Transfer Image to remote panel

Hello all
I want to transfer Image to Remote Panel.
Must I instull full version of IMAQ Vision to PC with Remote Panel or not?
With respect
Iskander

Hello Iskander,
NI-IMAQ is the driver that allows National Instruments' frame grabber cards to communicate with your computer. This driver allows you to acquire, save, and display images; whereas Vision allows you to process these images. The Vision Development Module includes a license for Vision Acquisition Software.
You can also download Vision Acquisition Software, which includes NI-IMAQ, NI-IMAQ for 1394, and NI-IMAQdx, here:
Regards,
Jasper S

Similar Messages

Remote panel image

Hello all.
I have LabVIEW 7.1.1, run-time engine7.1.1 and IMAQ Vision 7.1.
May I see Image on remote panel?
Respect
Aleksandr.

Thanks You for the answer.
But I have else question.
May I do the separate server remote panel that install it to another computer.
Another computer will be without LV.
Regards
Aleksandr
Message Edited by [email protected] on 05-31-2006 06:57 AM

Labview Remote Panel and Client Aspect Ratio

Dear all professionals,
I had create an application with remote panel (webserver) enabled. I found that there is relationship between aspect ratio of client device display and the remote panel screen size. Here i attached two images of remote panel in browser which both remote panel are opened using different aspect ratio of client device.
The left 1 is the device with 1.5 aspect ratio while the right 1 is the device with 1.78 aspect ratio.
As you can seen from the images, both remote panel are shown in different size. May i ask do i miss something in the remote panel configuration?

Hi Michel,
Thank you for your reply. I also notice that the zoom % of browser is one of the issue that caused this behaviour. In the same aspect ratio with server computer( where the application running), changing zoom to 100% will help to fit remote panel that I already set when I developing the remote panel vi. But if for different aspect ratio, no matter how u change the zoom % , it won't fit the frame. I just wondering whether got another solution for this issue or not :-(

Remote Panel & client-server model

Hii..
I am working on image processing. I have developed a VI and web published it, It was working well. But, I was unable to give my own input image from remote panel. I can give various inputs which are kept in library only. But, I could not upload my own input image.
For that purpose, i created Client- Server model. This is not web publishing. Client VI will have same front panel as Server VI. Using this model, i can give my own input image. Whatever input and controls in Client VI will be sent to server VI using shared variable. I tested it on LAN connection, it was working well.
But, when I run through internet, it became very slow...... There may be two reasons 1. Bandwidth for our public IP is less and 2. slow internet connection..
Are there any other ways to speed up the Client-Server model.............
As compared to remote panel, Client-Server model on internet is very slow.......
Give me ur suggestions, ideas to speed up this model..
thanks
Prashh

Hola
Si puedes monitorear/controlar un ejecutable en remoto.
Te adjunto algunos enlaces del foro de NI sobre la materia.
You need start the web server to have access at your executable, see below links with information about this :
http://digital.ni.com/public.nsf/websearch/862567530005F09C862567710044C3E2?OpenDocument
http://digital.ni.com/public.nsf/websearch/862567530005F09C8025673000529121?OpenDocument
http://digital.ni.com/public.nsf/websearch/3B2160B128EE09A886256B60006FFA66?OpenDocument
http://digital.ni.com/public.nsf/websearch/A2A5ACDEEFA448E686256D9800629227?OpenDocument
Saludos
Alipio
"Qod natura non dat, Salmantica non praestat"

Remote Panel bandwidth

I am attempting to use the remote panel to connect over the Internet - the server VI is fairly intensive in terms of the controls/indicators etc., so that there is a bit of a draw on the available network bandwidth when I access it.
Is there a way to set the refresh or update rate for the the remote panel (either the client or the server), so that I query the remote panel at a slower rate (or update on demand)?
Or, would using data sockets on selected controls/indicators be a more efficient way of minimizing the bandwidth (this means I have to create a duplicate app on the client PC that subscribes to the selected controls, I imagine).
Thanks.

Another solution is to not try to transfer the screen image back and forth but just the data that's significant. I have done this in the past and it works well. A major advantage to this approach is that you get to control what data gets passed and how often it's transfered. For example, you could only send data that changes.
To implement this approach you will need to define a communications protocol. It could be built on the LV TCP/IP routines, Telnet, datasockets, remote VI server calls or any of several methods. It all depends on what features you need--and how much time you want to take.
If you have specific questions about this sort of technique I would be glad to answer them.
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

Where can I download "Vision Remote Panel Engine"

Hi,
I'd like to be able to view a Real-Time application on a remote computer (without LabVIEW installed). I've installed LabVIEW RunTime 8.5.1 and the image that I display (on the web server) in the VI is always black. I found this post: http://forums.ni.com/ni/board/message?board.id=170&message.id=115188&query.id=35023#M115188 which has the same problem as mine and in a reply they send me to a Knowledge page: http://digital.ni.com/public.nsf/websearch/9286727047B6736086256D5D00781BB2?OpenDocument
In this page, it says that I need to download Vision Remote Panel Engine (which is free) to be able to display the image that I acquire with my smart camera 1722. Where can I download this? I don't want to download Vision Runtime because it's not free..
Thank you for your help
Stephanie

Hi Mike,
So you mean that I only need to install LabView runtime and I'm supposed to see the image that I acquire in the Image Display?
My problem is that I see the indicator, but the image is always black. I guess I miss something. In the second link I gave, in the related link, it refers to Vision Acquisition Software download. I'm installing it right now. Hope it's gonna solve my problem.
I never get a prompt message when I was in the web browser and I'm not even connected on the internet (I'm only connected to the smart camera and I have a fixed IP address).
Let's see if I see something with Vision Acquisition Software...
Thank you
Stephanie

Working Principle of Remote Panel

Hello,
I am using LabVIEW Remote Panel and want to know more about it. Does anyone know what is the working principle of it? How can it embeds a VI interface into a Web page? What technique and protocol are used in it?
Thanks

Hi Alan,
You have three options when creating a Web page with the "Web Publishing Tool"; Snapshot, Monitor and Embedded. Snapshot and Monitor are simply including an image of the front panel in the HTML document, whereas Embedded actually embeds a VI front panel (not block diagram/code) with all its functionality in the HTML document to remote control the actual VI on the server. The technology used for the remote control communication is provided by the LabVIEW Runtime Engine. That is why the Runtime Engine has to be installed on the client machines to be able to see the Remote Panel.
When accessing the HTML document the first time, the front panel will be downloaded. After that point, only data that goes to and from the controls and indicators will be transferred. Since the image of the front panel is not repeatedly being transferred, you will get a much better result. One thing you have to take into account though, is that ALL data to and from the controls and indicators is being transferred through the TCP/IP connection, so if you are transferring a lot of data (for example one million points every second on a graph), your network connection can get flooded. Therefore, don't update the indicators with an amount of data that exceeds what can be shown on the indicator.
Does this make sense?
- Philip Courtois, Thinkbot Solutions

Remote panels - Client Crashes Situation

Hello,
I would like to ask if someone can help me with the following situation.
I have an application which contains a top level VI and several other dialog VIs. This application can be accessed by a remote client via Remote Panels. From the top level VI (contains the menu - while loop and event structure) the client selects what he want to run. Then the front panel of his choice opens on his computer. It all runs ok.
However, if the client computer suddenly loses internet connectivity, then the Run Time Engine reports a plugin crash in the browser.
On the server side, all opened apps seem to freeze. I can turn them off one by one and then restart everything again.
Could anyone let me know how to approach this issue? I would like the client, in case a crash happens, to be able to reconnect to the application.
Thank you and have a nice day.
Solved!
Go to Solution.

Hello and thank you for the reply,
On the server side I am using Labview2011 with SP1, under WinXP.
On the client computer, Run Time Engine 2011, Chrome under WinXP.
The server is situated in a laboratory and it should work on its own, 24/7, without my intervention for taking control of the app.
So now, I have considered the scenario when a client connects to the application, starts running it and after a while he will use the Windows Task Manager to end the application, without considering the normal options which are available in the menu. In this case, in the browser I would get Image1. Basically the client will have to connect again to the server. On the server side, I have inserted a state where I check to see if there are any remote clients connected to my application. If no client are connected, then it closes. So as the client kills the task, imediatelly my server stops the application. So this is solved and works fine.
The second scenario is when a client does not close the application even when his time allocation has reached 0 minutes. Again, the server checks this time limit and it closes the client connection. For this, I have used in a case, the code presented as Image2. If this situation occurs, the client is disconnected and he
gets the Image 3 message on the browser. This error appears twice and each time the client presses Continue. In the end the server takes control and it is all ok.
However, what might cause this error? Is there a chance to fix it? I couldn't find any reference to it and the Remote Panels.
Thank you and have a nice day.
Attachments:
IMAGE1.jpg ‏38 KB
IMAGE2.jpg ‏75 KB
IMAGE3.jpg ‏62 KB

Using datasocket or remote panel?

Hi,Friends,
I am developing a fault inspection system in a production line. The manager and other leaders want to watch the inspection process remotely (at their office)when my system is running in test room. I have tried remote panel so that they can monitor the process with IE Browser, but the refresh and data transfering in remote site are very slow. I noticed someone could use DataSocket the implement this function. But I have no idea about the difference of DataSocket and remote panel. Are there anyone who has this kind of experience tell me some skills to improve the performance of remote monitoring?
Other questions are:
1. In order to carry out remote display, which one is better, DataSocket or remote panel?
2. What the
purpose of remote panel and DataSocket in LabView? What are the difference and connection between them?
Any suggestions are warmly appreciated.
Red

The benefit of remote front panels is that a user can view the front panel of your application with only a runtime engine. When using datasockets you will need the full development environment whether it is LV or another programming language like VB. Datasockets are a mechanism to transfer data across a network but still the underlying protocol is TCP/IP. Data sockets will require you to use the datasocket server and will require code to utilize them. In other words you will still have to write a vi to display your data. Where as in remote front panels you can utilize the front panel on the source machine. Because of the TCP/IP protocol it is more of a network speed issue in your case. You still are restricted to the capabilites of your network. Once sug
gestion is to isolate your network from your corporate network if that is the case. This will reduce traffic on your network and allow your data to be transferred at the highest speed possible. Hope this helps.
BJD1613
Lead Test Tools Development Engineer
Philips Respironics
Certified LV Architect / Instructor

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!

Set resolution the web camera from Remote Panel.

Hello all
I want to control the WEB-camera from Remote Panel
I created the VI and I must to set the resolution of the WEB-camera (640*480 or 320*240).
But I couldn’t to set resolution from Remote Panel.
What do I do?
Best regards
Iskander
Attachments:
USB_camera.png ‏15 KB

Dear John H.
Thanks for the answer
I created the VI to observe the image from WEB-camera
When I run the VI, I must to set the resolution the WEB-camera.
When I run the VI on the host computer , I can do this.
But when I run the VI on Remote Panel, I can’t adjust the resolution of the WEB-camera from Remote Panel and the VI are stopped
What can I do?
With respect
Iskander
Attachments:
image.png ‏237 KB

Secure Remote Panels?

Question...Is there any way to secure Remote Panels?
I've got a client with an application I wrote that he makes available to 'his' customes via Remote Panels. He's concerned that some unauthorized person can 'tap into' the RP feed and be able to view (and possibly control) his VI.
While this app was written using LV 8.5.1, I know that LV 2009 (and I guess 2010) have some kind of encryption built in. Is there any way to use this to encrypt the Remote Panel image/data?
Also, does anyone know how 'strong' the NI encryption is? Apparently 64 bit is the strongest that can be legally exported

Security is a relative thing.
Back in the day when I consulted with banks on security systems I learned that the amount of money that went into protecting vault depended on how much money was in the vault. THe idea was to make it more expensive to break in.
Same idea applies to computer security.
The LV Web interface effectively sepeartes the front panel from the block diagram and provides the linkages between them.
To attack that communication the atttacker must be familiar with that interaction AND be willing to do the attacking.
Aside from one of my mentors, I know of nobody outside NI that can attack that interface and judging by his posts, he is too busy to get involved.
So if the data in the app being served is really worth so much that the cometition would invest in doing the hacking, then the concern is valid. But if the served app's info is not that valuable, then relax and let the competition waste their money.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Remote panels with proxy

I would like to know if somebody has been able to download the remote panel of a VI through a firewall in the following situation: imaging a internal network of a company that has a proxy server with all traffic on port 80 allowed. Trying to connect to http://weather.ni.com/weather.htm has been imposible even with all trafic through port 80 allowed in the proxy server. According to the following link ( http://digital.ni.com/public.nsf/websearch/379E5C57148D877586256D6000632A3F?OpenDocument), that would be enough. So my question is: has anybody been able to connect to? In affirmative case, could you tell me the type of the hardware firewall?

Hi Faust,
Please have a look at this KB . Have alos a look at the link under this KB. With browser acces you can grant acces to your webserver; by default ecery one is allowded to connect to your webservice; you can specify in the browser acces list a IP address or a domain.
Best regards,
Martijn S
Applications Engineer
NI Netherlands

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

Disable Monitoring of Remote Panels

This is going to seem like quite a bizarre question, but I'm trying to learn some rather advanced (Well I think they're advanced anyway LOL) uses of labview so that I can help make some programs to be used with an educational class. I've learned how to make a remote panel and how to access it from other computers, but there's one slight problem. See, the .vis I'm making are parts of assignments that the students will need to complete. So, odd as it may seem, I'm trying to find a way to make a remote panel ((aka an embedded vi on a webpage)) be controllable remotely, but at the same time I don't want other students to be able to essentially look over someone's shoulder and just watch as the other person completes the assignment. I searc
hed all of the menus I could find, but was unable to find an option dealing with this. Did I miss something or is there a programmable solution to this problem?

> I want only one person at a time to be able to control it, and its
> fine for people to see the panel's image, but I'd prefer for them to
> not be able to see what the other students are doing with the panel.
> Currently only one person can control the panel remotely, but everyone
> that's waiting in line can see exactly what they're doing.
There is a utility for monitoring connections, and you can deny or close
down connections for any reason, typically it will be for timeouts. But
you could monitor and deny their access until the current user is
finished. Or, it might be alot better to do this in the HTML pages
leading up to the remote panel. They request control, and if someone
else has it, they get a denied page where you sh
ow them whatever you
like, such as instructions for preparing the experiment. Then when the
current user releases control, it can be given to the next in line. To
do this, you could use CGI in LV, Perl, etc.
Greg McKaskle

Transfer Image to remote panel

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