structure of the 2011 event

Similar Questions

• Structure of the multiple event

  Hi all!

  I have a headache off the coast of this problem.

  Example:
  I have a value called: numbers. If I change this value must go in the structure of the event and run the ' numbers: change in value.
  And I have a button, if this button changes, I want it to run as ' number: value change.

  Is it possible to use more then 1 event. As: "numbers: value change gold button: change in value.

  I can't understand it. Could someone tell me it is possible, and if not, how can I solve it?

  I hope someone can help me!

  Thank you!
  Rick

  Hey Rick

  Pretty easy to implement. You just need to add another condition to the case of the event:

  

  I hope that this extract VI will illustrate this (just drag it in LabVIEW - FYI, it is made for 2014):

  

  See you soon

  J

• Structure of the Query event

  I want to create an event that meets a button on my front and a text entry area that tells the event how often to repeat the code that is inside where I've specified.

  The event must start executing the code as soon as the button is pressed and repeat the event for example every 100mS until the key is released.

  If anyone has any ideas, I'd be happy to hear. I use LabView 7.0

  

• How to manage the structure of the event with two loops

  I have a question about the structure of the user event with 2 buttons?

  key 1: START LOGGING DATA

  key 2: STOP LOGGING DATA

  How do I control my

  structure of the event so that it will work? because now that the loop is save data... I can't stop the loop, when I clicked on buttons.

  

  

  

  super_saiyans wrote:

  the problem with moving it is that I don't have control of the DATA RECORD STARTING?

  Of course, you do.  When you get your press conference button, you say your state machine to move to the State of logging.  You must also make sure that you return to visit the State to wait for the event to check out the events of the stop button.

• Time-out in the structure of the event

  Hello

  I try to configure the time-out period in the structure of the 5s event using the loop, as shown in the picture as an attachment. The problem is that this time-out event occurred only when I code debugging and does not happen when I run the same without debugging. Any suggestions on this?

  Thank you!

  OK, just use VISA Read to read the first three octets.  Then do another set VISA Read the number of bytes defined in dlen.  If the data does not, then you will get a VISA expiration time.

  

• a few seconds "turn on", how can make I make in the structure of the event

  Hi, friends of LabVIEW

  I want to leave user click and hold down a button for a few seconds to turn on a device. Using registry item and history of shift I can make it work. I wonder how to implement it with case and structured event. Which case should I choose? mouse up?

  I have attached the test code as well.

  Thank you.

  

  I'm sure there are a lot of possible solutions, but here's a way to do it with a structure of the event. Mechanical action of the button is "Switch release." Pressing the button disables the output and sets the timeout of the event at certain time structure. The timeout event switches the output to true. Any other event resets the timeout to-1 value. Unfortunately, it seems that the tool gets messed up the image, so the VI is thus established.

  

• 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.

• Structure of the event to local variable

  Hello

  I use a control structure and the table event to detect changes in the value of table.

  At the beginning, I have made changes in the table (for execution) and structure of the detected event.

  The next step was adding a parallel while loop in which I write for the control array (using the local variable).

  During execution the layout of the table changed indeed, but the structure of the event is a not detect it.

  I have attached 2 digits: 1) loop of the structure of the event 2) the parallel loop.

  It is possible works in such a way?

  How can I make the structure of the event to detect changes in the software in the control array?

  Thank you

  Leonid

  Changes made via a local variable are not the user events, so the structure of the event will not detect by definition. You must write to the command by using the property node "Value (follow the signs).

  That said, your small watch of your code starts to raise red flags in my mind with the use of variable and global variable local. While it's not bad, their abuse can lead to the poor programming architecture and race conditions. Perhaps you should consider downloading your VI any kind can someone take a look and offer suggestions on improving it.

• 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 without user interface

  I tried a quick and effective solution for a structure of event that is not a case of timeout and is part of a vi that has no user interface, but I have sent configuration data to the structure of the event.

  Let me be more clear: I have a camera that generates several events taken by a loop with the structure of the event inside.

  The provider of the camera give me this example of Labview code with all the events I'm interested and how they are implemented. I should mention that when you write a command of camera that a response to an event, but when you connect first to the camera there are more than 100 events generated by the latter, or when you download camera there are also several events. When there is no communication to the camera, the structure of the example event is inactive. The example includes a user interface to change settings and the program responds very well.

  I have to integrate this camera in great demand in which camera photo will be configured in a pragmatic way with number of the type of user interface in the example given by the manufacturer of the device.  First, I tried to design a loop with timeout cases in which a queue can send the data to the device setting configuration. Everything is good until the download when code needs to hold events in a certain way; in my case, an event is taken another goes to the time-out period and so on. After two sets of 100 images download, during the third round Labview gets blocked (Labview not responding) and I have to kill Labview. I got designer of the camera that if camera events are not taken they are kept on a pile and when the battery is full causes the Labview locked.

  Maybe I give too many details, but the question is: how to communicate with a struct event that is not a case of timeout and does not part of a user interface vi (it doesn't have a sign in my application)?

  Oops... Sorry about that.  I've attached an example what I'm talking about here.

  -Austin

• More than a user sources for simple event structure of the event

  I have five different sources, I want to use to generate the user events using the structure of the unique event, acting as a producer loop. Is does not seem to be possible to use five different sets of create/generate user for a single event events structure and the structure of the event does not have the ability to add dynamic event hydrants more than once. Is it possible to do this by using the events structure and user event

  Kind regards

  Austin

  And again in LV2010, (good guess?)  I think this is what you need.

  Michael.

• recording of alarms in the structure of the event

  I am currently using LabVIEW 2011 SP1 and DSC module. I can record dynamically variable messages shared in my structure of the event; However, this causes an event when the variable goes into an alarm condition. I also need to know when the alarm clears.  Any ideas?

  I found the solution. I set the alarm auto acknowledge and then he raised the clear on alarm event. It would not work with him the user value recognition.

• using the structure of the event in the LabVIEW classes

  Hello

  I'm new in the use of LabVIEW classes, so don't know much how I can use them.

  In my main program, I have clusters with five elements in each. The elements are controls two States and in some groups, there are three States controls. The user will press the buttons (controls), and different things will happen. In my first program were I not using classes, I had a structure of the event and the controls were cases of event in the structure.

  Is it possible to somehow use an event of cases in one of the methods that is created in the classes, so that say, that's not in the main program?

  I have attached two photos: I wanted to have a structure of the event in servoTouchEvent (in left.tri.lvclass) who is a child.

  Let me know if my explanation is not clear.

  Grateful for the help!

  Hello

  Yes, you can have a structure of the event in a Subvi rather in your main VI of top-level UI. The trick is to use the 'Save for events' and passing in references to orders that you want to have the event trigger structure for. The refnum output since the function is entered in the terminal of dynamic event of the structure of the event who could live in a Subvi. You can add instances of event where you will see these control events as dynamic events then you can do something with. These excerpts from shows all the code in a simple diagram, but the stuff in the structure of disable diagram could easily transformed into a Subvi:

   

  All this can be done without classes. What will buy classes you include the ability to encapsulate your screws and also perform different code based on what object on the hierarchy of the parent-child classes is on a wire. If the behavior of your code is different between 2-3 State and controls (which I do not know what state controls 3 you are referring), you can take advantage of the classes.

• major error with the structure of the event

  IM under LABVIEW 13.0 PRO

  I don't know when this strarted bug happening, but now when I add a business to a structure of the event. Freezes in LabVIEW. I have to close labview with the Task Manager.

  It doesn't matter what code I'm working with, even a new VI, with nothing else than a structure of the event.

  I tried this on my desktop PC, my laptop and my CPU DAQ.

  The error occurs on my desktop and my laptop. But it does not occur on my CPU DAQ.

  Whenever I click on add event usually case, you get a popup to configure and add cases, but with the popup error never comes to the top and labview crashes.

  Theres no code to share the problem ocured when adding events to the event structure. It happened with any structure of the event, in any code, all the time.

  I spoke to an engineer of apllication of labview and suggested to delete the labview.ini file located in the installation of labview directory. I did this and the problem was solved.

  Still not sure what caused this to happen.

• Structure of the event in primary vi and sub - VI with queues

  Hi all

  I have an application that uses the architecture of producer-consumer in which a queue transmits messages of a main VI by a Subvi, in response to the events of the user in the front panel. Inside the Sub VI, the queue is removed and treaty based on the corresponding message, and the result is displayed on the façade the sub of VI. User events are captured in the main VI using a Structure of the event. This works as expected.

  However, I also the controls on the Panel before the sub - VI to change the queue. My approach is to have another structure of the event in the VI sub for this. However, while the events in the main work of fine VI, events of sub - VI never treated.

  A simplified sandbox VI of what I'm trying to do is attached. As you can see, the main VI events are triggered as expected, but events in the sub VI are never triggered.

  I watched this white paper: detect an event in a Subvi from a high level VI , but it's not exactly what I'm trying to do. Instead, I'm just trying to detect an event generated within the Subvi. I searched this forum and found some research related, but none of them seemed to answer what I'm trying to do.

  Thank you

  Matt

  Your major issue here is the loop location.  While the structure should be inside the Subvi to make a message in the appropriate queue manager.  In fact, you should have 2 loops within your Subvi: 1) the QMH and (2) of the event loop.  You must use a user event to congratulate the event loop in the Subvi to stop.  You should NOT use the time-out of the Structure of the event unless you absolutely must.  And since everything in the Subvi is the message function, you do not have expectations.  They will be inactive (no CPU using) when there are no items to process from the queue or queue.