Sub vi front panel opens when main vi opens

When I open my main vi I have one of my sub vi front panels that opens. I looked in the properties for the sub vi and Show front panel when loaded is NOT checked. Is there something else I need to look at?
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please clarify;
Q1)
The sub-VI FP opens when
You open the top VI but BEFORE you run it
OR
The sub-VI FP opens after you start the top level VI
Q2)
If the above Q was after you run....
Is the sub-VI running or paused when it opens?
If it is puased you may have a breakpoint set in it.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

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I try to open two sub vi front panel in third - main vi front panel.

I have two sub vi, and I`d like to see this two vi front panel in main vi front panel window. Does anybody can answer me , If it`s possible?

Click here for a recent related discussion.
Or have you thought about using a tab control? You can organize controls in pages and have those controls call sub-VIs with or without displaying the front panel of the sub-VI. See the Tab Control Properties.vi example that ships with LabVIEW.
From any LabVIEW window, select Help from the window menubar, then Find Examples >> Search, then enter "tab control" (without the quotes) in the box labeled Type a keyword to find:

I created boolean references in my main vi block diagram and copied them to my sub vi front panel. when wire my reference in my main vi to one the input node of the sub vi the wire is broken. the error says its a class conflict why?

i created boolean references in my main vi block diagram and copied them to my sub vi front panel. when wire my reference in my main vi to one the input node of the sub vi the wire is broken. the error says its a class conflict why?

Expanding and clarifying what BJD said;
After you create the temporary sub-VI that BJD mentioned, open its front panel and copy the reference control that LV created when it created the sub-VI.
This reference control will be correct class etc that you need. Use the control to replace the original control that you were attempting to wire up.
The technique of "create sub-VI...copy" always works for me.
There is one more thing that you should watch out for.
The mechanical action of the boolean can not be set for latch action when attempting to read the value using a value property node.
Trying to help,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

LV 8.5 opens all sub-VI front panels

Hello,
Recently I again saw a strange occurrance that has happened to me about 10-12 times over the past year. Here specifically I am using LV 8.5 with the cRIO and FPGA module. When I was running a new RT VI from the developer environment, (deploying to the cRIO) the result looked something like this:
All the sub-VI front panels are opened, and shown in their reserved or running state.
None of these VIs are set to show front panel when called or opened, but all are sub-VIs of the top level VI within the project. It seems to have replicated a "Find all VIs in memory, within the project" and then "Show front panel" Invoke. The troubling thing is that this is not really repeatable, when I have closed all the VIs and run the VI again, it is fine. I have seen the same behavior in LV 8.2, 8.21 as well as when deploying to cFP-2120 or when on a Host computer.
Has anyone else seen this or are there any ideas of what is going on?
Thanks,
Mello
Message Edited by Mellobuck on 12-11-2007 01:17 PM
Message Edited by Mellobuck on 12-11-2007 01:17 PM
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Attachments:
Multiple Windows.jpg ‏117 KB

Well now that I have seen to image, I recall having seen this myself.
Like you, it was when I was deploying to an RT target and I was not able to recreate this behaviour.
It was either an 8.0 or a 8.2 app.
So all I can do is confirm that you are not alone, but can not offer a solution.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

I am having trouble stopping a sub VI from the front panel of my main VI.

Whenever I try to stop my sub VI from the main panel i cannot get it to work. It has entered the value of the switch from the main VI and does not update it within the sub VI after it has started the sub VI and hence does not look for a changed value on the switch. Is there any way that I can get the sub VI to check the state of the switch on the Main VI on each loop?
Thanks
Ross H

Hi,
I am including 3 VI programs, here main vi controls the sub vi, i mean sub vi can be stopped either from main vi or from stop button put on its front panel. Also main vi still works incase sub vi is running.
Hope it works. If above does not answer your problem completely, Pl. do write.
Best Regards,
Nirmal Sharma
India
Attachments:
Main_Vi.vi ‏56 KB
sub_vi.vi ‏25 KB
global_stop.vi ‏6 KB

How can I call the SubVI like a child window one or more times in the front panel of my main VI ? See the example atached...

I would like to create a aplication where I call dynamically the same SubVi many times in the front panel of my main VI ... I saw this kind of programmation in other languages like Delphi, C++ Builder and Visual Basic.
For explanation: I have 10 channels to read in the list, but I would like to see only 3 channels ... Then I will click in the channels choosed of my list and will open the same SubVI 3 times, where each one will show the individual channel.
Thanks for attention...
Cleber
Attachments:
Opening SubVi many times.jpg ‏118 KB

TiTou certainly pointed you down the right path... For a few more details, refer to my post to this thread:
http://forums.ni.com/ni/board/message?board.id=170&message.id=141811
You could use the same technique, except instead of opening the clone's front panel, use the VI reference you have to it to poke it into a subpanel. Please note: I have never actually tried building a VI with more than one subpanel on its front panel, but it should work. Also you will not want to close the VI references because you will need them to stop the clones when you shutdown your application.
Mike...
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How do I monitor parameters from a SubVI on the front panel of the main VI?

Good day. I have a LabView program that I am modifiying (actually it is a National Instruments demo program called Simple PID Demo). On the Front Panel of the main VI, I need to monitor several parameters that are on a SubVI. How do I do this?
Thank you very much for your time and help.
Michael

Hi Michael,
Global Variables should solve your problem.
Looks like you have to pass values from Sub VI that will execute continously inside a main vi.
Look at attached VI
Hope you can implement this type of logic in your program.
regards
Dev
Attachments:
Main_1.llb ‏53 KB

"Open XML Converter" opening when I click "Open in finder" in stacks

Today, suddenly, "Open XML Converter" opens when I click "Open in finder" in stacks or select a folder in Spotlight.
This happens in only one account (mine; I have quarantined admin and guest accounts).
I have repaired permissions a number of times, re-booted, used Time Machine to restore the Preferences folder from before it started up, deleted and re-installed the program and nothing changes it.
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Try reset ipad. Hold down Sleep and Home button for about 10 seconds until you see the Apple logo.

A second web browser opens when I initially open firefox.

a second web browser opens when I initially open firefox. This also happens in Aurora.

I am not sure what it is that you are seeing. Is it possible that Firefox is opening two windows?
If you have two Firefox windows open and close down Firefox, and have your preferences set to open as it was previously then it will open two windows.
You mention Firefox and Aurora. Do you have both of these installed on the same computer ? If so it would be a good idea to use separate unique profiles for each.
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Have a program in which a sub vi front panel pops up when the main vi is loaded

I have a strange problem.
This problem only occures after building an application using LV 8.6 Professional version Application Builder, and I have installed it onto the target computer. It doesn't happen when running the development system.
When I load the program on the target computer, one of the subvi's front panels used in the application appears on top of the main vi's front panel.
This subvi should never appear on the front panel at any time during the program exicution.
It happens to be the Write to Spreadsheet.vi that is part of the standard vi library.
I have checked all calls to this subvi to verify that it has not be modified to make it load or appear when the main vi is loaded.
It is called at 4 different times during the program exicution but in no instance is it set to show the front panel.
Has anyone seen this and if so what was the fix?
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Does the exe file run on your development computer without the popup?
Can you post a VI that demonstrates this behavior?
You've probably already checked, but there are two places that need setting, the SubVI Node Setup, and the File Proeprties Execution tab. See attached jpegs.
Message Edited by Pablop on 09-02-2009 02:20 PM
~~~~~~~~~~~~~~~~~~~~
Paul Johnson
Renco Encoders, Inc
Goleta, CA
~~~~~~~~~~~~~~~~~~~~
Attachments:
SubVI Node Setup.jpg ‏13 KB
VI Properties Execution.jpg ‏32 KB

Reference to control on main front panel fails when subvi front panel is closed?

Hi All,
I'm experiencing an odd bug. In my code, I use a subvi to control a piece of hardware. This subvi has controls for all of the functions of my hardware.
I'm changing the value of one of these controls from my main front panel by running a reference to a knob on my main front panel into the subvi, grabbing the value of the knob with a property node, and then updating the value of the subvi control using a signaling property node.
This works fine when my subvi front panel is open but fails to work at all when the subvi front panel is closed.
I'm new to labview , so any help is appreciated.
Thanks,
Arpan
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What is your LabVIEW version?
Front panels that are not shown are typically not updated and might not even be loaded into memory.
The presence of certain code elements (e.g. property nodes) often forces the front panel to be in memory even if it is not shown, but I haven't studied it in a long time so there might be subtleties. Maybe somebody from NI can give more details.
If it does not work unles the FP is open, open the front panel minimized to avoid distraction.
Can you attach some code? Maybe there are better ways to do all this anyway.
LabVIEW Champion . Do more with less code and in less time .

Opening multiple sub VIs (front panels) in an application

Hi,
I am working on a small process control application. The main VI represents a layout of various equipment (pumps, valves, heat exchangers). Each TYPE of equipment
can be turned on/off through a particular subVI. The subVI is displayed when the operator clicks on the component. At the moment only one subVI front panel can be loaded. I would like to have multiple panels open at the same time; this to include multiple instances of a same VI and different subVIs.
I have tried to set properties in the WindowsApperance dialog box but cannot acheive the desired operation.
Any suggestions?
Thanks

Trust my personal experience: You do NOT want multiple dialog windows open. The users will hate you and curse your name if you do. You really want to use subpanels and limit what the user can do. Subpanels are a way of inserting a VI's front panel into another VI's front panel. So you want to have a section of your main front panel that the user can load whatever control subVI they need.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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Open sub VI front panel in a tab-- Possible?

Well, the question is basically in the subject: Is it possible to call sub VI's and display their front panel in a tab. I do NOT wish to have the front panel in a new window when called.
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_Faust wrote:
Well, the question is basically in the subject:<...>
The answer is also basically in the picture:
You can find SubPanel element in the same palette as the Tab Control container. Place a SubPanel on the Tab Control and wire a reference of the VI whose front panel you want to display.
Message Edited by Giedrius.S on 02-13-2010 11:08 PM
While evaluating my code please have in mind that I am a LV novice. Therefore sometimes my code might violate some coding rules that I have to learn about myself. But how else could I do that...
Chart zoom with "Mouse Over" effect

Is there a way to place a button on the front panel that when clicked gives a pop up dialog box with more info in it?

Hi Everyone,
The simulations that I am creating are very simple themselves but are intended for use in a classroom setting to help students learn more about the theory being demonstrated. I am hoping to be able to place a "Help" or "more info" button on the front panel so that if a student wants more info about the theory they can click on it and a pop up appears with background info on it. It should also have a second button to close it and return to the main front panel again. Can anyone lead me in the right direction?
Thank you!
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Use an event structure on the main vi that when the button is clicked, launches a "Help" sub vi. Inside the sub vi (with the properties set to load front panel when called of course), use another event structure to wait for the button of the subVI to be clicked so you can return to the main VI. Do you need help with using event structures?
Charles
Charles Chickering
Architecture is art with rules.
...and the rules are more like guidelines

Application front panel takes long time to open

I have an application that will open quickly on one computer and takes a long time on another. What is happening is the icon is displayed in the task bar but the front panel will not open for some period of time. Both computers are running Windows 7 and the application was built in LV 2010. The applications main purpose is capturing images from a USB camera. The communications to the camera is done using .NET components that were developed by the manufacturer of the camera.
I was hoping somebody could give some ideas on where to start troubleshooting?
Terry
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I've had this exact issue on a computer that couldn't access the network.
It is because .NET is trying to access the network. Can you run this application on a computer connected to internet ? I believe you have to uncheck some options
Control Panel --> Internet options --> Advanced
I believe the three I unchecked were: "Check for Publisher's certificate revocation", "Enable Integrated Windows Authentication", and "Check for Server certificate revocation". I am not sure about the exact 3 I unchecked, but give it a try. Good luck !
Kudos always welcome for helpful posts

Sub vi front panel opens when main vi opens

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