Front Panel of select VI's pop up upon start-up

I have a main VI which organizes about 200 test cases(also VI's). However when I load the Main VI, about 50-60 of the front panels from different VI's load. I've checked most of the settings and can't figure this it out. Is there anything I'm missing. Someone suggested a VI Server...what's that? Is the only way to have the front panel load one at a time, to make the VI's load dynamically?

Let me see if I understand your problem correctly. Are you saying that when you load your main VI, but before you run it, the subVI's front panels are displayed? If that's the case, there's a couple of ways that this could be happening. First, in the VI that has the subVI, right click on the subVI and select SubVI Node Setup. Make sure that Open Front Panel When Loaded is not checked. Second, open the subVI itself and go to VI Properties>Window Appearance. If the Custom radio button is selected, click on the Customize button and see if Show Front Panel When Loaded is checked.

Similar Messages

Bug? Right-click on Front Panel causes selection rectangle!

Originally posted on LAVA: http://lavag.org/topic/12097-right-click-on-front-panel-causes-selection-rectangle/. This post contains an updated description of the problem.
Anytime I right-click on a control on the FP, and dismiss the context menu, I get a selection rectangle. If I don't catch it, moving outside the bounds of the FP will cause the FP to scroll to continue my unwanted "selection". So far this has been repeatable every time.
I noticed that the problem doesn't occur on the Controls pallette, only the context menu for controls. Also, if I mouse over the context menu before dismissing it, the problem doesn't occur. If I select an item from the context menu (which also dismisses it), the problem doesn't occur.
I am running LabVIEW 8.6.1f1 on Windows XP Home SP3.
-Ian
Solved!
Go to Solution.

I once worked in a lab which contained a transformer with its incessant 120 Hz hum. Just when I could tune it out someone would say "What's that hum?" and then it would annoy me again. Similar story in a different lab which had a cooling water drain. Just when I get used to the sound, someone would bring it up.
This behavior has p#$#ed me of on numerous occasions and I am mostly used to it by now. At home I use a track ball mouse which covers a lot of real estate in a hurry so of course I am often scrolling a FP into never-never land. Now you bring it up and I am having flashbacks... (Thanks really, it is time to get this fixed)
I have learned to spot the little circle in the crosshair cursor. When it is missing, you are in selection mode.

Capturing a front panel menu selection in a SubVI

All,
Title is pretty descriptive, so i've got a subvi that's running pretty much in a while loop and I want a menu selection from the parent VI to be able to cancel it. What i've tried so far is passing the reference to the front panel menu and then trying to detect a valuechange/mouse click/ selection etc in an event loop in the SubVI. The problem is it doesn't look like the front panel menu registers the change until after the SubVI finishes executing. How can I fix this?
Regards,
Ken

Hi Ken,
I hope you are doing well today! Before I attempt the answer your question, I
need just need to clear a few things as to what you are trying to do. Are you
trying to stop the while loop in the subVI from the parent VI? And, what’s the
purpose of using a menu selection? If you can post a simple example, that would
be great.
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

How can I access the member of a cluster on the front panel by selecting the label?

I have a cluster of Controls. i would like to choose the element of the cluster by his label on the front panel and then show the value. Does anyone have an idea?

I think I understand what you are trying to do. I've whipped up an example that uses property nodes, see if it helps...
Brian
Attachments:
ClusterSelect.vi ‏35 KB

My front panel controls are disappearing after the vi starts. Anyone one know how to fix this?

I have some vis that ran fine on an older machine, but with the new computer controls on the front panel dissappear after awhile and can be made to reappear after closing and reloading the vi. I am not doing any programmatic hiding of any controls. The controls can also be made to reappear by stopping the vi and selecting them with a tool, but then they disappear again when you run the vi again. I played around with "bring to front" but that doesn't fix the problem and read a post about OpenGL problems associatted with 3D controls. Any ideas on what to try to fix the disappearing controls?
I

If you right-click on the terminal and choose 'show control' and then the control can be seen, then it is not hidden behind other controls, decorations, etc. Just to ask a dumb question: have you right-clicked on the terminal and tried Find --> Property nodes to make sure that the control(s) is not being hidden somewhere in your code? Are you passing any control refnums to any subvi's?
"There is a God shaped vacuum in the heart of every man which cannot be filled by any created thing, but only by God, the Creator, made known through Jesus." - Blaise Pascal

Front Panel binding of shared variables very slow initialization / start

Hello @ all,
I am using a server running Windows2000 and LV 8 DSC RTS for datalogging. All shared variables are deployed on that server.
I am now facing the problem, that all front panels running on the clients using the network shared variables on the server take very long to sync on startup. First the flags on the controls bind to the shared variables turn red, after up to ten minutes they start to turn green. The panels use up to 40 controls bind to the shared variables.
All firewalls are turned off. I tried to connect the client to the same switch the server is connected to. Same problem. Does anybody have a clue?
Thx for your quick answers.
Carsten

While I can't offer any solution to your problem, I am having a similar issue running LV8.0 and shared variables on my block diagram (no DSC installed).
When using network published shared variables, it takes anywhere from 30 sec to 4 min from the vi start for any updates to be seen. Given enough time, they will all update normally, however this 4 minute time lag is somewhat troublesome.
I have confirmed the issue to be present when running the shared variable engine on windows and RT platforms, with exactly the same results.
In my case, the worst offenders are a couple of double precision arrays (4 elements each). They will normally exhibit similar "spurty" behavior on startup, and eventually work their way up to continuous and normal update rates. Interestingly enough there are no errors generated by the shared variables on the block diagram.

Can not open front panel sub VI when running an application VI.

When I create an application of my program a problem occurs. When I select options (press a button or so) from the main front panel that should result in a popup menu (sub VI cal) LabVIEW indicates that something is happening but the front panel does not open. The mouse indicator changes to the time glass so LabVIEW is doing something but the window of the sub VI does not open.
The problem has the same characteristics on several places. There are some sub VI front panels that opens but I ca not find the reason for why these open and not other.

Hi
there are three ways trhough which you can force a subVI to show its front panel
1. open the perticular SUB VI
click File->VI properties select window appearence catagory.
click customize button and select "Show Front Panel when called" and "close afterwads if originally closed" check boxes
save the VI
whenever you use this Sub VI every time it will pop up front panel
2. dont perform the changes suggested in option 1. place the instance of subVI in your main application and if you want that instance to popup a front panel then right click on subVI and Select "SubVI Node Setup" again select "Show Front Panel when called" and "close afterwads if originally closed" check boxes
with this option only certain instances of SUB VI will cause pop up to occur
3. this is the most flexible option. use invoke node to show front panel. in invoke node select show front panel method to popup the VI and use close front panel method to close the pop up window.
Tushar Jambhekar
[email protected]
Jambhekar Automation Solutions
LabVIEW Consultancy, LabVIEW Training
Rent a LabVIEW Developer, My Blog

Button to enable all checkboxes on front panel

I have checkbox controls on the front panel to select various functions of my VI. I would like to have buttons to check ("enable all") and un-check ("disable all") all the checkboxes at once, if desired. Preferably, I'd like to see the boxes activate (show the checkmark) prior to starting the VI -- like they do when you select them one by one. I am fairly new to LabView & am using 7.0 Pro. Any help would be appreciated.
JH

Here's a picture of the code. Pretty simple.
Message Edited by altenbach on 04-05-2006 09:23 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
AllOnOff.png ‏7 KB

Is there any way to prevent excess rows from being added to a table on the front panel?

Whenever I programmatically add rows through a property node I can still go into the front panel and keep adding additional rows through the table. Is there any way to prevent this "excess scrolling"? Maybe grey out the rows or something?
At least I have chicken

Hello Labviewleroy,
You should be able to right click on the table on the front panel and select
Visible Items>>Horizontal Scrollbar or Vertical Scrollbar
You could also consider changing their visibility programmatically using a property node for the control or indicator that you are referencing. You can create the property node by right clicking on the control on the block diagram and selecting
Create>>Property Node>>Visible Items>>Horizontal Scrollbar or Vertical Scrollbar
Cheers,
-Joel
Motion PSE
National Instruments

Remote front panel SSH support?

Does the LabVIEW HTTP server which delivers remote front panel "content" have the option of running in SSH mode? If not, what are my alternatives for securing connections to remote front panel servers?

I am not aware of any options for SSH in LabVIEW. However, there are other ways to keep you remote panels secure. To prevent a user from gaining control of a VI, click the lower left corner of the front panel and select Lock Control from the shortcut menu. This option prevents a viewer from requesting control of the VI on the Web until you unlock it. Similarly, you can regain control of a VI from any Web client.
To configure more Web Server security options, select Tools»Options, select Web Server: Configuration from the top pull-down menu, and enter the Root Directory. After you enter a root directory, Web clients have access only to files in that directory and its subdirectories. All other files on your computer are not accessible on the Web. Select Web Server
: Browser Access to grant or deny viewing and/or controlling access to different IP addresses, so only known clients can view or run your application. Select Web Server: Visible VIs for control over which VIs in your Web Server directory are visible to a client, and to limit the time that a client can maintain control of a VI. Refer to the LabVIEW Help, which you can access by selecting Help»VI, Function, & How-To Help, for more information about configuring the Web Server.
Alternatively, you can program security into the VI itself. For example, you can require a user to log in when the VI first runs, and disable all other aspects of the VI until you verify the login. To do so, place a login field on one page of a tab control, the other controls on subsequent pages, and enable the other pages after the user successfully logs in.
J.R. Allen

Z87-G43 Board Front panel USB Problem

I have installed the board and windows 7 64bit
Updated the Bios and checked everything I could. I do NOT get the connect tones from anything I connect to the front panel USB ports. I have used 2 (KNOWN GOOD, works on other machines) connector sets with 2 ports each, and ALL of the ports have the same symptoms. All of the usb devices have the connect tones when inserted to any of the rear ports. I have not tried the USB3 port for the front because I do not have the wiring and related header connector. My phone, (Samsung GS4) when connected to the rear ports always opens an explorer window showing the Ext SDCard and the Internal memory. when I connect to any of the front panel ports, no sound, no pop-up of explorer, but I do see the device when I manually open explorer and can open the connection manually.
I am at a loss as to what is not right and how I can make it work correctly. If anyone can give me any information to correct this, I'd be very grateful. (Tech Support was no help)
Thank you, and Aloha From Hawaii!

Thank you for your reply.
I have an older Antec Case and I have tried a brand new front panel connector I got from Frys and it acts the same Way. the only difference is that the connector is a one piece assembly that connects directly to the mobo header pins. the one in the case has individual pin connectors. both systems end up with the same scenario. When I plug in a thumb drive, there is no connect or disconnect sound and I still can manually open explorer and access the thumb drive or my phone but nothing pops up to signify any port access.BTW, I am a systems engineer and have spent the last 13 years building machines for a transportation company (bus) My previous board in the same case used the front panel connection and it worked just fine, but since the board died and was only supportive of XP I decided to upgrade to Win 7 64bit and have 16gb ram. All the rear connectors work just fine, but I need all of them so have to use the front panel connection for phone, and thumb drive access. I suspect the mobo has a design problem. The tech support person had no suggestion to correct this problem too! :<(

Front panel of a vi pops up when i start my top level vi how can i stop this

i have a vi that whos front panel should display when the user clicks a front panel button(test instructions),
however this vi pops up when i run the top level vi. I can manually close the vi, but how do i stop this?
i tried modifying the Sub VI Set up properties, but that doesnt work.
Solved!
Go to Solution.

Hi jknapp,
As egraham has pointed out, you can customize the window appearance of your sub VI from the VI Properties. If you go to File » VI Properties, then under Category select Window Appearance and then Customize..., you should be able to control how the sub VI appears. Hope this helps!
Taylor G.
Product Support Engineer
National Instruments
www.ni.com/support

Why am I unable to select the boolean indicators on my front panel?

Hello all,
This has to be an easy one for you guys, but here goes...
I created a front panel with approximately 20 boolean indicators on it (LEDs). I realized that I only had 10 functional, so I made the others 'greyed out and disabled'. Well, now the ones I disabled are functional again, so I want to enable them. Problem is, when I go to the diagram and select 'show indicator' it is still grayed out. I cannot click on the indicator on the front panel to 'enable' the indicators. I cannot select them at all.
I've tried creating property nodes and enabling them that way. They are no longer grayed out when I do this, but I still cannot click on them to move them about the front panel.
All
I want to do is select them so I can rearrange the way they look on the panel, but I cannot click on them.
And, yes, I've had my tool palete on both 'Automatic Tool Selection' and 'Position/Size/Select'. It is also interesting that I can select and move the indicators which I never disabled in the first place.
Any help would be great!
Thanks in advance,
Dave Neumann
[email protected]

"Neumannium" wrote in message
news:[email protected]..
> Paul,
>
> Part of the problem is that I cannot click on them at all. If I try
> to right click, the Controls palette pops up (like it would if there's
> nothing on the front panel).
>
> If I drag a box around them, they are not selected. It's as if they
> don't exist, but they do! They still function -- I can still run the
> test and the booleans react as they should, but they are not where I
> want them to be (the user cannot see them all without scrolling).
What happens if you go to the diagram and double click on the control? It
should take you to the front panel and highlight/select the control.

How to pop up another VI front panel and run this in the main VI?

Hi all,
I want to create a VI, which contain several buttons: like "RUN ANALYSIS 1" and "RUN ANALYSIS 2".
When I click one of them, another front panel of VI jump out and run automatically. When I click on "Finish" button on this VI (the one jump out), this front panel close.
How to complete it?
Thanks,

Hi Osso,
The ability to click on other VIs is also controlled by the Window Appearance. If you follow Dennis' instructions above, but this time change the Window Behavior to modal. You can find more information about the different selections in the LabVIEW Help: Customize Window Appearance Dialog Box.
Regards,
Elizabeth K.
National Instruments | Applications Engineer | www.ni.com/support

Way to plot two variables on a chart by selecting the two variables on the front panel?

Hello,
I have created a VI to control a tensile tester which controls/outputs the following variables: time, load components in 6 directions, tensile displacements, displacements measured by a capacitance sensor.
Is there a way such that there would be only one plot on the Front Panel, and there will be buttons on the front where I can select the variable for the x and y axis when the program is running?
I only know how to make a plot using Chart Buffer using only two fixed variables. The only way I think of doing this is making a plot for every single permutation of variables, then put those plots in Tab Control...is there an easier way?
Thanks!

I have done this a lot in applications to save realestate and simplify the UI. Basically, I create an enum (or typedef) describing the x or y-axis values I would like to display on a graph. Using an event structure, you can watch for a change in these selector and re-plot your graph. You store your data somewhere (possibly in an array) and simply index into that array based on what you want to show. I attached a short example to illustrate this implemenation. Hope this helps. (LV2009)
-cb
Attachments:
Select from multiple curves and axis to plot.vi ‏19 KB

Front Panel of select VI's pop up upon start-up

Similar Messages

Maybe you are looking for