Loops For parallel within a Structure of case - one or more threads?

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  Try to install Service Pack 2 for Windows Vista and it says this "one or more system components that require the service pack are missing" need help?

  Hi, Mksethompson,

  What is your model of computer?

  Error message when you try to install Windows Vista Service Pack 2: "one or more system components that require the service pack are missing."

  http://support.Microsoft.com/kb/968279

  Dell issue

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• Is it possible to execute a loop For independently within a while loop in LabVIEW 2013?

  In my program, I want to run a loop For inside a while loop and run independently, at their own rate of execution.  A test, I wrote a simple VI with a while loop with 1 second calendar and in this I inserted a loop For with 3 of a second.  I created indicators for the two terminals of the iteration.  When executing the VI, I found the while loop waiting for loop For run N times before the while loop is executed again.  I also found that sometimes the first iteration of the loop For ends at 1 second instead of 3 seconds and the STOP button to complete execution of the While loop does not always work.

  This is the expected behavior. LabVIEW is the language of s DATA stream. If you want the curls to be independent, it can be data forcing addictive so use separate loops.

• Do nothing in the case structure with loop For

  Hello

  I am trying to extract data from my signal (0.3 0.4 0.6...). I want to extract values greater than 0.5 and put it in a table. If I use a loop For which I can determine each index of my data to be compared and it happened in the structure of the case. In the 'Real' box, I wanted the value to extract outside the loop For. And I want to "do nothing" if my value falls within the box 'False. ' However, it displays error, saying "' Tunnel: lack of assignment to the tunnel '."

  I tried to select 'Default', but it does not work since I use a Boolean comparison. I tried to use the registry to shift, but in vain too.

  Someone could guide me on this to extract only a value greater than 0.5 and index them?

  For example "0.6 0.7 0.8; 3 4 7 index.

  Satisfaction will be given.

  

  

  Here you have

• For parallel loops run on hearts of dedicated processors?

  I don't think that this is the case; My confusion is due to the fact that the literature regarding this structure addresses using the maximum number of cores the computer in which this codemay run in the dialog box for parallelism but also loop iteration using the CPU Information function to determine the number of instances to parallelize. I suspect that parallel loops For will first of all be decomposed into Tufts/tasks of iteration which will be either in versatile collaboration & and/or multithreaded in a system of priority of execution before they ever get to be mapped to hearts dedicated instance. Is this correct? -literature, I want to talk about is Improving Performance with loops parallel http://zone.ni.com/devzone/cda/tut/p/id/9393, under the guidance of Performance or the help of LabVIEW (multiprocessing and Hyperthreading in LabVIEW). I don't see how this information applies to how the loop bodies parallelized and executed. I hope someone can enlighten me and perhaps others to read these documents.

  Thank you!

  jorgeinSD, thanks for the insightful question. Your second option is correct. Each instance of a parallel loop is in a different bouquet and schedules of delivery system of these Tufts between the available threads. LabVIEW does not bind son to cores for the parallel loop, so threads can switch between the nuclei they run.

  Mary Fletcher

  Software engineer

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• A certain time out loop that depends on the other a case structure.

  I did a lot of research on this subject and I think that I reduced the precisoucly of the problem. I want my user to enter a password, and if the password is correct the alarm does not sound. But if that's a mistake, I want the alarm to sound. The problem is that I have no way to tell the alarm to stop the sound when the user enters because the sound is locked in a while loop . I can't seem to do this then that stop the loop for some reason when the user enters a new number.

  I would be very grateful to you, the Aboriginal people if you could help me out here. On the VI I said where is the problem. (The problem occurs inside while loop).
  If you guys have any questions please let me know and I'll try to answer them to the best of my ability.

  All entries for the while loop that are outside of the loop do not change after you enter the loop.  So if the first loop has a 'fake' wired into it, which means not to stop, he will never stop.

  You will need to have something out there that reads a new value every time.

  I must say that it looks like the structure of your program won't work, however.  The structure of the event above can shoot outside while occurs only once each time the large loop, so right now he can never more touches after a 'real' in case of emergency structures, enroll you in the lower part of the block diagram.

• 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.

• Switch timer within the structure of the case?

  Hello

  I am relatively new to LabVIEW, hoping someone can help me with something that I am trying to solve. I am working on a system for the acquisition of data for a formula SAE car and try to design a VI that will be time how long it takes for the car complete the trial of acceleration of 75 m. The timer will be actvated in now the pedal for 5 seconds and save time for the file when 75 m is complete.

  I've set up a business structure that works in the following order.

  1: Check the brake pressure (if threshold, go to 2)

  2: how long the brake was pressed for time. (If more than 5 seconds switch to 3. If the brake is provided within this period, date back to 1)

  3 whether the movement of the wheel (wheel strats move, go to 4, otherwise, keep control)

  4. begin to measure speed and distance. (once reached, proceed to 5)

  5. replace all over again, save the file (then return to 1)

  I'm pretty happy with everything but part 2. I tried a timer pending within a sequence of flat, check that the pressure is fine, but pedal pulses rather that now he can active it, and using a true/false with the same function case structure waiting does not like LabVIEW bed not true/false value, once within the structure of the case.

  I would be grateful if someone could point me in the right direction!

  Thank you

  Kevin

  get rid of the sequence, here your timer elapsed, also got rid of your case to check brake pressure, do not use ms of waiting for your timing of sequence...

  

• In any case, to use transform activity with a loop for storage of the iterative purpose?

  Hi all
  
  
  I have a question about the processing activity. As I am new to BCI, I want to learn more about the processing activity. If we use a transformation inside a loop activity, all other records other than the last ones will be overwritten. I want to avoid this situation and s output
  
  Scenario of
  -------------------------------
  
  (1) inside a loop for, I keep a DB adapter that will choose 1 row of table. So in each loop iteration for, we will get a line.
  
  (2) in the same loop, we maintain another DB adapter which will retrieve multiple records.
  
  (3) these values, I need to map it to an output variable (output xsd is able to contain multiple records) in the following order.
  < 1Adaptateur out >
  < data1 > < / data1 >
  < data2 > < / data2 >
  < 2 adapter output >
  < data > < / data >
  < data > < / data >
  < / 2 adapter output >
  
  for example)
  < Person > - 1 adapter Db I st iteration
  < name > xx < / name >
  < 23 > < / Age >
  < address > - 2nd iteration of st adapter 1 DB
  home address < address > < / address >
  address of the < address > < / address >
  permanent address < address > < / address >
  < address >
  < / person >
  
  
  < Person > - 1 adapter Db iteration nd II
  yy < name > < / name >
  < 23 > < / Age >
  < address > - 2nd iteration of st adapter 1 DB
  home address < address > < / address >
  address of the < address > < / address >
  permanent address < address > < / address >
  < / book >
  < / person >
  How can I pass the data that we have read from the db adapter in the above format
  
  Pls suggest a solution for this.
  
  Published by: user_ds on June 15, 2011 02:38
  
  Published by: user_ds on June 15, 2011 02:47

  HI'.

  1.) initialize a new variable 'counter' of type int, and assign inside initialize counter = 1
  2.) put the card1 DB and DB map2 invoke the of inside a while loop, then put it
  condition (that you want to use) for the number of times you want to hit the DB again and again
  3.) use affect the activity and inside this use Add and put the [$counter] on the expression of xsl to map to the next node
  4.) now use a beneficiary within an Assign activity where increment you counter + 1

  Yatan-

• Can I detect and handle an event already within a structure of the event?

  I have a VI that would do what I want, if I could detect and handle an event of second mouse click while I'm already handling a previous event (selection from popup menu).

  I hope that the picture is clear, but in words what I want is the following: I have first right-click on a chart and select a context menu item, which specifies a graphic manipulation of properties.  Often, this manipulation requires clicking on a second graph to get a reference (for example if I want to copy some of the properties of the first chart on the chart of the target).  It is, it means I'm trying to detect a second event already within a structure of the event.

  I think I could do with a state machine and some registers at offset, and if it's the easiest way, I'll do it.  I would be interested to know whether, if there is a way to detect and manage events 'nested' as I suggested.

  Thank you!

  Your code is not really that complicated.

  Yet, the problem is that confuse you it upward with the main state machine. I would use it in a small parallel loop that only manages events associated with the menu shortcuts. All this should be able to run in parallel in any event, even if the main loop updates the data in the chart at the same time, for example.

  I don't like the dialog box, it hampers the flow of work, but if you use it, use two button dialog so that the user can also cancel if necessary. Instead of the dialog box, you should just temporarily move the cursor on. I also do little to check before operating on the second graph of reason and give a time limit for the second operation.

  Here is a quick project to a more atomic shortcuts Manager. Modify if needed. There are probably bugs.

• make a graph in real time of 1 DBL value at a time, using a loop for

  I have a somewhat interesting programming task where I have the following situation: (I have attached a mac version of vi Labview 2013)

  -Using a patented (pre-made and uneditable) sub - vi, who receives a value of 0 or 1 as input and reads off a single measure, whenever he receives 1 while a value of 0 is necessary to 'reset' of the vi to rehearse a new measure.

  -I would like to run this sub - vi repeatedly in a loop For each value of "measure" are sent to a curve of waveform to give a direct value (real time) for the graphic to display.

  -As it is, I have a vi file that simulates action in a loop but built in a 1 d array to get exuent values sent a waveform curve.

  -I don't know how to make a real-time graph which receives 1 value double both.

  -In addition, I want only every 2nd value sent to the loop for, but I already have several ideas on how to do it.  First of all, I am concerned about the target in real time.

  Kyle Shiel

  A graphic, not a graphic, allows you to update a point at a time. It would be inside the loop for. update the chart or not, you can use a select statement or the structure of the case.

  These are pretty basic functions in LabVIEW. Please see the free tutorials.

• How to stop a flat sequence (or timed sequence) which is inside a loop for

  The problem is this, I have a loop that repeats 10 times and inside this loop, I have a flat sequence (or timed sequence) with four images, each of this chassis to evaluate a different condition of a vector that I introduce.

  What I woud like for example is:

  I'm a fifth County of the loop for and in the case that part 2 does not meet the condition, the sequence of dish (or timed sequence) stops and starts the loop again but this time for the number of number 6.

  I would appreciate your response.

  You can't stop a sequence structure.  This is how they are made.

  What you should consider to get rid fo structures sequence and to change a state machine architecture.  There are many examples in LabVIEW, as well as on the Forums.  The big advantage of the state machine is that at the end of each State, it examines the conditions and determines which State then run. And that is exactly the description of the problem you are experiencing.

  Lynn

• VI is jump a loop "For".

  Zipped VI is fixed, the upper level has "7_AD-DC producer consumer" as the title.  You will have to dig into the folder for access.

  I have attached a picture of the Vi, highlighted in red is the loop in question.

  The problem I have is that when I run the vi has the range of 0.25 to 0.5 Volt (chosen in the loop of producer not shown), it works fine, but if I run the vi put on the beach of 1 volt, it ignores all highlight loop, and finishes just the event.

  The program aims to help the particular device calibration.  If you follow the path of the error, it crosses the upper part (1605, 1605 mode range, range of AC - DC, the factor N, etc.) all the way through the indicators for "1 k reference in ' and ' 1 k reference on.  The program runs right up through these measures of reference, but when it is in range Volt 1 (shown in the picture) it ignores the entire for loop.  I son of error in all, and I thought that those who would prevent race conditions and they would oblige the Vi to run as expected, but apparently not.

  It's kinda a Vi spaghetti, I'm not the best with LabView, but it seems so strange to me that it works when the value 1/2 a volt but don't not 1 volt value.  I put the indicators on the elements that fuel the loop For, the number of frequencies and the tables of frequencies look good and I can't really think what causes violence to ignore the loop for.

  The for loop is not in 'jumps' it of executing 0 times and out of default data for all tunnels.

  You have an entrance tunnel auto-indexé why wire terminal N at all? The loop will be the least number of iterations it can.  N times, either the smaller auto-indexd table is something less.

  EVEN worse: the indexed table auto comes from a tunnel exit case structure value "Use default if unwired" so you have two options.  There is a hidden code clear the Board before being sent out of the cases showed, OR the value of the number of frequencies is<>

• You can trigger through communication Modbus TCP/IP PLC data acquisition without using a loop for?

  Hello

  I am trying to contact a facility through a Modbus TCP/IP communication PLC. I'm new to this method, but the idea is that the installation will send the logical (Boolean) values 1 bit by ethernet to my workstation which read and then will begin data acquisition. Basically, I need a triger to come to my pc. I placed my vi inside a structure case T/F which will run according to the signal, it receives data acquisition. However, for it constantly waiting, I put this in a loop for. The works of vi, but playback signals sometimes lagging behind due to the loop for. If I take the loop out and just run labview permanently, it works perfectly, but I know that the option is only for debugging and should not be used. So my question is, is there a better way to wait for an incoming signal?

  Hello!

  Please note that the order of execution of the write operations on the shared variable 000002 is not determined.

  For example, nothing prevents this order of execution:

  (1) value false 000002

  (2) set to true 000002

  (3) execution of the loop

  In what concerns the delay, you might consider placing a waiting vi in the case of 'false', or the loop uses 100% of CPU if I'm not mistaken...

  Kind regards

  Marco

• Structure of case based on a parameter

  Hello world!

  So I was wondering if we could set up a business in a structure of the case, which is based on a parameter.

  So here's what I mean:

  I have a case structure inside a loop for (i = 0,..., N-1). I would like to deal structure for 3 cases: by default, I = 0 and i = N-1.

  The problem is that N can change from time to time. It is not a fixed value.

  Therefore, is it possible to create something that is literally "N - 1"?

  Thanks in advance!

  Valentine

  N °

  But why you couldn't put the N in the equation that determines which cases to run.  You do the calculations and comparisons in the code to the terminal of selector.