Hello,
Here is the situation: I used a VI-based server to monitor and log 3 output (write) Tags, and about 250 input (read) Tags. The system performed as I expected but then I wanted to move the whole system into a different directory in Windows2000. After adjusting all file paths, including the databse paths in the .scf, and registering the server in its new location, I restarted the new system and the input (read) Tags no longer functioned correctly.
Opening the Tag Monitor shows that the output (write) Tags are gathering data from my application correctly. I changing one of my input Tags to input/output, and then tried writing directly to it from the Tag Monitor, but the value did not change. I have also tried the follo
wing to no avail:
-removing all databases from my computer;
-recreating the scf from scratch;
-restoring the original system that worked previously (it now no longer works!)
-loading the Tag Engine with a VI-based server from the Labview examples (the example works fine), then reregistering my VI-based server.
I believe the problem might have something to do with the BVE-refnums that the VI-based server uses to determine which input (read) Tag is which. I think that the server is no longer able to obtain these refnums (the server does not require BVE-refnums for output Tags, hence they work), but I cannot be sure since it is impossible to debug the server VI while the Tag Engine is running. Missing BVE-refnums might also explain why I was unable to write to the I/O Tag in the Tag Monitor.
Does anyone know what may be going wrong, or how I might debug the server VI? I am convinced that my code is correct, since the system worked originally. It must therefore be an scf, Tag E
ngine or database configuration problem, mustn't it?
