Large(ish) Remote Panel Applications?

I'm just wondering if anyone has had any luck developing Medium to Large scale remote panel applications and would be willing to share their experiences.
I ask because I'm in the process of developing an application that I intend to be deployed remotely, and have already run in to two major bugs (that got sent to NI R&D) requiring workarounds, and one plugin (the LAVA GUI plugin) that just causes LabVIEW on the client computer to hard crash... and I'm 30% done with the application. At this point in time, I am seriously considering bailing on the remote panels and trying to come up with an alternate way to deploy the app.
Thoughts?

You could access the remote application via VI Server. This is a little higher level access than TCP/IP and wouldn't constrain your interface to what you happen to have running on the remote computer.
This may be just me, but I don't think I would want to be running to a remote location because the GUI for my local system needed to change.
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

Similar Messages

Running LV application from remote panel which measures FP through different LAN

My LabVIEW application is running in a PC and it takes measurements from the FieldPoint modules which are connected via the FP-1601 network module.
I want to view and execute the application from another PC using remote panel option. The master PC has two LAN connections, one seperate connection for the FieldPoint module and the second one to connect with other PCs.
But the application returns error while initializing the FP modules when executed from remote panel.
Will the application be able to communicate and take measurements from the FieldPoint module in this case? Please explain.
Thanks for the help and awaiting earlier response.
Thank you,
Rajeswari

In principle this I believe this is a TCP/IP routing issue.
If your fieldpoint unit is connected to one card lets say
Card 01 Host 10.0.0.1 255.255.255.0 ---- Fieldpoint 10.0.0.2 255.255.255.0
Card 02 Host 168.95.0.1 255.255.0.0 ---- Lan 168.95.x.x 255.255.0.0
The routing in the host takes care of which card is used for which network segment.
My guess is that you have not seperated the network segments as shown above.
Is this correct ?

Remote Panel launching applications

When you have a remote panel connection and do something like "Export Data to Excel" on a table - which computer launches the application - server or client?
I suppose I could test it out, but I don't have a second computer handy right now.
Edit: A secondary question is: which computer is actually running the VI, and using its resoruces (processor / ram)? Also, if the server computer has access to network shares that the client computer doesn't, can the client access those files through remote panel? ... etc.
Edit2: Found that in the documentation. It is being run on the server, which likely means it can access the server's network shares as well.

Hello,
The Client opens the front panel on the Server. When you open a front panel remotely from a client, the Web Server sends the front panel to the client, but the block diagram and all the subVIs remain on the server computer, thus the Server would launch the application. If you grant access to the Server, you would have to institute specific security measures (such as passwords) to prevent the client from accessing the excel sheet.
Here are two helpful articles that detail the server/client relationship more thoroughly.
http://www.ni.com/white-paper/4431/en/
http://www.ni.com/white-paper/4433/en/
Warm Regards,
Josh

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

Remote panel - issues and questions

So, what the title says. I'm having issues with Remote Panels.
First, the default example in LV 2014 does not appear to be working. The client always returns "vi not loaded in server computer" type error. Yet, I found an example from LabVIEW 7 (attached) that appears to be working fine. The differences are very minor. Any suggestions?
Second, if anyone has links to good reading / documentation / examples, etc on remote panels any and all would be much appreciated. End goal is to have medium-large sized application that will be run remotely in a LabVIEW environment (not web).
Thanks!
Attachments:
RemotePanelMethods-Server.vi ‏31 KB

Not that I can think of, unless... Perhaps you could get a reference to the dialog box that is running on the server and force it to close in some way. A better solution as a whole might be to not using blocking dialog boxes. Can a VI tell if it's being remoted into?
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 not working in Windows 7 Starter

Hi all,
We have an application that can be controlled via remote panel. This is working fine in Windows XP PC. But when I try to access the same by opening Internet Explorer in a PC running Windows 7 Starter OS, I only get the 'Downloading 0.00% of 0 bytes'. I have disabled the Windows Firewall and there is no antivirus software also. What could be the reason for this? How could I solve this?
Thanks in advance,
Priyadarsini
Solved!
Go to Solution.

The system which had the problem was a netbook that came with Windows 7 Starter. We found out recently that there was some parental controls utility in the netbook that prevented the LabVIEW Remote Panel access. We were not aware of its presence & it had not shown any indication that it had blocked Remote Panel communication. We uninstalled this utility & the Remote Panel started working as intended. Thanks again for your help.

Can multiple PCs access one remote panel at the same time?

I've written a program in labview 7.1 to monitor/control a labview application running in the test cell through Remote Panel. I and my coworker can remotely monitor and/or control this labview application individually. But if my coworker has the remote panel displayed on his PC and I try to get the remote panel on my PC, I get a labview error (63) as below:
"LabVIEW: Serial port receive buffer overflow.
LabVIEW: The network connection was refused by the server."
My question is: Can multiple PCs access one remote panel at the same time?
Thanks in advance!
Y

Sorry I wasn't clear. The remote panel license is separate from the number of LabVIEW development licenses. Pricing information on remote panel licenses can be found here.

How can I disable messages generated by Remote Panel?

I created an application (EXE) to server its panel to other network clients.
I used the Tools > Web Publishing Tool to generate a HTML code to create two different web pages to access this application using Web server:
- Embedded (for some users who need visualize the panel in real time).
- Monitor (to display panel snapshots to users updated every 1 second).
I don't need anyone controlling the remote panel, so I used this option:
Tools > Options > Web Server: Browser Access and checked Allow Viewing (not controlling) for every client connected.
Ok, both are working fine. But it a user try to Request control of VI on the Embedded page (right click in the remote panel), the application running in the server displays a message: Denied control request from XXX: Check permissions.
The embedded page stills working fine, but in the Monitor page that message appears in a box (see attached picture below)..
Is there a way to disable all messages in the remote panel? I realized that I need to access the computer where the application EXE is running to close the message.
I'm thinking in two solutions:
- Unable the right click menu in the embedded page to avoid clients request control of the remote panel.
- Run a code in the application to erase messages generated.
Has anyone an idea how to solve this?
Thanks in advance,
Klein
Message Edited by Klein on 08-06-2008 12:54 PM
Attachments:
Remote Panel message.jpg ‏10 KB

Hi Dpcamargo,
I'm already using monitor with a delay of 1 second and this doesn't seems real time like remote panel visualization.
But you sent me a good tip: use java code to cancel right clicks at all....
I will try this solution.
Hey, we are both brazilians! So, thank you so much, Dpcamargo.

Blink while alarm on using shared variables with remote panel

I am creating an application where I have front panel indicators data bound to shared variables. I also set it up to have them blink when the alarm is on. I am using the DSC module.
This works great under the development environment. But when I connect using the remote panel, I can no longer see the blinking indicator if there is an alarm. I can see the blinking indicator on the machine that is running the program, but no on any of the remote panels (I have no problems connecting to the remote panel and controlling the program).
I have the remote panel set as embedded, since I want the user to be able to change some settings over the network.
I am sure I am missing something simple, any ideas??
thanks
Kenny

I have been using IE6 and Firefox, and I have found that the blinking does show up, if you refresh the page. And then if the alarm stops and the blinking stops, you will not notice it until you refresh again.
Kenny

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

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 and DSC interfering?

Hi, I wonder if DSC or OPC is interfering to view my remote panel in a executable, since I installed them and now I cannot see my web page. I mean the instructions says close Labview to gain acces with the executable, does DSC or the shared variabel Server or something is interfering?
What happened:
I have a program which monitors temperature for rooms with fruit, We acquire the temps through modbus RTU, and We see that info through internet.
First I did it with the modbus libraries, and It worked, We had the web page working through remote panels and the web publishing tool.
But now I saw the DSC toolkit for Labview, and excited about that I migrated the whole functionality to the IO servers, and until the very end, when everything else works ok, the web page or remote server doesn't works, works with the VI but not with the EXE.
The first time I followed this, and I did this time again with not succes
http://digital.ni.com/public.nsf/allkb/7F95D43D3F50FCAC8625710E000068E1
Currently state:
My Web server is started and works in development, I made a webpage named TRY.html, and it works in Labview with the VI.
I know that the plugin doesn't works on chrome, but just to let you see that the problem is not IEXPLORER, whetn the web page is static it works on chrome too.
With IEXPLORER (right) it works in chrome (left) it doesn't
Working on IExplorer
So I followed the steps from the instructions, added the web page to my project, added to the build, and built
Then I modified my NIconfigserver file, and CLOSED labview entirely, the tutorial says so, I closed at least as much as I used to do before.
My ni config
# Web server configuration file.
# Generated by LabVIEW 14.0
# 13/06/2015 11:44:16 p. m.
# Global Directives
NI.AddLVRouteVars
ErrorLog "$LVSERVER_ROOT/logs/error.log", level=2, anew
TypesConfig "$LVSERVER_ROOT/mime.types"
LimitWorkers 10
LoadModulePath "$LVSERVER_ROOT/..;$LVSERVER_ROOT/modules;$LVSERVER_ROOT/LVModules"
LoadModule LVAuth lvauthmodule
LoadModule LVSnapshot lvsnapshotmodule
LoadModule LVRFP lvrfpmodule
Listen 8000
# Directives that apply to the default server
NI.ServerName LabVIEW
DocumentRoot "C:/SMC/data"
InactivityTimeout 60
SetConnector netConnector
AddHandler LVAuth
AddHandler LVSnapshot snap
AddHandler LVRFP
AddHandler LVSnapshot
AddHandler fileHandler ""
AddOutputFilter chunkFilter
DirectoryIndex index.html
My ini
[SMC]
server.app.propertiesEnabled=True
server.ole.enabled=True
server.tcp.paranoid=True
server.tcp.serviceName="My Computer/VI Server"
server.vi.callsEnabled=True
server.vi.propertiesEnabled=True
WebServer.Enabled=True
WebServer.TcpAccess="c+*"
WebServer.ViAccess="+*"
DebugServerEnabled=False
DebugServerWaitOnLaunch=False
saveFloaterLocations=True
find.viListFlags=0
LastErrorListSize=0,0,0,0
paletteStyle="NamedIcons"
And so, I open my EXE, then reload the webpages, and I can see that the web server is started, because it shows the html, but I cannot link to my EXE. It says that can't find my VI
Requested VI is not loaded into memory on the server computer
If I close the EXE the server stops
Remote Panel connection refused by specific server, Make sure Labview Web server is enabled
And that's my history
It's always hard for me to get the web page working, but this time I've spent hours without success
I did the test in my development pc and in the target PC and is the same, on these PC's the webpage was working before using DSC.
So any help will be appreciated
My best regards

The DSC Runtime Engine will be sufficient for the deploying the project to a new computer. The Run Time Engine is equivalent to the DSC Module, but you can't do any programming with it. You will need to purchase a separate license for the Runtime license for each deployment computer also.
What is the DSC Run-Time System and When Should I Use It?
http://digital.ni.com/public.nsf/allkb/E56DB8726DB68F288625770E00594351
Thanks,
Frank
Application Engineer
National Instruments

Remote Panel and DataSocket

In LabVIEW6.1,there is "Remote Panel"feature.And in http://digital.ni.com/demo.nsf/websearch/3DF73584759FF60986256ABD005BB446?OpenDocument&node=1381_US, there is a demonstration named "Weather Station".In LAN,I can control the VI from another host.But how can I control a VI from a host of different LAN or by Internet.For example ,can I bulid a remote panel which you can control from your own computer?
Thanks.

LabVIEW ships with a web server that is used to host your own applications. In LabVIEW 6.1 you find the tools to help you embed your own VI in a web page. These tools are found under Tools >> Web Publishing Tool and Tools >> Options >> Web Server. Most corporate networks have a firewall that you will have to deal with. In order for everybody inside or outside the firewall to access your remote panel, you will have to open a port through the firewall. Also, anyone that wants to view a remote panel will have to have either the LabVIEW Run-Time engine or full developments system installed.

Remote panel and selective control access through Security with DSC

Hi Everyone,
I looked around to see what labview had to offer concerning security of remote panel and all the solutions I've found only propose full access to a remote panel, or none. The login page is not an option for me as everyone on the intranet can access the remote panel for monitoring but not everyone can have control to the buttons on it.
With the DSC module, I can give securities to the different controls and it works great with the exe, if I log in or out, the controls appears or disapears. Unfortunately, with remote panels, those controls are always visibles. Furthermore, when I log in from a remote panel, all the other remote panels get logged in with the same username and priviledges. When I log out, same thing, it logs out all the other remote panels. So the last guy who logs in gives its priviledges to every one else who is monitoring the remote panel at that time. when he logs out, he logs everyone out. I used a reentrant vi hoping that this would solve the problem but it didnt.
I would like to do what my colleague does with Advantech without any problem. He has only 1 .exe is running on the server and whoever connects to it through webserver, just needs to log in and he has all the priviledges of an guest, operator, admin, etc.. with access to controls and features accordingly. All this without interfering with the other people using the remote panels. This colleague has always been doubtful about the capabilities of labview to do SCADA systems and uptil now, I've been able to prove him wrong.. please help me continue
There are workarounds, using remote desktop to the server instead of webserver but it definitely is not as practical for the client and it will need quite some work to to synchronise all the exes open from the differents sessions, through the use of shared variables, binding and securities.
Thank you for your help.
Solved!
Go to Solution.

Thank you very much for your reply Jordan.
The NI security info is on the server (local domain with groups and users), and the running exes as well. The remote panel is not supposed to be accessed by internet, at least not yet, but just by the computers on the network and thinkline computers who are directly connected to the servers. the remote panel is accessed through the simple url: http://serverip/Application.html
There is no problem with accessing the remote panel of the exes on the server from another computer on the network. But there are several security issues when logging in and out with the NI Security Programmatic Login and logout VIs through the remote panel..
The 1st problem occurs when several people access the remote panel at the same time. In my setup, everyone is allowed to check what's happening on the front panel of the running exe, go through the tabs, check the graphs, the tables, etc.. , but only the administrators and the operators can send commands to the machines and the production line through this remote panel. Hence some buttons are accessible to all users, while others are only accessible depending on the privileges of the person logged in.
So like I said in the 1st post, I configured some buttons to be accessible only by the users of the admin group. When the exe runs, it's perfect, if I log in and out with an admin account, the buttons appears and disappear accordingly. But when I check the remote panel, those admin buttons are always visible, even if I am logged in as a guest or even logged out. Is it because the remote panel only needs minimum runtime engine and doesnt use the dsc runtime engine? if so, any work around?
Furthermore, another big problem is that if I login as an admin in one remote panel, then login as an guest in another remote panel, and then logout back from the first remote panel, it says: "User Domain/Guest logged out". Hence, my second login logged out my first user. I can actually see the admin buttons appearing and disappearing on the exe when login as admin and guest from the different remote panels.
So that's it, I would like my remote panel to behave like a normal scada system, with one exe running in the back (on the server) and with all the users accessing it through web server. Several users might/will access the remote panel at the same time and each of the users have a login/password that grant some of them the privileges to take some actions while giving the others only monitoring rights.
I hope that I have been more clear in this 2nd post,
Thank you again for your time.
Best Regards,
Tom.

How to Detect LV runtime engine prior to showing Remote panel in browser?

I work on a web server that delivers remote panels embedded in browser windows. On new machines, the labview runtime engine needs to be downloaded and installed.
Currently, when a new user 'hits' the remote panel, the user is prompted and then downloads the component. However, the user experiences some errors that can be confusing. The first time, the remote panel is not embedded properly and the user must go 'BACK' then reload the page.
We would like to check and detect whether the LVRT engine is installed prior to posting a webpage that contains a remote panel.
What is the best way to detect whether the LVRT engine is installed on a remote computer?
Jim West

Jim West wrote:
My brain is swimming... I haven't had enough coffee this morning... There is a chicken and egg issue. As soon as I post the page, the client knows it needs to install the Labview runtime engine. However, my Labview process has already attempted to place the remote panel in the page. I get an error. I'll admit that I haven't delved into my software since there are two spawned processes involved. One process responds to the request and another lingers in memory running the remote panel until the user finishes.
From my perspective my lingering process should be sufficient to get the remote panel displayed when the RTE in finished installing but here is the catch. Installing the RTE requires a reboot, therefore the server process would need to linger in memory a long time and then would need to recoginize that a user from the same computer and login is looking for the page. Not really the way to go. I can't have a process on the server lingering waiting for a user to reboot his computer and then do something when they start running again. That process needs to die right away if the RTE is not available.
Jim
Would it be possible for this lingering process to check to see if the web server read has timed out? The default is 60 seconds, and you can change it by going to Tools>>Options>>Web Server: Configuration.
Trey B
Applications Engineering
National Instruments

Large(ish) Remote Panel Applications?

Similar Messages

Maybe you are looking for