Vi server exe

Question

Hi Experts,
It has been some time since I tinkered with VI Server, and cannot seem to do what I want.
In a nutshell, I want to be able to access the controls of a VI that will be running in a compiled exe (called watchdog.exe) from another VI, in this case main.vi
I have attached a sample zip to show the behaviour.
For some reason, I can query the control values of the executable, just cannot seem to set them properly. Am I doing something silly here.
Note: the queried value seems to reflect the correct value, but it is not showing on the front panel of the built app.
If I run both main.vi and watchdog.vi from the LV project everything works as expected, but when I run watchdog.exe it does not update the front panel controls.
Help!
Thanks
nrp
nrp
CLA
Solved!
Go to Solution.
Attachments:
Watchdog Separate Exe.zip ‏134 KB

Answer 1

NRP,
i made some further testing and it seems that you cannot access the watchdog via vi server as long as your access is tried in the development environment. Building an exe from the accessing code works if you do the following:
a) Configure your watchdog to be accessable via a certain port. You can do this by right-clicking on "My System" in your Watchdog.lvproj and select Properties. Activate TCP/IP access in the VI Server: Configuration tab. Set up the port or the server name as desired. Please make sure that the port is not blocked by a firewall.
b) Make sure that you enter a '*' in the tabs VI Server: Machine Access and VI Server: Exported VIs. This will grant access from all machines to your application using the selected port and will export all running vis in order to access them.
c) Rebuild the executable. Open the Watchdog.ini which should be rebuild as well. It should include new additional entries similar to:
server.vi.access="+*"
server.tcp.acl="290000000A000000010000001D00000003000000010000002A10000000030000000000010000000000"
server.tcp.enabled=True
server.tcp.port=<YourPort>
d) Create another LV project and include a new VI there. Implement something like this:
e) Create an executable of the new VI. No special settings required here. 
f) Close the project Watchdog.lvproj.
g) Run both executables. It should work.
Please note that accessing VIs using ActiveX might be a better solution than this.
hope this helps,
Norbert 
Message Edited by Norbert B on 05-11-2009 05:03 AM
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.
Attachments:
Access.PNG ‏8 KB