Starting applications remotely using LabView activeX server

I want to
make a program that enables me to start applications on a remote computer. I
made a program that starts applications using either System exec.vi or .NET and
both methods work find on my local computer. I built it with activeX server
enabled and copied it to my remote computer. After struggling with DCOM
settings and Security settings for a couple of days!! I’m now able to start the
program from my local computer. The thing is that I can’t see either the
LabView program or the started application. When opening the Windows Task
Manager, I can see both the programs under the Process tab so they have
started, but obviously as a “background” process and not as an application.
Does anyone
have an idea on how to start the programs as applications?

Why not just use PsExec?
http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx

Similar Messages

Calling LabView ActiveX Server from TCL?

Does anyone have experience calling a LabView ActiveX server vi from
TCL? I created a simple VI with one control (labeled "A") and one
indicator (labeled "B") and a +1 adder between them. I can load and
open the VI from TCL:
package require tcom
set lv [::tcom::ref createobject "LabView.Application"]
set viPath "D:\\National Instruments\\LabView\\Activity\\a.vi"
set vi [$lv GetVIReference $viPath]
$vi FPWinOpen True
But when I try to send in data:
$vi -namedarg Call A 1
I get the error message "unknown parameter A".
I have also attempted to duplicate the "ActiveX Server" example
from the LabView help file, calling "Frequency Response.vi". This
approach encounters the same error message:
% package require t
com
3.0
% set lv [::tcom::ref createobject "LabView.Application"]
::tcom::handle0x013202F4
% set viPath "D:\\National
Instruments\\LabView\\examples\\apps\\freqresp.llb\\frequency
Response.vi"
D:\National Instruments\LabView\examples\apps\freqresp.llb\frequency
Response.vi
% set vi [$lv GetVIReference $viPath]
::tcom::handle0x01335AE8
% $vi FPWinOpen True
% $vi -namedarg Call Amplitude 10
unknown parameter Amplitude
If anyone can point me in the right direction, or give me an
example of how to do this I would greatly appreciate it.
TIA.
Leslie

In article ,
Leslie Brooks wrote:
>"Bruce Hartweg" wrote in message
>news:...
>> "Chin Huang" wrote in message
>news:[email protected]...
>> >
>> > I don't use LabView, but from the Visual Basic example I saw, it seems
>> > the Call method takes two arguments. The first is an array of parameter
>> > names and the second is an array of parameter values. Try to send in
>> > data with the Tcl command
>> >
>> > $vi Call [list A] [list 1]
>>
>> I'm unable to help the original question (don't know LAbView or VB stuff) but
>> just want to point out that [list A] is equal to A and [list 1] is the
>same as 1.
>>
>> Bruce
>
> I know what is supposed to be passed to the 'Call' method. Doing
>this:
>
>set inst [::tcom::info interface $vi]
>$inst methods
>
> produces (among other things):
>
>{1015 VOID Call {{{in out} {VARIANT *} paramNames} {{in out} {VARIANT
>*} paramVals}}}
>
> So the 'Call' method is expecting two parameters, both pointers
>to variants. TCOM appears to be passing the correct parameter type
>because the TCOM documentation says that a TCL List maps to a
>one-dimensional array of VT_VARIANT. However, the results are
>INvariant (bad pun intended):
>
>% $vi -namedarg Call Amplitude 10
>unknown parameter Amplitude
>% $vi -namedarg Call [list Amplitude] [list 10]
>unknown parameter Amplitude
>% $vi -namedarg Call [list Amplitude] [list [::tcom::na]]
>unknown parameter Amplitude
>% set i 5
>5
>% $vi -namedarg Call [list Amplitude] {incr i}
>unknown parameter Amplitude
>% $vi -namedarg Call [list Amplitude] [list [incr i]]
>unknown parameter Amplitude
>% $vi -namedarg Call Amplitude [incr i]
>unknown parameter Amplitude
>
> Who can help me with this? Who is the LabView Guru?
Try invoking the Call method without the -namedarg option. The
-namedarg option doesn't work the way you seem to think it works. The
-namedarg option provides a way to specify arguments named from the
method's parameter specification. For example, you discovered that the
Call method take two parameters named "paramNames" and "paramVals".
Tcom returns the error "unknown parameter Amplitude" because "Amplitude"
doesn't match either parameter name.

Is it possible to querry all of the Virtual Instruments in a VI using the ActiveX Server Virtual Instrument Class?

Is it possible to querry all of the Virtual Instruments that exist in the Front panel of a VI using the ActiveX Server Virtual Instrument Class? I can't seem to find a method or property that returns all the Instruments I may want to control from another application.
I wish not to have to reference to the VI to figure the ControlName by looking at the VI FrontPanel.
But rather have a prop that exposes the strings of all the Instruments.
Example:
allinstr=ObjectVIInstrument.VIControlNames
Object.SetControlValue(AllInstr(1),value)
Thanks.
-Abe

Abe,
There is a VI method called "Get All Control Values" that returns an array of {name,typedesc,flatstrvalue} but this method is not exposed to ActiveX interface, most probably because type descriptors and flattened strings are data format internal to LabVIEW.
However you can make a subVI that inputs the target VI name and returns the name of all controls on the Panel invoking the internal method. Then you call this VI via ActiveX to retrieve the list of Front Panel controls of the target VI.
LabVIEW, C'est LabVIEW

How Do I set up a LabView ActiveX server?

Are there any documenation or sample program which is about how to setup a LabView ActiveX server? my C++ program will dynamically call VI and then pass the integer to Labview program via ActiveX and then perform some control of digital oscillscope. Do anyone help me? thanks for help so much......It is in hurry......please help..............
CowCow

From the NI knowledge base...
Problem: How do I enable LabVIEW as an ActiveX Server?
Solution: Under Edit >> Preferences >> Server: Configuration, select ActiveX as a protocol and enable all server resources. Under Edit >> Preferences >> Server: Exported VIs, list the name of all VIs that can be accessed remotely. You can include the full path to the VI, or just list its name. Wildcard characters are valid. You can explicitly deny access to certain VIs by clicking the Deny Access button. Note that changes to the Server will not take effect until LabVIEW is relaunched.

I have developed one application software using Labview 8.5 in which i am collecting data from 5 temprature controllers on serial line.

I have developed one application software using Labview 8.5 in which i am collecting data from 5 temprature controllers on serial line.
This software is done and successfully installed on customer side.
Now the customer want this software to be run on server and some fixed number of clients should access this with some login security.
Is this fascility available with National Instruments in which i can installed this standalone application in server and allow some clients to access this with
proper login?
Regards,
Vaibhav

Yes, that is possible. Multiple clients can access the VI using Web Publishing tool and control the VI operation. However, only one client has the control of the VI at one instance. The client needs to right click on the web page displaying the front panel of the running VI and ask for control and then release control after the execution to let other clients to ask for the control subsequently. The LabVIEW VI needs to be running upon the server computer since closing LabVIEW also closes the Web Publishing server and disconnects the currently connected clients.
Please check this link http://zone.ni.com/devzone/cda/epd/p/id/3797
You might want to create a stand alone executable for the same and then publish it over the internet for access by your desired clients. In that case, check this link http://digital.ni.com/public.nsf/allkb/3A0087DBE9D31F9286256B19000A2DAE?OpenDocument

Labview activex server registration incomplete.

I made an ActiveX server using LabVIEW. The server should communicate with Excel. During installation of the server I register the server: "Server.exe /RegServer". When I try to call the server from Excel/VBA, it responds with "Run-time error '429': ActiveX component can't create object". The server is only recognized by Excel after I have started and stopped the server once.
When investigating the registry, it appears that the difference between registering with /RegServer and just starting and stopping the server are the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ServerName.Application
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ServerName.Application.6
To my opinion the /RegServer commandline option does not do the whole job.
Also /UnRegServer does not remove the above mentioned registry keys.
Is this a bug or just normal behaviour?
Has it been solved in newer LabVIEW versions (I use 6.0.2)?

Hi,
I've tried to call a with LabVIEW 7.1.1 created activeX server. This works without any errors. I've attached my code.
As for the register keys, this seems to be the default behaviour of ActiveX, each server has a key without version number e.g.
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ServerName.Application
And one or more with a version number:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ServerName.Application.6
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ServerName.Application.7 Kind regards,
Karsten
Applications Engineer
National InstrumentsMessage Edited by KvZ on 07-27-2005 02:37 PM
Attachments:
ActiveX Server.zip ‏45 KB

Reading Tables in MS WORD using LabView & ActiveX

I would like to be able to read tables contained in an MS WORD document using LabView and ActiveX. (I've been successful in doing this with Excel files. ( I am not using the report generation toolkit.) After searching numerous posts with similar questions about LV & ActiveX I've not found any solution to my specific app. In LabView I'm successful doing an "Automation Open", followed by a Property Node, to an Invoke Node ("Documents" Open) and then a Property Node with "TABLES" selected. That's where I get stuck. Now that I have a reference (?) to "Tables" I can't seem to figure out what I need to connect and follow that with in order to now read the Tables in my document. I guess that's due to my lack of understanding as to what exactly this "Table" property node output actually is. Can someone tell me what this reference output is referring to and how I can get to the Tables within the document from it? I've tried connecting both a property node and invoke node to no avail. Can someone point me in the right direction?
Thanks. Ed

Dear Ed,
Figuring out "what I need to connect and follow that with" relates to the organization of the MS Word Object Model. Please refer to the Word Object Model Reference MSDN >> MSDN Library >> Office Development >> 2007 Microsoft Office System >> Word 2007 >> Word 2007 Developer Reference >> Word Object Model Reference. You can think of the Object Model as a software hierarchy. You must start at the top of the hierarchy and work your way down to the item of interest. You must descend the hierarchy one level at a time; you cannot skip levels.
At each level of the hierarchy, you have access to the methods and properties of that "level".
Click on the Tables Collection link from the Word Object Model Reference page. Notice how Tables is at the top of the hierarchy. When you have a LabVIEW reference to a Tables object (technically speaking a collection), you then have access to the methods and properties supported by this "level". Click on the Tables Object Members link. Here you will see that the Tables collection supports two methods, Add and Item, and also supports five properties, Application, Count, Creator, NestingLevel, and Parent.
Notice how Mike gets the Count property of the Tables object. He then uses the Item method to return a reference to an individual table. The key thing to take away from this is how Mike uses the Item output node to gain access to the methods and properties of the Table object (not the Tables collection). Mike has descended the hierarchy from Tables to Table. He descends the hierarchy again with the Cell method and Range property of the Table and Cell object respectively. Lastly, the Text property of the Range object, "Returns or sets the text in the specified range or selection."
Effective LabVIEW programming with this type of ActiveX control requires a fair understanding of how Microsoft organized its software libraries. The Object Model Reference is a good place to start visualizing how these libraries are organized. Thank you for using the forums Ed, and thanks for your post, Mike.

Labview ActiveX Server PATH if in development environment

I'm using Labview 2010 to build an ActiveX server. I can access the executable as an activeX sever from both C and LabVIEW clients. No problems there. But now I want to do some debugging in the development environment while accessing the program via an ActiveX client. In such a situation, how do I change how I access the VI's in the project? I tried using the lvproj in place of the EXE, but this was insufficient. Seems a little convoluted with the changes required to do this debugging.

I think that I already have my answer in that I can not generate a LV event through an ActiveX interface regardless of the type of control, but if you want to play with it, here is a Demo which I derived from the previous link given above. Within the attached ZIP file, read the "Readme.txt" file for instructions. Specifically the program assumes that is located in C:\tmp, since LabVIEW doesn't like relative pathes in both the build and reference node paths, (so they are coded with absolute pathes). If you use C:\tmp, the instruction in Readme.txt should work.
What happens is that you click on the button in the ActiveX Client running in the LV development space.
You can see the control value change shade/color in the ActiveX Server EXE application,
but because no event is generated, the Event Handler does nothing.
I know that I can poll the value of the control and then use the Value (Sgnl) property control to generate an event, but this isn't a very clean solution.
All code in the ZIP file is LabVIEW 2010 release1
Attachments:
LV ActiveX Demo.zip ‏172 KB

How to create web applications with the LabVIEW web server

Wonderful Forum,
I've noticed that sometimes it can be tricky for LabVIEW users to learn how to create their own custom web clients using the LabVIEW web server. I created a LabVIEW web development community group and wrote some tutorials to teach the basics of creating web clients using HTML, Javascript, and AJAX. The idea is that LabVIEW users without any web background can quickly look at some tutorials and examples to get started on their own projects.
https://decibel.ni.com/content/groups/web-services
What do you think?
Joey S.
Software Product Manager
National Instruments

Hi Joey,
A great idea! I recently presented at a local user group meeting about my WebSockets API (see the links in my signature). I've uploaded the presentation and the demo code I gave to our UG here.
I think the barrier to entry is with needing to know the web languages (e.g. html/css/js) as well as writing your LabVIEW code. I have joined the group and look forward to seeing some interesting content on there! Certainly some demos of using AJAX to make requests to Web Services and do something with the data (e.g. display on a graph) would be a good place to start.
Certified LabVIEW Architect, Certified TestStand Developer
NI Days (and A&DF): 2010, 2011, 2013, 2014
NI Week: 2012, 2014
Knowledgeable in all things Giant Tetris and WebSockets

Start application remotely

Hello,
I have build one java cluster application with CORBA tech. One is master node, the rest is slave node.
Because I will have more than 20 slave nodes, on which will CORBA application run. The problem is I have to login these 20 machines to start corba application, I am wondering if there some way to start all corba application remotely, for example web service?
Any idea will be appreciated.
Grace

You do of course realize that something has to be running on the remote machine that waits for someone to 'login' and start an application right? Telnet does that. You can write your own as well.
Otherwise you need to set it up so the remote computers are always running the software.

Getting clusters from LabVIEW ActiveX Server with Excel/VBA

Hello,
my colleague and I are trying to control a LV from Excel (VBA) by ActiveX.
I.E.:
We do something like :
Set LV = createObject("LabVIEW.Application")
Set VI = LV.GetVIReference("Path_to_VI")
ParamNames(0) = "Input1"
ParamNames(1) = "Input2"
ParamNames(2) = "Output"
ParamValues(0) = 1
ParamValues(1) = 3.1415
Call VI.Call(ParamNames,ParamValues)
msgbox("output =" & ParamVals(2))
This works perfectly for simple data types (int, double, float, string, etc )
Now we need to transfer more complex structures, which are originaly LV-clusters.
But we did not find any clue on how do that (especially receive clusters) in the help or on the internet.
Is there any chance to succeed ???
TIA,
Thomas

Actually, working with clusters is really really easy. Through the magic of - well something - a cluster in LV comes out in the VBA environment as an array of variants. There was an activex example that shipped with V7.1 that showed this very thing. I couldn't find them in V8 so here is the 7.1 stuff.
Check out the macros in the Excel spreadsheet... This show running the VI in the development environment, but if this looks interesting I can fill you in on how to make it work in an executable.
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
Attachments:
freqresp.xls ‏49 KB
Frequency Response.llb ‏155 KB

Cannot start application deployed using Weblogic console after stop

Hello all,
I have deployed an ear file using Weblogic console. If the app. is running, I can press stop and get the 404 error...after that I press start, and get a 503 error. Right after the app is deployed, and started, it always comes up fine. But when the application is running, I must click stop, start, stop, start to get the app to start.
To start the app. I select, start and then "servicing all requests". To stop the app, I select stop and then "Force stop now". I have implemented a subclass of ServletContextListener to handle the start and stop. These methods do get called.
The 503 did not cause any errors to be found in the weblogic.log, stdout.log or access.log.
Does anyone have an idea how to start the app after it is stopped the first time?
Thanks in advance.
-PD
Edited by pauladecker at 10/01/2007 1:47 PM

Hi,
As you see this error.
[J2EE:160149]Error while processing library references. Unresolved application library references, defined in weblogic-application.xml: [Extension-Name: oracle.webcenter.framework, Specification-Version: 11.1.1, exact-match: false], [Extension-Name: oracle.sdp.client, exact-match: false].
there is some miss match in library reference.
Please check with your weblogic-application.xml file.
Regards,
Kal

How do i start a remote session into my server

I love how we only get the basic of info on some of these.
What server OS (I'm going to assume its a windows box, since it's posted in Windows - Smart me :o))
SBS, 2003, 2008/R2, 2012/R2, are you taking about remotely, from externally, internally, for support or for everything?
Information is key here, VPN is secure and RDP via the web - and you are basically opening the doors to burglars.
Is it a VPS, or a customers system, is it your home lab (as some ISPs will block incoming connections so your stuffed), please clarify.

Depends how your server is setup. If it is in house you usually use RDP.
So you run MSTSC and then type in the computer-name / IP of your server.
Another options is to have remote tools installed like VNC, Teamviewer etc.
For all that to work though the server has to be setup correctly, the right permissions have to be granted and the firewall has to be opened appropriately.

Using LabVIEW Web Server in RT for other web applications

I'm looking to find out whether or not I can host other web page technologies (Java Scripts for example) on web pages hosted on a LabVIEW RT target. I'd like to be able to post a configuration or status page on the web server as well as the standard VI Front panel page.
Thanks,
Jason

Hello,
LabVIEW RT Web Server is not meant to be used for other things different from LabVIEW VIs. This feature is not supported.
Ricardo S.
National Instruments.

Need help solving Error 3005 using activex server and automation open.

Hi,
I am trying to use a master vi to call a slave vi by using the activex server option. The steps i have taken are:
1. In the slave vi, go to advanced tab in build options and check enable activex server.
2. After building the .exe go to the command prompt and type the path to the .exe followed by /RegServer. Ex: C:\slavevi\applicatoin.exe /RegServer. This will add it to the activex plugin list.
2.a restart labview if it was open.
3. In the master vi use automation open, create a constant for the automation refnum and right click it. Select browse. Browse to the name you chose in the enable activex server field from step 1. Choose “show creatable objects only” and pick the _application one.
4. use an invoke node and connect automation open to it. Choose getVIReference. This will drill down to the actual vi you want to control.
5. The path will be the install path + the vi name. Ex: \slavevi.exe\mainviname.vi.
These steps actually worked on the machine that I built the vis on but if I build the exes and transfer them to another computer I get error 3005 when it tries to open the slave.exe program. In each instance the master and slave vis are both local (not trying to go through a network or anything). I have registered the slave.exe and .tlb file on the new computer, rebooted etc and nothing seems to work. I also tried running the master vi as source code but that didn't work.
The master vi was originally built in labview 7.1 and the slave is built in LV 9.01 but I have since upgraded the master vi to 9.01 to try and resolve the problem.
Is there something that happens during a build that needs to be replicated on the new computer?
Thanks for any help.
Solved!
Go to Solution.

Help needed ..
am also getting this error 3005 in automation open in LV.
i am trying to design a GPS software by integrating Google Earth Application in LV. i am successful in that. but when i am trying to use its properties like drawing a pilygon or point at particular longitude and latitude am getting error.
I read that mass complie thing was for older LV versions.
am using LV2009.
Attached is the part of code thats creating trouble.
Attachments:
GE.JPG ‏19 KB

Starting applications remotely using LabView activeX server

Similar Messages

Maybe you are looking for