Добры день, в первую очередь попробуйте выполнить рекомендации данные в статье
General Troubleshooting
1)Make sure that the shared variable is set to Network-Published. To check this right-click on the variable and select Properties.
2)Make sure that the library containing the shared variable has been deployed. To check this right-click on the library hosting the shared variable and select one of the deploy options. You can use the Distributed System Manager to check if the variables has been deployed by navigating to Tools » Distributed System Manager. If you're using LabVIEW 8.5 or earlier, you can use the Variable manager, which can be accessed by selecting Tools » Shared Variable » Variable Manager.
3)Make sure that there is not a personal firewall enabled on either computer that could be blocking the NI-PSP packets. You can check the status of the firewall by going to the Security Center in Control Panel. For more information on potential firewall problems please see Developer Zone Tutorial: Configuring Software and Hardware Firewalls to Support National Instruments Products. Firewall issues would result in error -1950679034, the shared variable has no value.
4)Ensure that your anti-virus software does not include a firewall.
5)Check to see whether the shared variable is hosted on a computer that is on the same IP subnet. If it is not, you can register the remote computer by going to Tools » Shared Variable » Register Computer...
6)If there are multiple network cards on the PC attempting to access the shared variable try disabling the network cards not being used. Also, check that the appropriate network card is set as the primary network by referring to KnowledgeBase 42I77BXJ: How do I Connect to Ethernet Targets with Multiple Network Cards in the Host?
http://digital.ni.com/public.nsf/allkb/ ... enDocumentПробовали ли вы их выполнить?
Так же можете во время выполнения своей программы попробовать проследить публикацию своих переменных в сети, запустив NI System Manager
и проверить работоспособность системных служб, отвечающих за данную переменную, упомянутых в данной статье
http://ae.natinst.com/public.nsf/web/se ... enDocument