Front Panel View Find Home Key

In the Panel View, I am looking for an equivalent key such as Ctrl+Home to press to get me to the location of the origin on screen...Anybody know this one?

Hi Jack,
the [0,0] is gone here
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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Front Panel Views in Network Assistant are Incorrect

Hi, I am having problems with the network assistant not showing the front panel view's correctly when connecting to our stack of 3850's. As can be seen in the attached image of 3 switches they show that identical ports are enabled on each one. Switch number 3 should actually be all grey as no devices are connected to this new member. The Network Assistant Version is 6.1, Is there a way of fixing this?
Thanks
Phil

Hi Miguel,
It is possible to programmatically set or change the position of front panel objects. (for example: http://digital.ni.com/public.nsf/allkb/4D0DA06B43195B3F862572F3000AF2D3?OpenDocument) However, if you haven’t intentionally done that, it seems unlikely that it is the problem.
Have you tried copying the entire block diagram in to a new VI to see if the problem persists? While it is unlikely, you are right that it is possible for VIs to become corrupted. I’ve never heard of a situation like this except in the situation where the settings Tom had you check have been changed. Here is some information about those settings:
http://digital.ni.com/public.nsf/allkb/7567EF257B9CFDF986256F630073228F?OpenDocument
Since there was no rearrangement when you copied the front panel to a new VI, you might try copying the block diagram a little bit at a time to see if there is some particular part of it that creates the problem somehow.
K. Johnson

Why cannot the block diagram view of a VI show the "connector pane" view in the UR corner, like the front panel view does?

Perhaps there is a good reason for this that I just haven't figured out. I haven't seen any questions about it searching the NI site, however.
But it just seems totally inconvenient to always have to go to the front panel to get to the connector pane view, especially if some of those connectors are hidden. Then I have to go to the block diagram, guess which control/indicator I want to unhide, go back to the FP to check it on the connector pane, then go back and hide it again, and repeat if necessary. Even if the C/I is visible on the FP, it's still an extra step or two.
When I'm building connections using the block diagrams and planning where to put connectors in subVIs so they would be easier to wire up (line up inputs/outputs on sides, not have to go top-to-bottom, etc.), it sure would be nice to be able to work totally in the block diagram realm.
Cameron
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Solved!
Go to Solution.

Yamaeda wrote:
Good idea, put it in Idea Exchange!
It has been there for a while already. No need to duplicate....
LabVIEW Champion . Do more with less code and in less time .

Moving controls about on a VI's front panel. How do you get a reference to a 'grouped' set of controls?

Basic problem (annoying, if not disasterous - but common - at least for me):
When you are trying to sktick two different VIs together and you copy the block diagram of one to the other, it sticks all the controls in the middle of nowhere. THen you have to spend about 10 mins dragging the controls screen by screen from one end of the diagram to the other - sometimes over 15 screens. Surely there has to be a better way?
** Incidentally you might think that labview would have these sort of settings in the 'properties' of the control on the right click menu - but no joy.
I guess the obvious thing is that you can write a VI which will get a reference for a particular control and then say set it's position (x,y) to zero. Only thing is that generally there will be a selection of controls, and often they will be organised nicely - after getting them to zero you don't want to have to reorganise them again. I tried grouping the controls, but then the problem is - how do you get a reference to a group of controls. If you move one of them it doesn't keep the spatial arrangement. At this point i have got lost - and easily spent more time than it is worth fixing this problem.
Any thoughts?
Solved!
Go to Solution.

If I understand you correctly, when you copy the block diagram from the second VI to the first, the controls of the second VI end up in far left field on the front panel of the first, correct? I think these added controls will maintain their relative locations among themselves so you should be able to find them all as a group out in left field. Then it's simply a matter of how to get them to enmasse join the rest of the controls on the front panel. There are a couple of easy ways to do this. There is a button on the toolbar at the top of the front panel window that allows you to reorder/group/ungroup front panel objects. You can select all controls/indicators out in left field and "group" them together. (As an alternative, you can also drop them all onto a tab control which will act as container for them). Then you select this group and with it selected scroll back over to the existing front panel and find and ALSO select (hold down shift key) a control/indicator from the existing group too. Then with BOTH the existing control selected and the new group (or tab control with the new group) selected you use the ALIGN buttons to quickly bring a corner of the new group into alignment with the old control. At that point you can ungroup the new stuff and move it where it needs to be.

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 KB

Place 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 .

Configuring Remote Front Panels on a Real-Time Target,smart camera,but there is no image in the web page.

I do see the web page, but the image itself is not loading.i know a problem is with the installation of the LabVIEW ActiveX plug-in or the IMAQ ActiveX plug-in. The LabVIEW ActiveX plug-in is required for ALL remote front panel viewing, and the IMAQ ActiveX plug-in is needed for VIs that use the Image Display. how can i do ?where can i get the the IMAQ ActiveX plug-in. help me！

Got it working, after much experimentation. Seems to require installing exactly the right combination of items on the RT target, as some items (web services? web configuration? the "application web server"?) apparently run a separate web server - or instance of the web server - on port 80, which prevents remote front panels from being served on that port.

HIde Front panel - enjoy Ctrl-Key shortcut

It is not a question, it is a link to a good old idea:
http://forums.ni.com/t5/LabVIEW-Idea-Exchange/Allow-ONLY-the-Block-Diagram-to-be-opened-Without-Fron...
and Ctrl-Key shortcut attached.
Shortcut hides (including taskbar) and restores front panel window.
It always activates block diagram after all:
If you use shortcut with the hidden FP, it will activate block diagram (unlike simple Ctrl+E activates front panel)
Attention! It will be hard to find VI, if you have hidden it's front panel and closed block diagram - that is why we still need this to be integrated into LabVIEW
PS Use: Place into C:\Program Files\National Instruments\LabVIEW 2011\resource\dialog\QuickDrop\plugins and set shortcut in VI Shortcut window (Ctrl+Space -> Shortcuts -> Ctrl-Key Shortcuts)
Attachments:
Hide front panel.vi ‏19 KB

It is a custom quick drop shortcut: Labview description is here:
http://zone.ni.com/reference/en-XX/help/371361L-01/lvhowto/qd_keyboard_shortcuts/
Place the vi to C:\Program Files\National Instruments\LabVIEW 2011\resource\dialog\QuickDrop\plugins
Next time labview launches, it will be available, but you need to set a quick button for it:
Press Ctrl+Space, it will open Quick drop window.
Press Shortcuts..., switch to Ctrl key shortcuts tab (see picture)
Set the button (E) for the selected plugin vi.
Next time you press ctrl+space, followed by Ctrl+E, LabVIEW executes plugin vi.
Correction for my description: if the front panel is hidden, closing block diagram closes the vi (with confirm dialog, as usual). This is not a problem
Attachments:
Untitled.png ‏28 KB

View front panel by going to a registered domain name

Hi all,
I have a registered domain name, say, www.frontpanel.com
By configuring a router, I can now view a running LabVIEW front panel within campus by going to 128.200.xxx.xxx/frontpanel.html, my questoin is, how can I view the frontpanel from outside of our campus. Say, I have a registered domain name as shown above.
The LabVIEW is version 2012, and the system is Windows 7.
Thanks for any help,
-Chen

This has nothing to do with LabVIEW but...
You need the network to be configured to allow external requests to the PC and to set up the domain name to point to the external IP address of the computer.
If it were a home network, you'd configure your router/modem to forward requests on the ports required (port forwarding port 80 for the frontpanel.html and any ports that Remote Front Panels needs) from the internet to the PC that is running the Remote Front Panel VI.
For the domain name to work, you need to configure it's DNS settings to point to the external IP address as above. If it's a static IP address then that's pretty easy to just put in the IP address but if it's dynamic then you need to use a dynamic DNS service (e.g. dyndns).
If you're on a Campus network, you'd have to go through / talk to their IT department and I'd be very surprised if they allowed that to happen.
Certified LabVIEW Architect, Certified TestStand Developer
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View Cluster Control/Indicator as Icon on Front Panel (sub VI's)

I make a lot of use of clusters to pass data into and out of sub vi's. I keep everything typedef'd and the clusters can often grow to be rather large on the front panel which makes navigating the front panel quite difficult. I usually have maybe 2 or 3 other controls and indicators that are not within the cluster.
Is it possible to view the cluster as an icon in a similar way to the block diagram?

Hello DNichols,
I recommend placing the cluster(s) in question partway off-screen, with the label displayed. If you really need to minimize the footprint of the cluster front panel object, set AutoSizing to "None" via the right-click menu and resize as needed, but keep in mind that the FP object is now more-or-less useless to future developers except for ease of clicking to link to the connector pane. Since you're type-defining everything, accessing or viewing the contents of the cluster might not matter much, though.
Redefining your architecture is probably not a priority right now, but you might also want to consider using classes in the future, as others have suggested.
Regards,
Tom L.

How can I view acquired images on the front panel?

Hi, I would like view captures on the front panel and video images, Is possible to do it? How can I do it?
Thank's everybody!

Hi,
Its pretty simple, go to Edit>Import picture from file (browse for your .jpeg/.bmp/.gif etc file)
again Edit>Paste
hope this helps.

Why does my Web Publishing Tool fail to create an image of my front panel when I select the "Embedded" viewing mode?

I am trying to create an html file for access by a client computer through the LabVIEW Web Server. I want to enable the client to control the vi, so am chosing "Embedded" for the Viewing Option in the Web Publishing Tool. The small preview screen in the Web Publishing Tool shows an image of my front panel, but the resulting html file does not include this image. The Web Server error log shows a 404 error which I believe is due to the lack of an image (or any front panel objects) present in the html file: Error: 404 "Not Found" for "/.lv_frontpanelprotocol.rpvi100", file "c:/program files/national instruments/labview 2010/www/.lv_frontpanelprotocol.rpvi100": Can't access URL
If you are aware of this problem or know any solutions, please post a reply.
Thanks,
David

Does it work if you preview the web page locally?
Does the client computer have at least the minimum 2010 run time engine installed?
(quote: Additionally, the Run-Time Engine allows your browser to display VIs that are embedded in Web pages.")
LabVIEW Champion . Do more with less code and in less time .

How to find VI's connected terminals when controls are hidden on the front panel?

When working with a sub-VI which has terminals connected to hidden controls is there a straight-forward way to find the terminals on the block diagram?
I click on the terminal and an outline appears on the front panel but when I try to click on that outline I can not unhide the control.
The only way I have discovered to find the terminal of the connected control is just check each terminal on the block diagram which looks like it might be connected.
I'm using LV7.1 but also use 8.5.
Thanks,
Davey

Ben wrote:
smercurio_fc wrote:
If I understood the premise of the question it sounds like you have controls/indicators wired to the VI connector pane, but for some reason these controls/indicators are hidden. If this is a VI you wrote slap yourself. If this is a VI someone else wrote, go slap them.
One way that you can find the terminals on the block diagram by performing a search by text. The context help will show you the names of the controls/indicators. The only problem with this approach is that if the control/indicator has the caption visible rather than the label, then the context help will show the caption, not the label.
Another method is to use scripting. Not sure if it's worth the effort for just one VI, though.
Before we get all slap-happy I have to ask...
If I have a sub-VI which is set for Print on completion and the controls in/out for the icon connector are NOT supposed to show up on the final report, isn't setting those objects as hidden a viable option?
Ben
Well, of course, Ben. My comment was not meant to be taken seriously... hence the smiley happy icon. To respond to your question in a more serious matter, though, there's always exceptions to rules. That's why they're rules - they're meant to be broken. Otherwise they wouldn't be rules. It's a strange state of the universe, isn't it? Although, one could probably just place the control behind another object. That sort of hides it, doesn't it?

Why can't i find the airplay key on my new ipad. i have hit the home key twice and scrolled but it's not there?

Why can't i find the airplay button on my new ipad? I've hit the home key twice and scrolled left but it's not there any clues please?

Look through this suppport document. You'll probably find a solution.
Using AirPlay, http://support.apple.com/kb/HT4437

Viewing the logged front panel data

I’m writing into the datalog file, I can see that the data is recording every one second, but when I retrieve the data i.e. viewing the logged front panel there is only one data since the range is from 0 to 0 ([0..0]). Does anyone know why? And how can I fix the problem?

You should Never rely on the abort button on the tool bar to stop a VI in a loop writing to a file. The abort stops everything immediately and you don't properly close the file. Instead of using a boolean contant in your loop to get you an endless loop, add a Stop button (a boolean switch) to your front panel. Wire that through an inverter to the Continue terminal of the loop, or (if you're using LabView 6.x) right-click on the Continue terminal and change to Stop if True, then wire the Stop button directly to the terminal. Then pass the file RefNum out of the loop to the Close File function.
For debugging purposes, I do use the Abort toolbar button, but I never create a VI with the Abort as the only means of stopping a VI. Anytime you want to st
op a VI in a loop, you may want to have some control over how it stops. There may be files to close, instruments to shut down, results to process, etc. Even if the VI is very basic or even temporary, just get in the habit of using a Stop button on your front panel rather than a boolean constant to get an endless loop. It's really not that much more work and it gives you control over your VI.

The charts are cleared when viewing a front panel remotely

Every time when a new client connects to the Web Server with the intention
to view a front panel remotely using a Browser, the charts are cleared on
server and all connected clients. Just the same happen when the user on
client computer pushes the refresh button in Browser. This behavior is new
to LabVIEW 7 and was not was noticed in LabVIEW 6.1.
How to prevent this behavior in LabVIEW 7?
Thank you

Bojane,
This is a known issue with LabVIEW 7 with charts and remote panels. Our R&D engineers are aware of the issue, and are working on the solution for the next release of LabVIEW. For now, the only workaround is to use graphs instead of charts.
Zvezdana S.
National Instruments

Front Panel View Find Home Key

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