How to update front panel immediately with any control change in LabVIEW7.0?
I have a lot of controls on the front panel. I want my 3D plot to be updated with any of them changed. Currently only one control's change can result in the update even if I do have done changes on other controls .. that's to say, only one specific control's change can activate the front panel updating ... That's not what I want. So how to make the front panel updated immediately like VC?
Many thanks!
I solve this problem by combining the event structure with a classical state machine. The classical state machine is a case inside a loop with either an enum or string shift register defining the actual state. In the idle case of that structure is the actual event structure which handles the UI.
Whenever I need to trigger a specific action which could happen from multiple locations I actually place the handling code in a specific case in the outside state machine and just wire from the actual event case the according state out to the shift register.
This architecture allows for a very flexible and extende state machine programming with the event structure doing all the UI event handling and the state machine doing the more involved actions or series of actions
Rolf K
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions
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Do you know how to create Front Panel like Web,
Do you know how to create Front Panel like Web, I mean like we pointed the word and click it will do another process instead by clicking push button.
If possible, i can click the link in the table... Any idea anyone
Solved!
Go to Solution.Hi ezam,
can you define more clearly exactly what you would actually like to do, and ill have a further look into it. I think smercurio_fc has understood it as I have, and is right with the activeX.
any way, give a shout back with exactly what you want to do and we see what we can do,
Richard
Richard S
Applications Engineer
Certified LabVIEW Associate Developer
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[General Question] redrawing and updating front panel objects
Hello,
I have several questions on this topic.
1) Is there a difference between redrawing and updating the front panel? (I assume so, but when a control is updated it will be redrawn at the same time, right?)
2) Is redrawing = rendering? In the case of decorations I think they need only to be rendered once (if fix/static) and stay in memory so that it is available for the gfx-card...
3) Are decorations redrawn or updated by LabView with every loop?
4) Is there a way to prevent LabView from redrawing and/or updating front panel objects (like controls, indicators and decorations)?
When I put indicators into case-structures they are only updated when the case in which they are placed is executed but they will be obviously still redrawn.
In another case when I disable visibility of those indicators they will not be redrawn anymore but be updated in the background.
So when I put these indicators into a case-structure and combine it with toggling the visibility I could stop LabView from updating and redrawing them.
Is this correct?
Is there another way to prevent LabView from redrawing single objects? (at best leave them somehow visible)
Many thanks in advance!Nocturn wrote:
Hello,
I have several questions on this topic.
1) Is there a difference between redrawing and updating the front panel? (I assume so, but when a control is updated it will be redrawn at the same time, right?)
2) Is redrawing = rendering? In the case of decorations I think they need only to be rendered once (if fix/static) and stay in memory so that it is available for the gfx-card...
3) Are decorations redrawn or updated by LabView with every loop?
4) Is there a way to prevent LabView from redrawing and/or updating front panel objects (like controls, indicators and decorations)?
When I put indicators into case-structures they are only updated when the case in which they are placed is executed but they will be obviously still redrawn.
In another case when I disable visibility of those indicators they will not be redrawn anymore but be updated in the background.
So when I put these indicators into a case-structure and combine it with toggling the visibility I could stop LabView from updating and redrawing them.
Is this correct?
Is there another way to prevent LabView from redrawing single objects? (at best leave them somehow visible)
Many thanks in advance!
redraw vs update
Yes threr is a difference. A control is redrawn when LV decides to update the GUI. Look into "syncronous" setting for controls that forces update when value changed. These tags and thesse tags may help out abit.
Q2
Not sure about equality but decoartion may need redrawn if there is overlap of chanable objects.
Q3
i have observed decorations that failed to update on occation so I suspect they are only update when required.
Q4
LV will update the value for a hidden control but will not update its image. Same if the object is ona hidden tab page.
No wawy that I know of to prevent an update of a single object with out going to extremes. The Front pnale property "DeferFPupdate" will inhibit FP updates while true and allow then when set false. I use this when doing a lot fast GUI updates so allow the changes to accumulate and be apllied only once.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
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How to make front panel as Generic
Hi all ,
I need to know that how to do front panel reuse.
Here i am using two front panel to do some work .
But both the front panel do the same work ,
I need to use create one front panel make them as generic .
I C# can able to do front panel generic .
In labview how to do it .
It helps me lot ..
Thanks in advance .,
Attachments:
fp.vi 11 KBYou can group the controls as a Cluster and make a type-def of it. That's probably what you're after.
/Y
LabVIEW 8.2 - 2014
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How to embed front panel in FP-2010
hi
1. is FP-2010 support "front panel embedding"?
2. if yes then how?
regards
mazharHello Mazhar,
Thank you for contacting National Instruments. If I understand your
question correctly you would like to know how to utilize front panel
communication on a Fieldpoint 2010. If you are just trying to view the
Front Panel of your Fieldpoint VI on your development computer then you should
be able to open up the front panel on the development computer and see it
running. However, if you are trying to communicate the information from
the front panel to a non-development machine there are a few different
methods. Here is a knowledgebase
article that explains some of the different methods that you can use.
Here is some more information about setting
up a remote front panel for a Real-Time target executable that also may
assist you. Please let me know if you have any further questions or if it
seems that I do not fully understand your question. I hope this helps!
Thanks!
Bob H
Applications Engineer
National Instruments -
how to get front panel sound for me headphones, i have audigy 2 ZS.
Works Great. Thanks
!!! Although .... the gain on the front mic is very low compared to the rear mic jack. Instead of using the x0 pin plug for the mic, I configured/spliced the front mic wires into a (rear) pass through /8" jack lead. Now, the front panel mic is at full output. I lose the?rear mic input, but I'll never use it now that I have front panel input. -
How can i access remote front panel in RT with LabVIEW run time engine in client PC
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I have developed the RT application with cRIO 9075 integrated chassis. And i have access its remote front panel in client PC. Now i want to access the remote panel in the client PC without having LabVIEW runtime engine. If i connect the remote panel with that client, it shows only the vi border. i doesn't downloads the front panel.
How Can i access its remote front panel without LabVIEW runtime engine in the client PC?You cannot view a remote front panel without the LabVIEW runtime - the LabVIEW runtime is what makes the remote front panel possible. What you will want to do instead is likely create a Web Service that you can access from a remote PC without requiring the LabVIEW runtime. However, this will require you to develop a web-based HTML or similar UI to interact with the VIs running on your system - NI hasn't yet created a way to export a LabVIEW front panel as an HTML'ish page.
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LabVIEW ARM break after update Front Panel during debug
I try to debug the vi by Ulink, the vi just show the LED blinking for 500ms on/off with while infinity loop, after click run button the loop continue working about 5 second and then break button actived with front panel update. Is this normal working?
Thank youAfter I click Run button on the toolbar the vi start ranning, the LED blinking show on the hardware but not update to the vi front panel, around 3 second the vi stop (like a we click on Pause button on toolbar) and update the status LED to front panel.
I used ULINK1 for this example, I don't know this cause of the problem or not.
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vi_stop.JPG 25 KB -
How to open front panel of a VI running in RT.
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I have an application to read the encoder position using the cRIO program. I have made an executable and this application runs as startup application whenever the controller reboots. Right now, i am accessing the VI of the startup exe through Remote Panel connection. This works fine but everytime i close the remote panel , i have to reboot the controller for the next view.
So is there any alterntaive to open the front panel of the VI.
I tried using VIServer but ran into errors. (i tried using front panel -open property node.did not work)
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Please let me know how to open this VI.
Thanks.Hi Ben,
When i close the remote front panel the first time, i am terminating the RT VI which is running on startup.
So i had to reboot everytime to access the remote VI. I guess that the VI (exe) should be continuosly running when the RT is started up. The remote panel only should be opened and closed. After I close the remote panel , i want a windows VI to be opened up.
I have a Windows VI which programmatically opens connection to the RT server for opening the remote panel. The VI runs. When the user clicks Exit on this RT VI, the VI running is stopped and then another windows VI opens up. This works fine for first time. Since the RT VI is terminated, second time , if I run, it says, VI not in server memory.
Is there a method to close the remote panel programmatically in the RT VI itself. I have a Exit button in this RT VI, so if the user clicks, Exit, the program has to be running, but the remote panel has to close. There is a method called close connection to client , but this does not work in RT , as this requires VI path.. Right now , when the remote panel RT VI is launced, to close the remote panel, i click on the 'close' button on the VI title bar. Again when the remote panel is launched, there is no error. but is there a method to close the remote panel in the server(RT VI itself). i have attached the VI.
Thank you.
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Dummytest.vi 39 KB -
Hello
I am working on a project which requires me to obtain the front panel coordinate of a marker placed on a 2d picture of a map. The map is being obtained by sending http request to google. I am using static google maps to obtain the map. Below is a picture of front panel with the marker pointing at a location on the map.The position of the marker keeps on varying around the picture as i change the input location. Hence i need a way to record the changes in position of the marker on the map.
Thank you
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front panel display.png 84 KB
front panel 2.png 207 KBtry this
http://sine.ni.com/apps/we/niepd_web_display.DISPLAY_EPD4?p_guid=B45EACE3DF1156A4E034080020E74861&p_node=DZ52505&p_submitted=N&p_rank=&p_answer=&p_source=External -
How to set front panel size to be same as one led?
Hello All,
LV2010
In documentation reads that minimum front panel size is one pixel. I need to create front panel which have same size as one led (see attachment). I'm not able to make front enough small just by dragging window borders. I also tried to change front panel size from File->Vi properties ->Window size but that didn't helped. How I can set front panel to smaller size?
Attachments:
Small_front_panel.vi 6 KBI think I got it
In the window apperance option I removed everything except "Allow user to resize window" And the Run options. Then I ran the VI (continuosly since there is no loop) and resized it. After I stopped it, I then removed "Allow user to resize window" from the window apperance options.
P.S! If you try to resize my Vi now, it will pop back out for some reason.
Regards,
Even
Certified LabVIEW Associate Developer
Automated Test Developer
Topro AS
Norway
Attachments:
Small_front_panel (1).vi 6 KB -
How to activate Front Panel Wait in LV7.1?
Dear list,
I am a new comer here. Thank you for your help.
I have a question: when I try to use the "Wait for Front Panel Activity", the time sequence looks just skipping this without doing anything. Can someone help me to take a look at the code, to see whether it is a bug in LV7.1, or there is better solution to this? I am using WIn XP SP2, LV7.1 .
I also saw this post but no one has answered yet: http://forums.ni.com/ni/board/message?board.id=170&message.id=104403&query.id=26578#M104403
Thank you!
Attachments:
TestFrontpanelWait.vi 26 KBPlace an indicator on the loop counter [i] and you will see that is is waiting just fine. Of course any front panel activity (mouse down, key down, etc.) will terminate the wait.
"Wait for front panel activity" is realtively crude tool to pace a loop. You might want to use an event structure instead, e.g. for "OK button: value changed". What is the program actually supposed to do?
You should also eliminate the local variable, it just complicates the code and requires an additional copy of the data in memory. Instead, you can place the string indicator terminal after the case structure and wire the strings from the various cases to it using a single output tunnel. The numeric indicator should be blue (right-click..representation..I32) to match the datatype of the wire.
LabVIEW Champion . Do more with less code and in less time . -
How to hide front panel objects behind other front panel objects
Hi,
I need tho change an existing project and to make it simple just want to hide some front panel objects behind others. But I can't find how to put the one I wnt to the front hiding all others. So now there are some in front that should be hidden.
Is there a button or menu item "Move to front / back" like in many other programs?
Thanks
Martin
Solved!
Go to Solution.Hi Martin,
what about the link I provided in my previous post? What else do you need?
What about the chapter "fundamentals" in the LabVIEW help?
Going the way "Fundamentals -> Building the FrontPanel -> How-To -> Reordering Objects" seems rather logically to me…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
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