Write fails when adding a property transfer definition for a tank
"The item is no longer available in the server address space" After, in intervals i get write fails for all these tanks. In the event details of one write fail is the same error "opc_e_unknownitemid". So i wonder what I might be doing wrong here, I'm missing something ? Do i have to restart the OPC service every time i add a property transfer definition ?
The system is online as there are other tanks up and running. I hope i have explained it well. Best regards Johan
opc_e_unknownitemid = the destination server don't recognize the item no more.
What is the destination server/PLC?
Obsoleted item? Upload made too long ago?
IMHO: 97.8% of all property transfer issues stem from a choked destination server or improper configuration (too frequent writes, etc)
Thanks for the replies.
I think I found the issue, linking not done properly with PLC and OPC.
As I'm new to the system and I haven't done the original configuration and setup it's all a bit confusing.
After fixing the configuration the write fails began to reduce, but it took some time before all of them were gone.