Deploying an RT app with Network Variables

David Thomson Original Code Consulting
www.originalcode.com
National Instruments Alliance Program Member
Certified LabVIEW Architect
There are 10 kinds of people: those who understand binary, and those who don't.

   Oops - the message got posted before I even wrote it - sorry!
   I'm working on a simple RT daq app that acquires 32
channels of AI and pops them into a network variable for a host program
to read several times a second. I build and deploy the app as a
startup so that it starts every time the PXI RT system boots. I
want to move the RT box to another computer that has LV, but not LV-RT.
   I first tried using the variable server on the host.
The LV box boots and the app starts. I start my program on the
host, and it connects. Everything is fine.
   However, to make the transition to another computer
easier, I would like to host the network variables on the RT box.
Then I don't have to deploy them to the network variable engine on the
new computer. When I write the program this way, the RT half
still boots and runs. Using the variable monitor program, I can
see that the variables are hosted on the RT box and are being
updated. So I open the host program in LV and start it. It
has to deploy some sort of connection to the network variables, so a
deploy dialog pops up. It finds out that the RT box already has
an app running and says that if I continue to deploy, that app will be
stopped. If I cancel, the host app doesn't run. If I don't
cancel, the RT app stops. I have to connect to the RT box again
and redeploy the RT app. Then both are running and I get data.
   Is there a way to host the variables on the RT box, and
have the RT program start automatically on bootup, and have LV for
Windows start a program that gets the variables off the RT box from a
Windows machine that doesn't have RT?
Thanks,
   Dave
David Thomson Original Code Consulting
www.originalcode.com
National Instruments Alliance Program Member
Certified LabVIEW Architect
There are 10 kinds of people: those who understand binary, and those who don't.

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testRemoteLogging.zip ‏124 KB

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<module-descriptor external="false">
<root-element>web-app</root-element>
<uri>WEB-INF/web.xml</uri>
</module-descriptor>
<module-descriptor external="true">
<root-element>wldf-resource</root-element>
<uri>META-INF/weblogic-diagnostics.xml</uri>
</module-descriptor>
</module-override>
<config-root>/export/home1/tecapp/BrowserR08.003/plan</config-root>
</deployment-plan>
I do not know wether i will require the other module descriptor definition in this Plzn.xml. Now when I go to following link.
Deployments --> MyApp --> Testing
It gives me following url as a test page:
http://localhost:7001/BrowserWeb/servlet/BrowserServlet
as soon as i click on to the above link it redirects me to following.
http://localhost:7001/BrowserWeb/servlet/BrowserServlet/servlet/BrowserServlet
Same if i remove these context-root part my normal Testing menu shows me following link as my webapp access path
http://localhost:7001/BrowserWeb <-- My war file name is BrowserWeb.war so it is default name of my deployed application if i am not wrong
and as soon as i click on above link it redirects me to the following one.
http://localhost:7001/BrowserWeb/servlet/BrowserServlet
It means application server know that my full web access page is with '*servlet/BrowserServlet*' because its adding it in both the cases.
What I want is a constant URL whcih does not change?
Hope this helps :)

Network variable don't work with VBAI 2010 and windows 7

Hi,
I actually have an issue with 2 EVS 1464 (windows 7) and VBAI 2010.
I have to use network variables to allow communication between both EVS but I can't use it. My network is ok (I can make a ping betwen both equipement) but I can(t acces the network variable.
I have made a test with VBAI2011 EVS / VBAI2010 PC windows XP --> it works. (but I don't want to use VBAI 2011).
Have you got some solutions to solve my problem?
Thanks
Ulysse
Solved!
Go to Solution.

Hello,
Here are several documents which could be useful for you :
Using the LabVIEW Shared Variable
Troubleshooting Network-Published Shared Variables
How Can I Use Shared Variables to Transfer Data from Vision Builder for Automated Inspection (VBAI) ...
You can also try something. For this, you must go to the VBAI EXE here:
For 32-bit machines:
C:\Program Files\National Instruments\Vision Builder AI 20XX\
For 64-bit machines:
C:\Program Files (x86)\National Instruments\Vision Builder AI 20XX\
Right-Click on 'Vision Builder.exe' then select Properties. Make sure that 'Run this program as an administrator' is checked.
Click OK and then try running VBAI again. You may have to re-deploy the variables in variable manager before they will properly work.
Regards,
Jérémy C.
National Instruments France
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Deploying an RT app with Network Variables

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