Variable Engine crashes when querying a tag that doen't exist with OPC client

[fruel]

Hi!

I'm working on a system based on LV 2011 DSC.  The system is multi-node and uses Sahred Variables.

We have a node that has everything available in the system and we would like to use the embedded OPC server in the Variable Engine to grab everything in real-time and feed a corporate historian system.

It happened couple of time that querying a tag that was not defined in NI (example: typo when typing an address in the OPC client) caused some instability and made the node crash.  After a reboot, everything was ok.

Is there a way to prevent a supervisory system of making crash a production system?  Can we limit the OPC server to the defined tags in the library?

Thanks.

Francois

[MoviJOHN]

The variable engine is known to be buggy from time to time, so be sure you upgrade all the related software to the latest version (or not 🙂

If it is possible, have the OPC client create a new tag for any that are queried, but do not exist.