Generate the event by timeout

Similar Questions

• Generate the event

  Hi all

  I use Labview7.0 and need to generate the automatic event. This means without any button or mouse move the activity on the front panel, I want to generate the event after each interval of time given.

  How can I fullfill my requirement?

  Kind regards

  Ratna

  Hello

  One way you can trigger the event is to use node property of this control or indicator value.

• Several events in the event Structure timeout

  I have two signals heartbearts (Boolean values that flip from true to False True at regular intervals) indicating the status of two parallel loops. I want to do to ensure that each of these loops is running at a reasonable speed and are not hung up on what whatsoever. The easiest way I can think of is a structure of event by looking at the value changes for each heartbeat with a case of timeout.

  However, I can't figured out how to combine events too AND the place where. Currently, if a heartbeat slows, the structure of the event runs again if the other loop works. In short, I want that the structure of the event to only fire if the two events occurred before the time-out period.

  
  

• generate the event user triggers two events structure

  Hello

  I would like to generate a while a user event that triggers events in two or more loops loop event.

  I have attached a non-fonctionnel project VI, so easier to show what I would understand.

  My experience is that user generated event cause that a case of Structure of the event, not both. Why? What if I want the two loops of the event that will be raised? How can you make with the user event?

  Maybe someone could explain this a bit deeper?

  Thank you very much!

  Kind regards

  PS. : new problem with forum upload file...

  So here's the VI in my dropbox:

  https://DL.dropboxusercontent.com/u/8148153/draft_to_show.VI

  Classic mistake.

  You need TWO 'register for events', the output of each class to a separate structure of the event.  Then it won't work.

• Generate the event when the focus lost

  Hello

  is there a way to capture an event when a textbox control lose focus?

  Thank you.

  Yes there is, just create an event filter button on this control of the chain and when a tab is entered you trigger your (re) load event. Or you can set a keyboard shortcut for this field (such as ctrl-D) to define a group of controls to a default state.

  What are the complications that would keep a button 'Load' of work? Maybe things are too complicated and we need to simplify things a bit.

  Mike...

• Value property (signage) for the event - button press the joystick

  I tried to use my Logitech joystick button to trigger events.  I read several messages and LV help on how to register for events, and I have not found exactly what I need.

  I understand that events are generally not triggered by contributions of NON-INTERFACE, but I keep reading messages that make it sound possible.  Book LV Basics II says: "NOTE of Clusters are the only container objects for which you can generate events.  LabVIEW generates events control for clusters, before it generates events for the objects they contain, except in the case of the value change event.  They Value Change event generates the event part of the cluster, click the cluster itself. »

  So, the gamepad buttons and axes are in clusters and I'm trying to detect a change in value for items in a cluster (see the attached below .VI), but the event is not the trigger.  If I press the button 9 on the broomstick, the LED should light and channel indicator should say that the event has been triggered.  It is a simplification of what I'm trying to do, but I think that if I can do this simple case work, I can do the rest.

  It was created in LV10.

  So what I am doing wrong?

  Thank you, Ed

  Oh, I think that we have understood what you have when asked. We all said that you need ASK the joystick in a LOOP

• Programatically change control to generate and event...

  I add some improvements of the user (anti-screw-it-up functions) to ensure the desired process are executed.

  First question: if I have handles by a change of value in a text control, an event (event occurs when you press enter or exit control with the mouse) the event will also occur if you leave the control by changing by programming the focus to another control?

  I'll try and put in place a vi temp to test this, but wanted to see if anyone had tried this and if it works or not.  My other option is to set up several instances of the event but I was hoping to use a single case to handle everything.

  A few details, I have a test system that tests a product automatically when the product is placed in a cradle and the cradle is put in position and active a prox sensor.  At the end of the test, the system waits for prox sensor turn off before resetting the system.

  If a device goes down, there are options to rework and the unit can be retested.  When it fails, a label prints defining failure modes and provides a number of failed series.  When the device is tested again, failing serial number is entered into a text control. I want the sequence of re - test (queued upward at the event) occur when 1, a failing serial number is entered or two a key (with mouse) I'm pretty sure by pressing a button would in turn automatically create the event of change of control of text so my button can no doubt be a fictitious button just for appearances.

  When the hole is if the user enters a serial No. failed and don't leave the command and then committed a pump to start the test.  Can I use a function of "empty access/string path ' but the control will continue to show empty as if nothing has been entered until you press the Enter key or the mouse is used to exit the control."

  If I can generate the event by changing the focus, then it will ensure that if you enter a failure s/n, the sequence of re - test occurs and if nothing exists in this domain, it performs a first test of time.

  A bit long-winded for sure, but any thoughts are appreciated.

  Can't really post a simple code that this feature is in my top level vi and I have a very large app justifying download.

  Doug

  Yes, change in focus is the same by clicking with the mouse outside the control.

  /Y

• isolate the imposing of the event

  I'm controlling a valve using my serial port that sends a signal to turh in clockwise or counterclockwise. To reduce the CPU usage I put this in a structure of the event so that the signal is sent only once as opposed to each iteration, which now works. However, this seems to have stopped everything. The only time wherever my advance program is when I operate the switch to turn the valve.

  How to isolate it the action of the structure of the event so that the switch works, but everything else works as well. For example my elapsed time is displayed once I have activate the switch, but then it won't change until I have press the power switch again. It's exactly like pressing the lap button on a timer instead of watching the progress of the time elapsed before. See attached file to see what I mean.

  I tried to put the two parties in their own while loops, but met with little success. I'm new to labview, help you to everything which can give is welcome, ideas?

  Thank you for your help in advance.

  -adam

  Try this. I just put your code inside the event of timeout. You'd never put the time.

• Time after the event, without blocking the user

  Hi, I am creating a software to control a power supply. One feature that I have bad to add is a timer.

  I have a structure for the event that fires when the user clicks on the buttons, which most slowly increases the current for a period defined by the user. I want the timer to count so far defined by the user of time (in seconds) after the event fires. One thing, however, is that I need to be free to trigger another event (which stops the power supply in an emergency) so I can't have this synchronization process lock me up for snap buttons.

  I was experimenting with the millisecond timer, as well as with a loop that goes through with a defined time interval, but it is not quite give me the functionality I want. (I've been placing these loops of timing outside the structure of the event to other events run yet, but I want the timer to only is triggered after an event is triggered, is it still possible?)

  If you need more information, just ask, thanks!

  Thnigs to do to dramatically improve your code:

  You need not separate loop.  Put your code from timer inside the structure of the case of timeout event.  Set the time-out to 50 instead of 500 to match what is in your separate loop.  You can get rid of the becaue of queue, it is no longer necessary.  Create registry to offset on the main loop.  When the event occurs to start timer, pass the time for the shift on the right side register.  Wire the shift register on the left side in the event of timeout to use its value.  BTW, the shift in your separate loop register is used to nothing because you do not change the value on the wire.  Don't put all the loop in the case of timeout, get rid of the loop and just put the code of the loop, with the exception of the EndTime variable that can be removed and 50mS delay, which can be removed.

  Put the Boolean value of early Inc. inside the case to start Inc. value change event.  Same for all Boolean values.  Put them in their cases of particular event.

  Get rid of local variables now.  You'll race conditions if you do not, you doing wrong in that you don't need especially now.  Look at the current limit control.  Add a wire from the control of the current limit to where feeds the local variable of the current limit.  Delete the local section.

  Move all the controls from the inside of the structure of the event outside the structure of the event, but still within the main loop.  Wire controls where they are going.  Now you can eliminate all local variables of thos and just wire from control where they are needed.

  All outputs error.  One is enough.  Create an error in your front panel.  On the block-diagram wire the error in the first function of Sorrensen before the loop.  Where the error from the Sorrensen hit the loop function, change the terminal on a shift register (right click and select replace with shift register).  Move the error Out 2 to out of the loop on the right side.  Error 2 wire the register shift on the right side.  Everywhere, you need a mistake in, branch off the error in the thread because it is in the loop.  Wire all your outs of the error in the case of the event and the last Sorrensen function to a function of merge error.  Wire of this error on the shift register.  All your errors are combined in a single indicator.

  That should do for now.

• Cancellation of registration user stored in the shift register event generates the error 1 if Subvi runs intermittently

  Hello

  I'm trying to understand the behavior of the attached excerpt from a larger overall vi functional.

  In a State, I'm generating a user event and in a State later unsubscribe from the event and destroy it.

  Now, if I went through the VI together in one step (i.e., step through events? set to FALSE), the VI runs without generating an error. However, if I run the VI by intermittent and output after each execution of the loop, the vi generates error 1. Why is it so? Please notify. Thank you.

  Peter

  Why are you registration and deregistration of events user, but you have no event structure in your VI who use them?

  When you run events, probaby the event you registered disappears when your VI stops running.  If you were able to keep your VI in the foreground running, then the life of the event would persist.

  The event number still exists in the uninitialized shift register, but it does not say more once your high level VI stops and you get the error 1.

  If it was really a global functional VI, you would terminals connected to the connector table in your VI, you would call this as a Subvi as part of a main VI and life event would persist and you wouldn't mistake 1.

• Error 1 to generate the user event

  I have a master/slave VI tester to evaluate the functioning of a Global functional error which should gather errors are generated in each loop.  I get 1 error: invalid parameters to the user events VI generate in the FG of entry error and do not know why.

  I enclose my (LV 8.5) shots of screw and screen, because I think that images would explain better than words.  I have documented the code to indicate what should happen and what is happening.

  Please let me know if you need more details.  Thank you! Your help is appreciated!

  ~ Kristen

  In the case of initialization of your VI main, you're going to initialize the FGV Subvi error.  But you can't give the refnum of user events to store in the shift register.

  When you use this FGV later, it uses the empty refnum into the shift register and sends that to generate the user event, and it gives an error.

• Deleted by error "Timeout" case of the event Structure - how can I put back it?

  I have deleted by mistake the case of "Timeout" and then visited account there is no other way to control the State of 'rest' of my program when it first starts.

  How do I put back it?

  Is that enough to create an empty box with a constant related to the value of timeout?

  Is it possible to appoint this case "Timeout"?

  Look under in the event Sources.

• Generates an event on the indicator

  I'm developing a program in which I need to generate an event on the indicator, the project is as we give 4 entries for LabVIEW vi equipment, since these 4 controls are through material I can't generate events on them, so I'm trying to generate an event on the indicators of these controls , but the structure of the event does not respond when I use the value on the display change event. After doing some research, I got to know that we can use the value property (Signaling) to generate events on the indicator, but I don't get how to use it.

  This is the vi in which I train, this is not the project initial vi, it's just the vi to learn how to generate events on the indicator.

  Thanking you

  You create a value of signage as follows: click with the right button on the Boolean value and choose Create > property node > value (signaling)

  If send you a value to this terminal will trigger an event.  For example see the image:

  

• Need help to generate the name of the variable object timeout

  Below is a function that I use for scaling an object down and then hide it. It works fine on a single object, but if I try to run it on multiple objects at the same time, only the last object gets scaled down. I think it's because the timeout list never has one in this document, "ShrinkTimeOut."
  
  Each entity in the list of timeout needs a different name? And if so, how would I dynamically generate a name and save it so I can kill the timeout once the object object has reduced completely?
  

  > It looks like I'm getting rid of the timeout properly object in my code?

  Now that you say, and I have a glance, no - this isn't:
  not sure about the order of the parameters here:
  function fShrinkLoop (mModel, aTimeout) {}
  Creates a variable that contains the value of the model vector
  scale (vector (1,0000, 1,0000 1.0000)).
  nScaleVector = mModel.getPropRef("transform").scale;
  Check if the model is 1% or less to its original size.
  If (nScaleVector [1])<=0.01)>
  The model makes it invisible.
  mModel.visibility = symbol ("none");
  Kill the timeout object.
  aTimeout.forget ();
  } else {}
  If this isn't the case, further reduce US model and allow the loop to
  Repeat steps.
  mModel.scale (0.9);
  }
  }

• structure of the event + while loop

  Hello, I am trying to understand how to unite two while loops in attached VI for half a day

  The first loop creates a state machine solid which reacts on each key and runs one of the structure cases. (that part works very well)

  The second loop, always generates the random number, but it stops the generation during the time where one of the structure cases events are executed. (this is the part ticky)

  Any suggestions?

  If you want your random number to stop so that the user triggered events are running, you should be able to simplify your design a lot.

  It can be done with a loop using the case of timeout.