OPC Server Error Codes

Error Code
0 No Error
1 Failed to load OPC Automation DLL
2 Connection request to OPC Server failed
3 OPCGroups object not retrieved
4 Failed to add I/O Group to OPC Server
5 OPC Server Status is unavailable
6 OPC Server is not in running state
7 OPC thread heartbeat fail
8 Unknown error
9 Maximum internal error