a box structure.  If you want to build a trend select you the 'Build Boolean trend' and this case has the PDM read inside a loop that runs through all the samples.  To just scroll the data plots timewaveform and spectrum, you would be in the case of false that is not in a loop.  I have just a scroll bar will offset reading TDMS of entry.

  I get an error with the TDMS reading inside the loop for.  I'm guessing this has to do with the file TDMS of the PDM Open entering the loop for.  I get this error:

  Possible reasons:

  LabVIEW: end of file encountered.
  =========================
  NOR-488: Invalid Argument or arguments to the function call.

  When you use TDMS loop, you will need to be a little careful when you do not the name of the Group of wiring.

  In the TDMS documentation read:

  If you do not connect the data to this entry, LabVIEW reads the data from the first group when you run this function for the first time. If you run this function continuously for several cycles without wiring at the entrance to the name of the Group , LabVIEW reads the data from the n - th group to the nth cycle.

• 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.

• Problem with creation of table of references notifier by using a loop

  Hi all

  I am attaching two try_ChannelsOn2ndMonitor.vi screws out of the random values to four graphics and ChannelGraphsOnSecondMonitor2.vi receives these values through an array of references Notifier and refers to four corresponding graphics. Essentially, the graphics in the two screws are supposed to - and do - displays the same values.

  As a first step, using a loop to create the table of references of the notifier, I was unable to get the four graphs in the sub - VI to produce the desired values. They showed only the values in Figure 4 in the main VI. I tried to use the indexing, and then I tried using Shift Registers associated with the function of 'Building the table', but none of these methods worked. Finally, the only method that worked was that you see in try_ChannelsOn2ndMonitor.vi, which was to create four reporters simultaneously and combine them using 'building the table '. My question is: why is it not possible to create the array of references notifier by using a loop and always get the correct functionality? I spent a few hours I wondered about this.

  All of the comments related to my use of the notifiers, notifying bays or the reference of VI in the Structure of sequence are also appreciated. The structure of sequence is only there because the sub VI must be taken out of a second monitor; I essentially disabled it by setting the FP. State to 'Standard '.

  Thank you!

  Nemanja

  The table is still the order of the references notifier - so that you know the correct order.

  When you say "it will continue execution as soon as one of the notifications is received", do you know if it means he will send this notification for each registrant, or just for the appropriate warning system?

  I'm waiting on multiple notification - if you expected to return (and continue to run) once it receives all notifications I don't think it's what he does based on my understanding of the documentation.

  OK, now that I have had a good look, I probably slightly different framing the code - I propose the Subvi out of the while loop and then put a while loop around the code in the Sub - VI. Something like this:

  

  That's what I wanted to say to have individual loops for the Subvi - terminal error is connected to the judgment for loops (and thus the VI) stop running when you release the notifier. That should remove the need for static VI reference as the VI remains before the end of your first level VI - then you can move your code of positioning inside the Subvi.

  Using the sequence of structures here as you have done to make sure that the code block happens before your start of loop is very good, another common method is to wire the error out in (or at) the border of the loop - in a more complicated application, you would maybe put this code in a State 'init' of a state machine.

• create documentation for the user

  I have a simple...

  I have a panel tabs. A tab is called DOCUMENTATION. I would like to have a button that the user can push that provides a context menu or the flight hover-text (maybe two) that contains some relevant troubleshooting information for the use of the physical instrument. Is attached to my style of fishing-line/duct-tape/man caves to do, there must be a more elegant way.

  My VI runs in a loop, so I need something that can handle in a loop.

  Thank you!

  See attached example.

  You can also add the tip Strip directly by clicking with the right button on control > properties > Documentation > advanced band.

  Run vi, click on the button if pop poster has it before use... Just added the event structure. Place your mouse on the same button it will show same help text in the edge Strip.

  Is that what you want?

• loop label

  It's trivial, but it is related to the style. Also, it's Friday afternoon, and we're all just faces right now, right?

  In any case: I've been labelling my curls for documentation purposes. It seems OK but years ago, a developer, that I worked with was a great way to make the color of the label and the context of the loop look seamless. I can't duplicate this look. Anyone know what I want to talk to and know how to do this? My apologies for not having an example.

  Thank you in advance.

  

• Where is the documentation on front panel objects?

  This might be a stupid question, but is it helps on objects of façade? For example, on the front panel, I chose

  Modern-> list, table & tree-> Listbox.

  Now, I typed the letters A, B, C in the list box and right click on the node of the list box on the block diagram and witness of the. Of course, he showed the list again.

  I noticed that the wire was a blue line "BOLD". I wired then that a for loop with indexing turned on, and this time I ran inside the loop, I created a new indicator

  the VI and inside the for loop through the indicator, I saw a number, which was the index of the last item selected in the Listbox.

  Well, if you're wondering where I'm going with this, here's my question: How do we find out (where is the documentation) that tells a user of the blue line "BOLD" on a Listbox

  carries information on the entries in the list box, as well as the index of a selected item? I mean there are a lot of other façade objects that do have not any help documentation.

  What a person to learn on items in the front? On the block diagram, I can mouse over, press Ctrl-H and click on detailed, help but cannot do anything on the front panel objects.

  All Web sites that can help you with this?

  Located in the Help of LabVIEW file

• 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!

• Timed loops with visa

  Hi, I'm new in labview and I need help.

  I have a microscope shutter which is controlled by VISA.

  I want this component to open for X milliseconds (eg. 100 milliseconds) and then close, wait W dry (eg. 3 seconds) until it opens again expect the same milliseconds X so that it closes and wait W dry again and so on. And I want to repeat this cycle Z time (eg. 100 times). I use the shift operators in a time loop, but I can't stop the loop in the middle of the operation.

  Thank you

  Carlos

  Hi Carlos,

  Under the name of Raven suggested would be the way to go.  I have attached a first draft of this thing with the necessary documentation.  If something is not clear, feel free to ask.

  

• Infinite loop start after updating to Vista Home edition

  I own a lenovo model 8705CTO mini tower PC.

  At the end of July, an automatic update of Vista cannot install properly, which left the starting in a State sequence, appears:

  "Configuring updates: stage 3 of 3-0% complete.

  "Microsoft Vista Home Basic"

  for 10 seconds, then

  "Shutting down".

  for a minute or two

  and restart again in the same loop.
  This loop lasted several hours.

  With the help of:

  "Rescue and Recovery - repair Express."

  the following message is generated:

  "Errors have been detected in the operating system."

  "Click on files" reveals:

  Details

  Status of name
  Bootmgr corrupt

  The bootmgr file has 325 KB

  Apparently, it was generated on 01/18/2008 and contains 333 203 bytes.

  Operating system restore points prior facilities only are not available, since the automatic update has left the system with the restore than identical behavior points.

  How can I recover without having to re - install the operating system from scratch?
  It is advisable to remove the bootmgr file and it re - generate from scratch?
  What is the procedure to achieve this?

  Thanks for your response (s)

  HD

  I have created the disk as described, as the 64-bit version. The standard disc worked and allowed me to use repair tools.
  BTW, these are already shipped with the LENOVO system, and I consulted the tools off during the START-UP phase, then by restarting the PC.

  The answer to the success of the recovery could be found here, after that I tried
  "Configuring updates: stage 3 of 3-0% complete.
  on Google and looking at various web pages:http://support.microsoft.com/default.aspx/kb/949358

  (Restore points were crushed, because automatic updates have been selected, and the computer ran unattended for more than a week by substituting the last point valid restore as update VISTA tried to re - install the updates failed every night)

  Method 3: Rename the Pending.xml file, and then change the registry notes read the following important notes before you use this troubleshooting method.

  • Use this method to resolve the symptom of restart that is described in the "Symptoms" section, so that you can back up data before you reinstall Windows. You must use this method of troubleshooting only if you plan to back up data and reinstall Windows.
  • Use this method only after trying other methods.

    Note If your computer is not configured to start from a CD or a DVD, see the documentation provided with your computer for instructions on how to continue.

  • Use this method only if the computer has no restore points or if you cannot start your computer to a point where the system restore feature is available.
  • After using this method, the following conditions may exist until reinstalling Windows:
    • An update is being installed may not be installed correctly.
    • Windows Update may not work correctly.
    • If an update is installed, you may be unable to stop the installation process.
    • You may be unable to enable and disable certain Windows functions in option.
    • Certain optional Windows features may not work correctly.
    • The computer may be in an unprotected state.

  To rename the Pending.xml file, and edit the registry, follow these steps.

  Start Windows Vista and go to system recovery options:

  1. Insert the Windows Vista installation disc in the disc drive, and then restart the computer.
  2. When you are prompted to restart from the disc, press any key.
  3. When you are prompted, configure the language to install, time and currency formatsand keyboard or input method options that you want, and then click Next.
  4. On the Install Windows page, click repair your computer.
  5. In the System Recovery Options page, click the version of the Windows Vista operating system that you want to repair, and then click Next.

  Use the system recovery options to rename the Pending.xml file and modify the registry:

  1. In the System Recovery Options page, click command prompt.
  2. Type cd C:\windows\winsxs, and then press ENTER.
  3. Type ren pending.xml pending.old, and then press ENTER.
  4. Type regedit and press ENTER.
  5. Select HKEY_LOCAL_MACHINE.
  6. On the file menu, click load the hive.
  7. Look for the following folder:
     C:\windows\system32\config\components
  8. When you are prompted for a name, type Offline_Components.
  9. In the registry editor, find and delete the following registry subkey:
     HLKM\Offline Components\AdvancedInstallersNeedResolving
     HKLM\Offline Components\PendingXmlIdentifier

  Exit the registry editor:

  1. At the command prompt, type exit to quit the registry editor.
  2. Press ENTER.
  3. Click restart.