While the loop within a box Structure runs only once a target FPGA

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• Help, I'm controlling a flashing, sending him a value true or false within a box structure.

  Help, I'm controlling a flashing, sending him a value true or false within a box structure. The LED changed to resemble a specific indicator, so I can't just create a property node for LED and the value that flashes (unless someone can tell me how). I can see a number of ways to put my blinker indicator changed positions, but they all use while loops. What I am struggling with is controlling the while loop using a Boolean true or false.

  What I try to achieve is to create a virtual car dashboard and control using serial data. I built a VI as follows 3 bytes from the serial port and the data that I send to the VI will be in the form of a letter followed by 2 numbers. I uses the letter to settle the case structure then change numbers to different cases selected by the letter.

  I compare then 2 numbers and according to the ASCII values, I'm a true or false for the comparison.

  So once I set the indicator flashes, I need that it continues to Flash until he gets another command to stop.

  
  

• While the loop does not stop until 2 more clicks

  I must say that I'm really not familiar with LV, but Im learning.

  So why is that after I clicked on low stop, I had to click my OK button twice, then my program stopped. Why can't it stop immediately?

  Furthermore, if I want to do some of the dice to table, which wire do I missed?

  Thank you!

  Hi RawtoLV,

  You have a while loop in loop a while. When you run the other while the loop stops when you press the stop button, the inner circle while loop always executes. Since your OK button use latch release, what I noticed is that when you pressed the OK button, it quickly into position from true to false, which never stopped during the operation of loop (maybe because of the wait). Can I ask what are you actually doing with the structure of sequence?

  I would suggest using the event structure in place (http://zone.ni.com/reference/en-XX/help/371361K-01/glang/event_structure/):

  

  

  

  Here are some information about the structure of the event:

  http://www.NI.com/white-paper/3331/en/

  http://www.YouTube.com/watch?v=8eO64fo3Pho

  Warm greetings,

  Lennard.C

• My new Publisher El 12 runs only once after restarting the PC - how to fix?

  My new publisher of 12 items, runs only once after restarting the PC and seems to work well. I did a "clean install" repeatedly (cleared Temp files, shut down all applications, including Norton Antivirus and then installed DVD after a clean reboot). I can launch organizer of 12 elements several times, but the photo that editor runs only once. After that, I have to restart the PC, and then I can run the Editor again, but once again, only once. I also first 12 items for video files - no problem, he launched several times. I see that Alfredo has a similar problem: How can I fix?... is it a bug of El 12?... Thanks for your help... k-paul

  Thank you very much Peru Bob... your statement works... of course, this stitching is 12 items of closing/out not really closes it (which is why I could not re - start it), so there's always a problem... I can live with that, but why would the program stops not when I close?... k-paul

• The initialization Code: run only once at T = 0?

  Hello
  
  Is it possible to run some ActionScript only once at the beginning of the flash application?
  
  There are GIFs that I need to download dynamically from the server that once that will be used on the buttons. When we go to another scene and return, the GIFs are downloaded again.
  
  Thank you
  FG

  #initclip and #endinitclip must be applied to a movieclip. If this movieclip is on stage as part of the _root timeline and governing has played more than once, your code initialization, attached to the timeline of the movieclip would run only once.

  Anyway, there are some easier ways to accomplish what you want directly. for example, the following code in the conditional runs, at most once little matter how many times the frame is played:

• Follow-up of the steps to install the hp wireless printer and it worked only once. Now he says it is "offline."

  Original title: the computer geek

  Follow-up of the steps to install the hp wireless printer and it worked only once. Now he says it is "offline." Convenience store said that it cannot solve the problem. That's happened?

  Hello

  1. What is the brand and model of the printer?
  2. don't you make changes on the computer recently before this problem?
  3. What is the full and exact error message?

  Step 1: The procedure below can help you to fix this problem.

  a. Click Start > Control Panel > printer and faxes
  b. now right-click on computer and select the printer to use online

  Step 2: Update printer drivers.

  To install new or updated printer drivers to update
  http://www.Microsoft.com/resources/documentation/Windows/XP/all/proddocs/en-us/print_drivers_install_updatew.mspx?mfr=true

• While the loop does not stop within a structure of business

  Hi all

  I have a business structure that works an engine to a certain PWM when my metal detector does not give an amount greater than the threshold that is ' false '. The motor is controlled by a PI controller so a while loop is used inside the false state. When my metal detector exceeds the threshold I want the "true state" to perform but which does not occur. the entire program is a while loop which aims essentially to maintain the operation of the metal detector. How can I make the State of the switch works.

  Once you get the code is trapped inside the inside while loop, it will never be a Boolean wire change because change is outside. All you need is a loop that contains a structure of housing. Run your program with execution highlighting to get a better understanding of the flow of data.

• RandomGen elements, case structure nothing if it's false, while the loop passes iterations, can not get the values in table outside the structure of the case

  Hello!

  I tried to build a trigger that triggers a true value each 1000 milliseconds (from the first real);

  which real command structure box to a value of the randomNrGen of the sample and place it in a table.

  but I would like to USE this table and I can't do this beacause I can not get out of the structure of the case.

  AND:

  the while loop ignores samples; If you run the vi and look at the speed at which the table fills, ypu notice it is not periodic: the first few items are inserted at 1 second interval, but then it jumps one;

  would it be because of the wait time 1ms?

  1. How can I create a structure that does this:

  If set to True, it samples a value from Genesis at random and places it in the table

  OTHERWISE, it does NOTHING, without zeros sent to the table just waiting for the next true and only the values sampled at True remain in the table?

  2. How can I stop it pop samples (multiples of 1000 in my case)?

  In conclusion: I need to be able to take samples on the sample generator and store them in an array of 3d in a zig - zag (1.jpg) way, but able to think about it, we need to go beyond these two questions.

  Please ignore the meter.

  Please help me!

  TibiG wrote:

  Thanks, Crossrulz!

  This did not omit all values and it works fine.

  Is it possible to get information in a case without making use of the large loop?

  My program will become very complex (I need to synchronize a magnetometer and a stepper motor to make a 3d map of the magnetic field of the magnet) and I want to do everything as simple as possible.

  If there is a way to get information about a case structure, other tnan using registers with shift on the big loop, and you know it, please show me.

  Thank you!

  You could also use a Feedback node, just keep it out of the structure of the case.

• SR400 while the loop does not work

  Hello

  I'm using LabVIEW for control SR400 through a GPIB card.

  I use SR400 to count the number of signal in a second, wait 0.05 s, then again count the signal once, wait 0.05 s once again, and so on.

  However, the while loop didn't iterate. When I started the program, it is only once.

  In execution of highlight mode, when an iteration is finished, he waited a long period starting the next. In normal mode, it doesn't have to iterate.

  Also when I clicked the stop button, it's been clicked. However when I wrote a very simple program, the stop button worked normally.

  In any case the button issue is not very important. I don't care that the program iterates forever or not. I just want to iterate.

  I searched the jury and had not could not any related problem.

  Is it better to attach my VI? The VI is in my computer lab.

  Thank you very much!

  This code just feels bad.

  (No real management mistakes, deep, stacked sequences FOR lines that are wired to iterate through only once, controls on the right and right to left, wiring weird code on average the last 10 items (Hint: means ptbypt with a length of 10 sample he would!).) If you want to use the wire of the error, the sequences would not even necessary)

  If the stop button does not reset, it means that the iteration of the loop does not terminate. It can fill in only if the two structures of the sequence ends.

  Have you tried running in execution, emphasizing fashion while looking at the diagram? Probably one of the communications is at a standstill. For example, the instrument sends really 6 bytes at the end? When you set the overall timeout and what is it?

• While the loop Tunnel help

  I have a variable inside a while loop, that I want to access outside the loop, that is, in my VI, I have two indicators, one inside the loop and the other outside the loop.  The variable is incremented on each iteration.  However, I am not able to see this iteration of the loop.  I see that the last value of the variable.  Is there anyway for me to access the variable inside the loop as it is running.  In regards to my VI, is it possible for my indicator "inside" correspond to the indicator 'outside '?  Any help with this will be appreciated.  Thank you.

  Kind regards

  David

  Yes.  You must use a local variable of the 'Inside' indicator that writes to the indicator 'outside '.

  There are other ways to do so, such as pass the data via a queue or a notifier.

  The concepts of tunnels, flow of data, and that data is not available to that structure, it is finished, is all notions of LabVIEW.

• While the loop executes only once?

  I'm doing a LabVIEW program to control a power supply of Sorensen. The VI circled in red calls for supply of the voltage and current and then exports it. I want this to happen continuously, but it seems that it only updates once. Anyone know how to fix this?

  Yes.  Your loop will not go again until an event occurs as the change in value on the value of the boolean values.  You might want to set a timeout on the structure of the event so that if no event occurs (I don't know if you have other manifestations), the case of delay of the event structure is running and the loop will iterate.

• Change the number of items in the drop-down list box when running

  I'm trying to change the number of items in one of my boxes of comobo.

  I have been through the help and this forum and have the values to within the drop-down list box change very well, but in a scenario, I want to go to three options for 2. And according to other choices to 3.

  I guess I have to use a property node but I can't understand that one.

  You can use the method to reset to zero (using an invoke node) before setting the [Strings] (after setting the value by default an empty array) or create an Xcontrol (you can see examples of LabVIEW for xcontrol).

  Ben64

• While the loop records all the data

  Hello

  I have a LabView program containing two while loops. The first is used to increment a frequency on our machine and the second, which is located in the first, used to take a certain number of points of data to this frequency. After taking these data points, the frequency is supposed to rise again. This happens for a set number of times.

  The problem I have is that the data file as the data points in the second then the loop are supposed to be written in does not display do not all the data points in the program should have taken. For example, if we want the first loop increment of 10 times and the second to take 5 data points every time, we expect to see 50 data points in our files. But we see only 10. The watch file always only an amount of data points equal to the first loop iterations. If we cut our data at that time.

  Someone has an idea what could be our problem?

  
  

• the event structure cannot combine with other events and run only once

  Why it will always get stuck when I combined the 'new user add' event to the event of 'Login '?

  It works for me when I separate the two, but the 'Add a new user' button can work but only once for the structure above, program will be blocked on the second time that I press the button "add a new user".

  

  It has already been said, you must use that a single structure of the event and not 2. Also, avoid using local variables (better store data in a shift register and not in an indicator) how you do it, it can cause bad racing conditions.

  Actually here you just don't another data storage since you have a file. Don't store data file to the root of the C drive, you do not have write permission. Use the default data folder or the folder of the application.

  I have attached a simple example. I guess that's a work at home? Please make my account help: try to understand why your VI does not work and try to find a solution by yourself. Modify my sample and play with him. This is how you learn LabVIEW. If something is not clear, post here, and we can explain/help.

  Edit: has the 'connection' event, I don't check against whether the file exists or not. Difficulty of this part, gives too little practice.

• producer consumer loop run only once?

  Hello here

  In my VI, the loop of the producer seems to operate continuously, but the loop of consumer only run once.

  I did not use producer/consumer patterns before, could someone give me some ideas why this is happening?

  My code is attached.

  Thank you in advance.

  Faouzi

  It would be the wrong choice to use a structure of the event into the loop of the consumer.  As it is configured, you must generate a leave mouse or mouse event enter on the graph of waveform for the loop of consumer to complete its first iteration.

  Remove the structure of the event.  you don't need to update a chart.