Boolean switch until released by using a structure of the event

Similar Questions

• How do I step manually in code that uses a structure of the event, when I want to select a particular event?

  I use an architecture of producer/consumer for an application with a structure of the event in the upper loop. Events are triggered by the user from the control panel using Boolean switches that are "change when you press on" and "release switch. My question is how can I manually step through the code using various events? It doesn't matter what I'm still not in the same event.

  Thank you.

  You can view the code? Is what event still enter? I did have problems step by step in code that uses a structure of the event. You must be patient, but because the application is slowed down a bit and it can take a while to get into the case of the specific event depending on what events you deal. Usually, I place a breakpoint in the case I am interested and run the application as usual. Once I hit the breakpoint is when I turn on highlighting of execution.

• can I use a structure of the event in another structure of the event

  Hello

  Can use a structure of the event in another structure of the event?

  Thank you

  Viviane

  I would put your waveforms in the registers at offset.  You can then use your structure for the main event to trigger on the Show 1... the value change events and process the data, however you need from there.

• How to use a structure of the event in a Subvi

  I am using a structure of the event within a Subvi.  The Subvi has a table constructor that built tables and the structure of the event is used so that when the program runs, it allows you to change the elements of the array.  It works, but when I apply within a Subvi, it does not work properly.  This goes into a Subvi, because it will be part of a much larger progrram, so it must be modular.

  If you are using a structure of the event, it is not a Subvi.  If you worry about modularity, you should not use the structure of the event.

  You seem to have a fundamental misunderstanding of modularity.  An event structure must be placed in a while loop.  If you have a while loop in a Subvi, you have transferred control of your program to the Subvi.  You are not at this stage modular.  Your higher level GUI has no control.  You would have to create a stupid system of variables to pass data down to the loop to stop the loop and return to your main VI.  This is not a good design decision.

  Instead of searching for a way to make something broken, you should spend effort trying to understand what you really want to accomplish.  You should also spend some time to learn how to work the event structures.

  This application is small at the moment and it is already on the way to the unreadable.  It's a terrible thing to do for you.  Break these habits now.  variables are only when absolutely necessary.  Using subVIs to accomplish individual tasks, do not run the entire application.  With the structures of the event, use a value of stop button change event for will not be held hostage to the time-out.  If your variable is '2' in it, you're doing something wrong.  It has to be something different between set points, put it in the name.  If you want to make the subVIs, create an icon.

  But first and foremost, invest time in understanding dataflow

• by using a structure of the event to restore a Boolean control with change in value for the menu ring

  I'm trying to get two Boolean buttons to reset when the value of a ring menu.  For this I use a structure of event defined to execute with a ring value change.  However I have another code that should be run while the structure of the event expected to change value.  I place my structure of the event inside the while loop buttons reset as expected but my other code is not run (except when the value of change). If I place it outside the loop the rest of functions code as expected, but the buttons do not reset.  Any help you offer is much appreciated.

  Hello

  ADD TIME OUT EVEN AND GIVE DELAY OF 100 MS.

  Adds the case-application-timeout event

• reset the timer using a structure of the event

  I wrote a simple code to count the second and the timer can be reset if I press the button "reset".

  It works; However, there are two problems,

  1. when I run the program, the timer takes 1 second to start

  2 when I press the reset button, the timer also takes a second to answer

  I think it's the 1000ms that is connected to the left corner of the structure of the event. Is there a better way to overcome this problem? (the timer starts and resets immediately

  When I launch the program and press the "reset" button)

  Thank you!!

  Dear ivy037

  You can make the time outside the structure of the event as in the attached code.  I would like to know if this is satisfactory.

  Thank you

• How to use a structure of the event with a state machine

  
  

  I don't know exactly what you're asking, but it sounds as if you want a bunch of script tests and if the user says stop, to immediately stop the current test and abandon others?  I'll assume you know how to clear the table so that it will not abandon the others, so I guess that you have wrong to abandon the current test?  If it is indeed the case, the problem is that you are not able to spread the message of the VI FP main which is the GUI for the sub vi which is the test where the test may or not have a GUI (FP visible) of its own.  Threading is the first thing to come to mind, but it will be may not need the use of events.

  You can do this by passing a refnum of the stop button to the Subvi, where you can then add to wait to the structure of business event.

  I have attached 2 screws, mainvi.vi which is just a loop displays the number * 2 (number of seconds since the race) to be called subvi.vi and then check to see if the button is pressed.  mainvi.VI is in no way a state engine, it's just a simple loop for demonstration purposes.  subvi.VI just waits 2 seconds and leaves, this is a better engine State structured with an init State to start a case of survey to wait events and an exit status to clean.  You can change everything as you wish so that he can do what you want.  You will notice that even if subvi.vi is running, it will automatically end when you press the stop button.

  I hope this helps.

  A

• How to use the structure of the event to sort the listbox data?

  I have a VI that contains two list boxes.  The two list boxes are selectable by the user.  This is how I want to interact.

  When the VI is initialized, the first list box will be filled with data.  If the user double clicks on a cell in the first list box, the second list box will be filled by a sorting of the information contained in the first list box a certain way.  I do not think that the details of how these data are sorted is pertainent here...  Then I want the user to be able to double-click on one of the lines in the second list box.  The double of the item clicked in the second list box will be used in an another VI which will then start.

  I have my VI of work such that the first list box will fill the second list box whenever the user double clicks on a cell in the first list box.  To do this I use a structure of the event.  Here is where the trouble begins.  I have a second structure of the event look for double clicks in the second list box, but when I do this, the program crashes.  In addition, I want only the user to be able to double-click on the second list box, if the first list box has already been double-clicked.

  Generally, my question really revolves around the use of the structures of the event in this application?  Can I use two structures of event at the same time?  Is there a better way to do it?

  No, you probably should not use two structures of different events. One, it should work fine.

  The Subvi immediately execute and return? If not and you have the front locked until the event finishes, which would explain what you see.

• Can I use Ctlref in a structure of the event with a mouse to an event?

  I have a large number of controls on a front panel. I use a structure of the event that triggers the movement of a given motor when you press the corresponding button. However, I would like to avoid creating events for identical most of N, so I relied on the use of a mouse down on the front panel event, then retrieve the reference command using the Ctlref node (with gives 'Reference to the control on which the event occurred', according to manual labview) and analyze an array of references to know which engine is supposed to move. However, it seems that this node is not (contrary to what the manual said).

  I found other ways to do what I need (I thought using a table containing details of my controls and the coords in the structure of the event node), but I wanted to know why I can't find this node (that is displayed for the event "value change" for example). I'm using Labview 2013.

  No luck for you. Mouse down on the Panel does not have the refnum control because it does not work on a control. Mouse down on a control has it, and since you can configure the mouse down events on multiple controls in the same case of event, it also provides a refnum of control so that you can still use the order in question.

  This is probably also the question that Jeff might have seen. When you set up multiple events for the same frame that LabVIEW displays only the terminal event that are present in all of these events. Terminals that do not exist in at least a specific event of the multiple events for this image are more selectable.

• How to raise an event (in the structure of the event) comparison function output

  Hello

  I want to triger specific event from a structure of event with the release of the comparison function. I tried several times but the output of the comparison function is not triggered. Please, propose solutions.

  Kind regards

  Mlad

  If you want to use a structure of the event, you must react on the digital inputs, for example as follows:

  

  Notice that the VI is inactive unless a change control (x, y, stop), date on which Boolean values are updated, comparison made, his played if necessary, and VI stopped if you press stop.

• structure of the event a substitute

  Hello everyone and sorry for what I think may be a very newbie question, but I can't understand not just how to use the structure of the event in my program.

  The presentation is as follows:

  I'm using labview for control devices in my lab.  I have to activate something for 30 minutes, then heat it for an another 30 miunutes (the first device is controlled DAQ and the second is controlled GPIB).  While these two processes occur, I monitor a temperature using the data acquisition card.  The two-step process is finished, I have to wait for the temperature to be lower at some point and then start again it.  So, I have to repeat this process for a number of times defined by the user.

  My question is this, I use a structure of the event to handle it all (this is maybe not the best way to do it, if you know a better way, feel free to share!).  The whole process of starting the program, I want to be able to stop it at any time in case something goes wrong, and I would do this by using a Boolean on the front panel, because I will finally control the process from a distance.  Is it possible to substitute a case of the event once it has started?  I have no doubt a 'Wait (ms)' VI in there somewhere to facilitate synchronization of processes, but once the VI begins the program waits until it is done before register you for any other button presses.

  Thanks in advance for any response,

  -daman

  You should definitely read up on State Machines!

  Maybe the link in my previous post doesn't work.  Try these.

  Reference design - http://zone.ni.com/devzone/cda/epd/p/id/6091

  State machines - http://zone.ni.com/devzone/cda/tut/p/id/3024

  ExpressionFlow Blog on policy - http://expressionflow.com/2007/10/01/labview-queued-state-machine-architecture/

  Machine States JKI - http://jkisoft.com/state-machine/

• 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.

• A REPLACEMENT FOR THE STRUCTURE OF THE EVENT

  Hi guys,.

  I find it difficult to use a structure of the event to trigger my code for initialization.

  It's because I have a problem with the values shown in the indicators when I reset my code.

  All I want is something that put my analog output to zero at any time when a Boolean key.

  Is there anything I can use to make this exception using the structure of the event?

  Kind regards

  Opuk

  ZX81,

  1 if you take scrutiny in VI that was attached, there was the structure of the event in the FPGA code.  I can't even put a structure of the event in an FPGA VI.

  2. "always always provide initial values for registers at offset' is not at all an accurate statement and has nothing to do with the Opuk problem described.

  3. it is not replying in this thread.  It was already pointed out to stick with the original thread.  You answer in this thread just duplicate efforts and just disconnect all the conversation of previous conversation.

• Structure of the event can be triggered a 1 event

  I am using a structure of the event to trigger a 1 off the coast of the event.  I thought that I could check the State I want to trigger the event and this thread the Val (signaling) a Boolean property.  Then I created an event to change the value on this command expects the event fires when the value from false to true.  I think it is this writing in Val Signaling property raises the event each time not only when the value changes.

  The attachment is a simple vi to try to illustrate this point by using the iteration count to try to trigger a 1 off the coast of the event on the 10th iteration.  The Boolean 'once' varies from iteration from False to True on the 10th, but the event is fired for each iteration.  Need to run in debugging

  Any help much appreciated

  Ken

  I've seen this confusion on the value of property front of signage. You expect it would only trigger an event, if you write a different value than the control or the indicator has been set to. This is not the case. She fires whenever you write to it.

  Your simplified example wrote to the property value of signage in the while loop for each iteration. That triggers the event value changed whenever you write to it. Notice that the property is 'signs of value' and not 'value has changed the signs '.

  Some of the examples were complex with the authors of notifications and user events. But the easiest way is just to put the property within a business structure node while it is written only when you want that one off the coast of the event. It does not matter what you write to the node if you send all the data for the case of the event.

  If there is a reason you must write to the Boolean value of traffic property on each iteration of the loop you can use the value written in sub condition to run code in the event. But notifiers, queues and the user just looks complicated events.

• structure of the event does not record local vars

  I have a gif of a FPGA based topology I want to show some telesignalisations in.  As the user clicks on the Boolean, vertical lines appear and disappear as they click on it again, showing the current topology of closure.

  To save resources, I opted to use a structure of the event.  So far I put it for internal RX_FAC and RX_TERMXCO4AU you see at the top left of the image.

  A single loop of RX and one TX closure may be on at the time, so one of the first things that happens when the user clicks on the Boolean value is that it defines the values of all other Boolean in the same row of fake, thanks to the use of local variables.

  The problem is - the structure of the event runs only when the user actually clicks the Boolean true or false value, but not if the boolean is false through the use of a local var.  In other words, let's say I RX_TERMXCO4AU true and false RX_FAC.  If I click on RX_FAC to set it's true, then you will notice RX_TERMXCO4AU goes dark/false and RX_FAC lights.  So the value of RX_TERMXCO4AU has changed, but associated with the structure of the event RX_TERMXCO4AU does not run (that's why the vertical line between RX_TERMXCO4AU and TX_FACXCO4AU remains).

  This will make a lot more sense if you run the attached simple VI.  Right now, events exist for RX_FAC and RX_TERMXCO4AU, but it is sufficient to explain the problem I think.

  Any help is appreciated.

  The structure of the event is for events generated by users.  Writing to a local variable is a programmatic change.

  You want to do is write your value to the Value property (Signalling) of the Boolean that will change the value and raise the value change event.