Is it possible to view remote panels without LAN?

Useing inbuilt webserver of LabVIEW limits to view remote panel over LAN or WLAN.what are other possible ways to view it on other pc which is not in LAN?
Vikas H. Kumthekar
ASE
Tata Consultancy Services
Pune-1

Not that I tried it, but what makes you think it is limited to a LAN?
Remote FPs work on TCP, so I would expect any kind of TCP connection you can form to work (like a modem). It probably won't work over a serial connection or something similar, if that's what you're asking (unless you know how to make it work like a network card).
Try to take over the world!

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Can i use webserver other than that is provided by LabVIEW to view remote panels?

How to view remote panels using webserver (not inbuilt of labVIEW)? Is it possible to communicate with other webserver? if yes which VIs to be used?

What do you mean "use another web server"?
The remote panel publishing is an integral part of LV. I don't think it can just be detached.
You can write your own code which will grab the image of a front panel, send it to another VI and have that other VI capture the mouse clicks and send them back to the original VI which will then simulate them. You can also use something like VNC, PCAnywhere or XP's terminal services to remotely connect to the computer (or LabVNC to connect directly to a VI).
Why not use the built in web server?
Try to take over the world!

Not enough memory to complete this remote panel operation (LAN)

Hi, the problem is, when i try to view or control an application thru a simple LAN, at my work, i recibe the message "Not enough memory to complete this operation"... but both PCs are very closely... So,
are there limitations related to the amount of data involving in this kind of comminications?, my app process data acquired by a 4472 dsa PXI card, and then show results thru typical graphics...
Also, i have noted when i perform "control tasks", they have a bad effect on my app (in the server machine), in terms of performance.
The problems of excessive memory consumption can be avoided, when we used conventional PCs ? and, ¿The monitoring and the control affect my application performance?
Thanks in advance.
JFT

Hi Ankita, i will read that document now...
I work with a conventional PC and a PXI (8175). The problem is when i try to see the remote front panel thru a LAN, my application and the Remote Panel crashes, and the messages is "Not enough memory to complete this remote panel operation....". So, my question is, if it is posible to avoid this kind of problems? or remote panels are limited to a little apps... My App acquire a lot of data (thru a DSA 4472 daq) and then it process and shows that data without problems until remote panel is activated.
Sorry my english... and thanks anyway
JFT

Can 2 remote panels control the same VI without right-clicking to get control?

Is it possible for multiple remote panels to be able to actively interface with a single running VI without having to manually request and release control by right clicking? I am using Labview 8.2 Professional Version.
Thanks for any help.

No. Only one client can control a remote panel at a time, see LabVIEW Help ->
"Controlling an Application or Front Panel Remotely Using a Browser"
You might create a copy of that VI and provide 2 web pages as a workaround.
Regards, Guenter

Streaming Video in Remote Panel

Desired Functionality: Our laboratory uses LabVIEW 2011 to make science instrumentation such as digital microscopes, spectrometers, etc., available to college students to do remote laboratory assignments. We need to be able to choose a live video stream from a number of cameras and display it on a VI front panel that is being served up by the LabVIEW web server. We also need allow the users to pan/tilt or zoom the camera using the VI. The purpose of this video stream is to allow remote users of the VI to see what is going on in the laboratory in real time. The video must have low latency and be reasonably high resolution so there is no lag in viewing what is happening as the users control instruments and equipment in the laboratory.
Current Solution: We use a DataVideo SE-800 video switcher to take in the feeds from up to 4 Sony EVI-D70 cameras. The switcher can be controlled through LabVIEW in order to allow selection of one of the video feeds. The selected video is sent to a MOXA V-Port 461 streaming appliance. When the VI is loaded in a browser by a user, a piece of code placed in the html file uses JAVA to layer the video stream from the MOXA over top of the front panel. A cartoon showing this physical connectivity is attached as “Current Connectivity.pdf” The limitations of this are that JAVA introduces some additional complexity and also is a potential security risk.
Desired Solution: We would like to display the live video feed directly in the Remote Panel, without having to layer it with an external application. The use of the video switcher and video streamer are not requirements, although it is nice to pull the video from an IP address and it gives us more control over the quality and frame rate of the video stream using the MOXA. Also, the Sony camera model we are currently using is not a requirement – any pan/tilt/zoom controllable camera will do just as well, but must be high resolution, as these cameras are. So, if there was a way to connect 1 to 4 cameras directly to the LabVIEW server and select a video feed from any one of them to display in the front panel of the VI, that would be fine.
Attachments:
Current Connectivity.pdf ‏63 KB

Hi danbranan,
Have you attempted to write any code in LabVIEW for this yet? I've included a couple of links below that might help. One is a forum thread talking about how to stream video in a remote panel. The second is an overview of Remote Panels. Using Remote Panel may not be fast enough to get the quality that you want due to throughput limitations of Remote Panels.
How to streaming video in remote panel:
http://forums.ni.com/t5/LabVIEW/How-to-streaming-video-in-remote-panel/td-p/758512
Remote Panels in LabVIEW:
http://www.ni.com/white-paper/4791/en
Hope this helps!
Robert B
Applications Engineer
National Instruments

Limiting access on remote panels

Since you cannot limit the number of people able to view a remote front panel (I am under the assumption that either everyone can view the panel or no one can), I am trying to come up with a way to only allow one person to control and VIEW the remote panel. I think it might be possible to create an "access" VI that will redirect a user to the experiment VI if no one else is using it or not allow them to access the experiment VI if someone else is using it at the time. Is it possible for one remote panel to tell if another remote panel is being accessed, and if so, can a remote panel link you to another remote panel?

The way you have it set up is basically correct, but I'll make some comments before explaining the problem.
First, don't use clusters functions to process arrays. If you want to get the first element of the array, use Index Array (as it is or with a 0 wired into the index input).
Second, maybe it's just me, but I don't like the icon displays for the terminals (takes too much diagram space and doesn't really help). You can switch it with a right click for each terminal or disable it in the options menu competely. On the same note, the wire should continue straight to the Array function, and have an extension going up to the indicator, instead of taking a detour through the indicator. It just looks better and is clearer to read. You really should look at those tutorials and the style guide.
Third, your timeout case isn't necessary. A timeout case should only be used if you have code that you need to execute if no event has occured. You can simply delete the timeout and delete the case. To stop the loop, simply add an event for the stop button and wire T only out of that case. As a side point, there is no point in having a 100 ms wait if you are already waiting the 10 ms of the timeout.
Now, to the problem.
The indicator isn't being updated because the loop isn't running, and the loop isn't running because you wired the stop condition from the top loop into the bottom loop. This means (the biggest rule of dataflow programming) that the top loop will have to complete before that information will be available, which means the bottom loop will only start running after the top loop. To debug and know if your loops are running, create an indicator for the i terminal or use a probe on wires inside the area you need to check.
What you need to do is cut the loops. The easiest way is to place the stop control in the bottom loop and to use a value change event to stop the top loop. If you have more than 2 loops, it's usually easiest to create a local variable (you will need to change the mechanical action for the boolean control).
Once you did this it should work and my quick test (on the same computer) shows that the array is updated as soon as the browser goes to another page.
Try to take over the world!

Remote Panel suddenly stops downloading at about 90%

Hello,
I have a Vi running in a cRIO and I want to control it with a web browser (Internet Explorer 7). The cRIO is connected to internet with a GPRS modem (MultiModem GPRS from Multitech).
Because the GPRS connection is low bandwith, I can open remote front panels of small VIs, but the main Vi, always, stops downloading exactly at 90 seconds and that means a download of about 90%, as can be seen in the image I´ve attached. To open the remote front panels of small VIs tooks less than 90 seconds.
The timeout for WebServer Configuration, in the cRIO, is in 360 seconds. I have, also, modified, witout success, the KeepAliveTimeout = 600000 and ServerInfoTimeou = 600000, for Internet Explorer (http://support.microsoft.com/kb/813827/en-us).
So, any idea about what could be hapening?
Thanks.
Solved!
Go to Solution.
Attachments:
RemotePanelStop.JPG ‏5 KB

Hi James,
Good morning and thanks for answer.
I forgot to mention that I have made another test, that consist in connect the cRIO in our LAN, and I can open the remote panel without any problem. Obviously it took less than 90 seconds to download.
I have attached the images of the main vi. I proved to remove the grafic and all the decorations but the size remains very similar (about 229000 bytes).
I didn´t mention, also, that sometimes download only 50%, it depends in the upload rate, the cRIO have, when opening the remote panel. I also tried to open, without success, directly from Labview.
Yesterday I made another probe, I´ve developed a vi (lets call intermediate vi) that is hearing the TCP port 80, and when a connection is established, it opens a connection with the TCP port 6342 in the same PC. After that, all the string received in the port 80 are redirected to the port 6342 and all the string received in the port 6342 are redirected to the port 80. It can establish multiple connections of these type. In that PC I have a Vi (lets call test vi) and the Labview webserver enabled in the port 6342. The purpose of the intermediate vi is to add the delay you want. I´ve inserted delays biggest than 90 seconds and instead I can open the test vi remote panel with the browser. Another interesting thing is that remote panel opens two connections to the port 80.
I hope you can understand me.
Thanks.
Attachments:
Tab1.JPG ‏119 KB
Tab2.JPG ‏91 KB
Tab3.JPG ‏86 KB

Gnome Panel, without gconf

I have been using Tint, which works well, but I miss the menu that gnome-panel had. It also had a lot of little applets that I liked as well. However, i'm using just pekwm (not gnome with Pekwm as wm). which means I don't have all the gnome stuff installed atm (which is good to me). So i was wondering if it was possible to install gnome-panel without a lot of dependencies, especially gconf.

no. gnome-panel stores the configurations in gconf

Is it possible to view photos in icloud from an XP pc without the icloud control panel?

is it possible to view photos in icloud from an XP pc without the icloud control panel?

The iCloud control panel requires Windows Vista or later.
Regards.

Remote Panels not working in embedded viewing mode

Hello,
I'm trying to develop a web version of my project using Labview remote panels. I configured the web server properties as it's described here: http://www.ni.com/white-paper/4791/en/
Currently I'm trying to create the web page on the web publishing tool. However when I select the Embedded viewing mode option I get an "Requested VI is not loaded into memory on the server computer" error on the web page that is created. But if I select Snapshot or Monitor viewing mode option the page is loaded without problems.
I'm using Labview 2013 and oppening the web page in google chrome. The VI from which I'm trying to create a remote panel has some subVIs that show the front panel when called. Is there anything I'm forgetting to configure, or do I need to have any plugins instaled on my browser?
Solved!
Go to Solution.

Mateus23 wrote:
I'm now developing the web version in HTML 5, using web services to comunicate with my labview application.
There you go, good solution. When doing this remember that you have access to the database on the server. A structure I have found effective is to use the server DB like a dropbox that I write to, and the web server reads from.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Remote Panel be viewed on any Smart Phones?

I'd like to view/control my remote panels from a phone with a touch screen instead of computer. Is this possible? I'm sure the phone would need to have the runtime engine installed. Would it need to have a windows based operating system? I've tried opening them with an Iphone but was not able to download the run-time engine, as a computer would automatically download. I was wondering if I would have more success with a windows based smartphone.

It will not be possible, as you have found out, since it need to
have a runtime engine installed which is not available for LabVIEW. One
way to get around this is to use LabVIEW Web Services. It will allow you to build and deploy Web applications
over a network, making these applications available to any HTTP-capable
client. You can implement HTTP, a TCP-based protocol, on nearly any
computing platform ranging from large mainframe computers to tiny
embedded devices. Have a look at this link on how to go about setting this up:
LabVIEW Web Services
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

How can one develop "view only" client applications in Lookout?This is to develop remote monitoring without control functionality.

How can one develop "view only" client applications in Lookout?This is to develop remote monitoring without control functionality.
We have 10 Client Nodes in the field and we need two "View Only" functionality in Client machines located on Supervisory Desks.

I have done this. There are many ways to approach this but I will offer what I think is the easiest. This will work ONLY if you have been assigning security levels to your objects (objects that actually control devices in the field) greater than zero AND allowing a security level of zero to view all panels. When I develop interfaces I do this just for creating a non control client.
Basically, you remove all users from the Lookout client in the user manager. You will not be able to remove the built-ins, "Guest" and "Administrator". Now when the end users tries to login using his normal login he will be denied. Consequently, he will not be able to control. But, he will still be able to view all the information since a no login can view a panel with a viewing se
curity level of zero. You must ensure any pushbuttons that are used to open panels have a security level of zero.
Now you can copy this security profile by finding the lookout.sec file and copying it to another non-control client computer. In Windows NT this file is located in the system32 directory.
There are many other ways but I find this the easiest.
Regards,
Tommy Scharmann

Is it possible to embed a remote panel in a subpanel?

When I connect to a remote panel it opens its own totally seperate window from the calling VI. Is it possible to open a remote panel in a subpanel of the calling VI. If this is not possible then as remote web panels make use of Active X would an Active X container work?
Thanks

Hi Peter,
I've set this up with a small test and it seems to work ok. You just need to create an activeX control and select the Microsoft Web Browser, and then for the navigate property, select the URL that you want to point to - in this case, your LabVIEW remote panel. Requesting control etc still seems to work ok in this configuration.
Take a look at the attached vi's and html page - you'll need to copy this html page into your 'C:\Program Files\National Instruments\LabVIEW 8.2\www' directory to get this to work, and make sure you have the web server configured correctly. The browser vi is the one to run - with the test vi being the one in the remote panel.
Hope this helps
Regards
Hannah
NIUK & Ireland
Attachments:
test.zip ‏14 KB

Is it Possible to assign Valuation class without accounting view in MM

Hi all,
I have check my client system for materials having without accounting view while checking in table mbew for this material having valuation class.can anyelse say is it possible to assign valuation class without having accounting view.
Advance thanks,
raraja

Hello ,
It is not possible to have a valuation class without accounting view.
There is some mistake that you are possibly making . pls check the same .Pls check if u r viewing the material master at the correct plant level .Also if you say that in MBEW valuation class exists , find out l the corresponding valuation level, the see the material master at the same level . You will definitely find the accounting view.
Regards
Anis

Remote Panel: how to load a vi into memory without showing it on the screen

Hi,
I'm using the remote panel facility of LabView 6.1 to allow any user
to control my instruments from within a web browser. However, in order
for this to work, labview has to be running and the vi opened on the
server, which i want to avoid.
Is there a possibilily to enable the labview web server and load a vi
into memory in the background, whithout showing it on the screen?
thanks

> Is there a possibilily to enable the labview web server and load a vi
> into memory in the background, whithout showing it on the screen?
>
Not at the moment. The VI truly is running on the server and simply
displaying on the remote machine(s). At the moment it also needs to
have a display on the server. You probably could write a small VI to
periodically look for open LV windows that have connections to them and
minimize them. Then run that VI on the server.
Greg McKaskle

Is it possible to view remote panels without LAN?

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