Structure of the event edit window

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• Change the condition in the structures of the event

  Hi all

  I am a student doing a project. I am very new to labview and I don't really know much of the function in labview. In any case, I have this timer made by using the structure of the event if I'm not mistaken (I downloaded this timer among the post on this forum). This timer will start at 0 sec, count up to 20 years, then stop. So what can I do to change the time of the end of this timer? Let's stop at 50?

  The program is attached. Please please explain or change the program and attached as a response. I tried to understand the help function, but still do not understand.

  I thank very you much in advance!

  Hello

  Thanks for your inquiry. The attached VI uses programming structures: while in the loop, the structure of the event and structure of the case. You'd have to change is in fact the case structure. Before going to, let us go through the different structures. Open the block diagram by going to the Menu bar of the front panel and go to the window-> open diagram.

  

  The while loop resembles a Do loop in text-based programming. It runs until a condition is met. Since the attached VI, it stops running when you click the exit button.

  The event structure is a structure that consists of sous-schemas. The structure meets the interactions with the objects of the front panel. For example, if you click Start or stop in the façade, the structure of the event will be a case that corresponds to this interaction. In the attached VI, the case, which corresponds to the interaction with the button start or stop, called 'Start', 'Stop': change the value. Each box contains an event handling routine.

  Structures of the case are like spending statements in the programming of text. Take a look at the 'Start', 'Stop': value change event. It contains a routine which consists of a box structure. The case structure meets the called Start input terminal (which is in fact the Start button on the front panel). The case structure switches between cases according to this entry. To display the different case just browse the structure of the case by clicking the left and right buttons. There are only two cases: true or false, as the entrance is a Boolean value.

  Now let's take a look at the VI. Take a look at the case "Timeout" of the structure of the event. This is where the change should be made. Change the structure of matter by editing the case. Change the numbers in the structures of the case: ... 20000 to ... 50000 and 20001 at 50001 This should do the trick.

  Kind regards

  Alan Bong

• Control the Structure of the event with text file

  I'm new relativaly in LabVIEW (experience only about 2 weeks). I am currently control a stepper motor using a structure of the event. Similar to the sample code given by LIFA, I entered my settings how the engine not move away, then press a button on the windows before, and it works this way. I also have other equipment that works as well in LabVIEW, as a transnational step; all components operate individually.

  Now, I'm trying to make the more automated system and to ensure that all the different equipment work in the same code. So, I tried to implement a structure of the event using a text as an input file to try to control events. The text file has a table 1 d of numbers going down vertically (only the line numbers change). So, I used a table of index function to take the numbers one by one, use a loop (while loop in this example) to go to the bottom of the column of numbers. However, the event not register the change, even if the indicator shows the value is changing.

  Attached, it's my test code and the text file that I use to try to control the structure of the event. Please let me know what I am doing wrong. Thank you.

  Oh, now I understand what you tried to say. I'm using a loop and a case structure to activate different events with the entries in the table. I thought case structures and event were the same, but you taught me the event structures are used just for the façade stuff. Thank you all!

• Right-click in the structure of the event for Mac OS

  I put a right-click to activate a case of event (with the mouse down? function) in a structure of the event. It works fine in Windows 7.

  But when I try this in Mac 10.10. This does not at all.

  I connected an indicator in the "button" in the case of the mouse down and found the two clicks left and do a right-click returns 1.

  In Windows 7, left click returns 1 and do a right-click returns the value 2.

  Does anyone know how to activate the right click for the structure of the event under Mac OS?

  
  

• How to use the structures of the event for long-running tasks

  I created a state machine that scans a cluster of Boolean controls in a State of 'home '. Most of the States run a Subvi or two in ~ 100 ms or less.

  However, a State run for 10 seconds.

  The code works but the user interface is limited because the controls are outside the cluster because they provide inputs to the structure of State machine case but do not cause changes in the State. In other words, I all orders cluster stacked vertically on one side of the main panel and do not have the flexibility to move the controls to the more intuitive positions on the Panel.

  My question: How can I convert this code in a structure of the event and keep this long term 'event' and prevent that the operator by clicking another button event during the execution of this event?

  Thank you

  You say you have controls outside of your main code... You should really put these inside and manipulate them in a State of your state machine is initialized. This allows you to make changes to the code easier and limits of line entering your outside loop.

  You can do different things to lock the user.

  You can disable specific controls so that they can't be clicked or edited.

  You can use the palette of the mouse to define the busy cursor and disabled again once finished, I do this a lot during treatment when my code something loads the user just clicked.

  One of my favorites is to set a Boolean value in your data that passes through you event titled structure "disable mouse." When the value is True, a mouse down event will effectively reject the event, clicking on disable. I also added an event mouse move where if the bool disable the mouse is set to True, it moves an indicator of string with the mouse by telling the user why it is disabled.

  If you want more specific suggestions, I suggest to post an excerpt of your code, or attach your screws, so that we can better help you.

• Structure of the event in a state machine

  Hi all

  I have a state machine with a sort of stand-by, where a user can select the next button state. I tried using a structure of the event with changing the values to select the next case, but when the state machine is in a specific case and the button of another State on the blocks of all things. I've attached an example, the lights simply stating that you are in the State.

  Thx for your time,

  Bert

  Edit: actually, I miss-clicked

  1. you have not need a while loop around the structure of your event.  With no wired time-out, you will never get a timeout event.

  2. your button events are set to 'Lock Front Panel until end of the event'.  Uncheck the box which.

• How to trigger the value change in the structure of the event

  HII everyone, like the title, how should I trigger the value change event to display a message... Here is my connection... I want to trigger structure of the event to bring up the subvi, when the flame and the led are TRUE State... I have using the node property, but still not able to run event structure... How should I connect? Thank you very much...

  There are several ways you can do. First of all, you need to configure your sub - vi while he does everything you want when you run (in the properties of vi, top most window for example) and to make sure that it closes completely when you're done (when you click on the 'OK' button, for example).

  Spend you need an asynchronous call to the subvi. There are several ways to do so. My favorite one below. You go in the palette under 'Application control' and select a static reference VI. I like this approach because it keeps track of the way subvi for you, as long as the subvi is in the same project. Then, drag the sub - vi on the empty square which will be changes to your sub - vi icon. Then, you connect to an invoke node in the same palette under and select run VI. "Wait, that 's" set to false and the main VI will continue to function after the start of the vi of Sub. Together "Auto Ref" is the best way to go. Otherwise, you will need to follow the sub - vi reference and shut up yourself when you are finished.

  

• Many events in the structure of the event

  Hello

  My GUI application have increased over time and the structure of the main event now contains upward 150 events triggered GUI, mainly buttons both autonomous and in custom controls.

  The performance of the application are no problem but I experience occasional freezes the application that freezes everything just the GUI and what I suspect most code running in the background. It is cleared by clicking anywhere on the front panel of the application and the same problem occurs in the development environment and in a bed .exe. To clarify, the application not falling down or stop, it all simply pauses or freezes and then resumes execution when the mouse click occurs. This happens randomly and at least a few minutes between.

  I'm currently trying to track down the problem but thought id ask here if someone has experience of first of all structures of the event which handles a large number of events, or perhaps seen the same freeze happen in their application?

  Nimgaard wrote:

  With regard to a large number of events managed by a single event structure that I have not really looked into what limit would be, but somewhere under the hood of the code have to watch these GUI controls. On the other hand I have not problems of performance if...

  There is no watchdog, which could keep the change control, it is all managed by WinAPI, the application is just get it registered to receive messages.

  The mouse click event or change of key value chain from interruption managed by the driver running at the kernell windows level.

  Basically, the computer, if there is no user activity, consumes much resources from the PC to the active window with no event regarding the active window with many events.

• Structure of the event inside while loop

  I'm still fairly new to Labview and this may seem a simple question.  I'm doing a Subvi to display, edit, and create configuration files.  I use a ListBox to list all sections of a config file and structure of the event to update the values in each section, when they are clicked.  The problem is that the structure of the event seems to be a break the while loop so that the buttons do not work until the event has executed.  What I would like is the while loop to run continuously and the event to run only when I click in the listbox control.  I hope this makes sense.  There is a peak in the diagram below. Thank you

  There are a number of issues with your code that could cause problems:

  1. You must use the FP. Open method to open the front panel of a VI and of the public Service. Close method to close. I don't remember exactly the problem, but starting with the 7 worm nor indicated that these methods were the preferred way to perform these tasks.
  2. Based on what seems to be the code, the event for the control of Presets of wood should be a change the value - not a mouse down event. After changing the type of event, use the event data NewVal to drive the indexer table index entry.
  3. The buttons Ok and cancel them should be handled in their own events to change the value. The value change event Cancel would exit the loop, while passing the output error (which indicates that cancel was pressed) and default values for the other 4 outputs. The change of the value Ok event would leave the loop by passing the values that the operator had concluded the 4 controls on the front panel.
  4. An event of timeout with a very short time (1 msec) would stop loop if an error has occurred, or the output of the gate AND is set to true.
  5. The wait function is not necessary, as is the case outside the loop structure.

  Mike...

• lost data in the Structure of the event

  Sometimes I'll have data that gets lost in a Structure of the event, or same subVIs that are not performed in events that I know are executed. What would cause this? I have attached a screenshot showing an example where I highlighted to run on.

  Edit: now well attached file

  Make sure you have one tunnel on the other.

• Structure of the event does not run

  Hello

  I have a Board who I am control with loop open using a stepper motor system.  I want to run some tests to measure to what extent and how constantly the motor can move the stage.  How my software works is that I give the engine a position (number of steps), then it runs until it reaches this position.

  The motor itself and then I want to set up a structure of event so that I can give different commands without having to restart the program each time.  The three cases, I want to implement are:
  (1) giving the engine a new job to run

  (2) telling the motor home again

  (3) stop the program at any time

  I watched tutorials on the structure of the event and cannot for the life of understand me why it won't work.  The motor houses himself, enters the while loop and just stays there.  When I change the values, nothing happens.  Can someone help me understand this?

  Riche29 wrote:

  Thank you for the answers.

  Would not has to do with the fact that I do run my software on a myRIO and not my PC, doesn't it?

  Yes, yes it would be.

  The myRIO is an on-Board Unit and has no video output, and therefore is not a concept of events based on user input.  I've never used a myRIO but I figured, would not allow even you put code on the myRIO if we used a structure of the event, but I guess you can have user events so maybe that's why no error was thrown.

  The code runs normally on Windows where I tested it.  I had to disable parts of the House and run the routine because I don't have the myDAQ or myRIO software installed but the structure of the event worked as expected.

  As for the change of Position value, the witness must be in case of structure, not only in the while loop.  If it isn't then you will read the last value not a new one.  You were probably just changes to test things because in the images you posted it was in the case of structure.

• Stop the execution of a loop in a structure of the event

  I tried searching the forums to avoid posting a duplicate, but more I couldn't open most of the vi as they were higher.

  I put in a dummy while loop in an event structire I intend to use. Once I have begin to execute the while loop, I am not able to stop using a control for some reason any the fornt panel control.

  I am not able to change the vale of the shutdown command at all. I tried to create a separate event for the STOP, and I still couldn't stop the program when the While loop was running.

  I guess I'm missing something really small. I would appreciate your comments on this.

  Thank you

  Nevil

  Right-click on the structure of the event and choose 'edit events' in the case that gives you bad.

  Make sure that the check box lock the front panel is not checked.

  I suspect that yours is checked, so your front is locked until the end of the event, so you can never stop your loop.

  

• Structure of the event with sub-panels

  Hi, I tried to find a simple example with a structure of the event and only two sub-panels.

  I found the 'new Event Handler.vi' and I'm doing something with two sub - vi I did 'Add.vi' and 'Mul.vi '.

  To be able to switch between the two sub-panels used in 'New Event Handler.vi', the programmer used a "time surge" which I can't locate

  anywhere, so I just copied 'new Event Handler.vi '.

  I can't get this to work.

  Take a peek inside the world

  Sincere greetings,

  Lasse

  Hi Lasse,

  Yes, there is. If you open the properties of the subVIs Add.vi and Mul.vi (Ctrl + I), you can change in the tab 'appearance of the window' to that custom... There is an option display front panel, when it is called and the close later while initially closed just sellect them. Then, you will have the effect of 'pop up' :-)

  I slightly changed the example, so that can see them in the form of pop-up windows.

  See you soon

  Angel

• Structure of the event: problem with data transfer

  Hello everyone,

  for three days I'm troubleshooting an issue in LabView with the event structures. I really hope someone can help here, because I can't find anything on the entire WEB.

  I had six groups of equal to a VI entry, each containing five checks enum (among others) where the user can specify some configuration of measurement data. I want the program to do is: to recognize if a any of these enum values has been changed and if yes, then submit the values containing the cluster in a subvi then calculates the wiring and affect the material of the ports. In addition, i need to submit the number of the enum element that was changed, so the program is able to clear the user input in the case of a breach (e.g. If the user sets two entries of enum control 1 meter and 2 Group 1 and then tries to set a third counter of entry to port 3, the program displays a message and deletes third entry as the number of entries of counter is limited to 2 per cluster).

  To resolve this problem, I used a structure of the event with 6 x 5 cases (change of enum value 1 Group 1 Group 1 enum value 2 change... and so on until the change in the value enum 5 Group 6).

  

  The problem is that if the user changes a value, the event structure reacts and performs the proper case; However VALUES of the cluster, the user changed are not subject to the SECOND time that an event occurs. It is a kind of a situation, "n-1". For example, if all five controls Enum of Group 1 are 'disabled' first and the user sets enum 3 of 'Meter entry', the structure of the event runs but submits the values previous to the Subvi (all enums 'Disabled'). When the user makes the second change, say that enum SWITCH1 to "Analog Input", the structure of the event is running again and passes the values of the FIRST user to the Subvi editing, then the Subvi gets data "enum 3 meter inlet and all other disabled enumerations.

  In easier words: if I have new values on my cluster "Kanal 1" (left side of the screenshot) and run the structure of the event, on the right side to "Kanal 1" indicator, I get the previous values (n-1).

  The structure of my event is in a while loop. If I create a timeout every 10 ms, and a loop of 250 ms the waiting time, I got the 80% chance that the recent changes are transferred to the Subvi correctly, in other cases I have a delay of the 1 step as described above. It seems to be directly based on the time that I specify the while to wait - but I can't explain it and I cannot accept a less than 100% chance to transfer the correct data, nor can I accept delays of a few seconds for each loop run. If I indicate timeout (infinite) get delayed 1-1 step values in all cases.

  When I specify cases of event to react on "all items value change" of the structure of the event behaves properly - but then I can't handle indicate which element has changed, as the CtlRef of output in case of a structure does not specify "enum 1, enum 2..." but only "Group 1".

  Does anyone have a solution to this? It is certainly a problem with the structure of the event, but I can't understand what to change.

  Thank you much in advance,

  Mr. Boiger

  This is because the terminal is read until the structure of the event runs.   Terminal is read, the event structure is waiting for an event.  The change in value.  Business events are running, but the value is the old value.

  Put the terminal inside the event.

  Or, you can display the connector called "New value" on the side left (stretching down from the border of the node 'CtrRef').  Use a wire one to come.

• How to import in the video editor of first elements 13 clips with the tag structure or the person, location and the structure of the event organizer?

  How to import in the video editor of first elements 13 clips with the tag structure or the person, location and the structure of the event organizer?

  senior50

  On what computer operating system is your first items 13 running? And you have updated 13 to 13.1 still using Help Menu/implementation of an open project? If this isn't the case, please consider this.

  Now to your question immediately.

  I would consider placing your files for organizing items (person, place or event) in albums that you create in the organizer of items for each. Then,

  (a) the content of the album of the opening of the first elements add multimedia/Organizer.

  or

  (b) by selecting your album in the elements Organizer, select the photos in the album you want, then right click anywhere in a selection and Edit with Premiere elements editor selection?

  Have you been there and done that yet?

  Please examine, consider, give more details, and we can then decide what.

  Thank you.

  RTA