liakofan 0 Report post Posted February 10, 2012 Hello everyone, Basically i have 2 VIs, one running on a PXI, lets call it PXI.vi and one on the pc, GUI.vi I started testing my application some days ago and after 3 hours of running i got the error in the picture. Error -1073807339 occured at VISA Write in PXI.vi Reason: Timeout expired before operation completed. Then immediately also this error: Unable to locate variable in the shared variable engine. Deployment of the variable may have failed. I restarted the PXI and started the test and it happened again after 2 hours. The third time even sooner. It is always 2 variables that cause this problem.They are used to pass information about error happening on a instrument. So actually they are not even used when giving the message. I check them in a loop every second. They are not buffered. I initialize them when the vi starts I am using Labview 2011 and windows 7 Thank ou in advance for your time. Quote Share this post Link to post Share on other sites
liakofan 0 Report post Posted February 13, 2012 Maybe someone else has the same or similar issue so i post what seems to be the solution. I changed the address of the shared variable. It had the DNS name of the PXI and i changed it to the IP address. I don't believe it should make a difference but it stopped giving an error. Quote Share this post Link to post Share on other sites
crelf 277 Report post Posted February 13, 2012 I wonder if your DNS server was unavailble momentarilty, and couldn't resolved the IP address? Quote Share this post Link to post Share on other sites
asbo 156 Report post Posted February 13, 2012 A lease time of 2-3 hours from your DHCP server could break this too, if the PXI got juggled to a different IP and the DNS simply hadn't propagated to the PC yet. Quote Share this post Link to post Share on other sites
Nitin Singh 0 Report post Posted March 30, 2012 you to start from the beginning to rectify the deployment problem. -- their must be same version of labview on both (host and target), i.e, if you are using labiew 11 on host then it must be labview 11 on target(Pxi). -- make a proper real time format code. -- for real time, shared variable selection is more important (no. of sample, clock....etc) Quote Share this post Link to post Share on other sites
flintstone 3 Report post Posted May 3, 2012 A lease time of 2-3 hours from your DHCP server could break this too, if the PXI got juggled to a different IP and the DNS simply hadn't propagated to the PC yet. I guess this would also break the version where the IP address is used instead of the DNS name. Quote Share this post Link to post Share on other sites
