OPC HDA Server Details
This chapter provides additional information on the WinCC OA OPC HDA Server.
Invalid Bit Mapping
Following mapping is used between the invalid bits in WinCC OA and the OPC quality information.
WinCC OA _offline.._bad | WinCC OA _offline.._default | OPC quality |
---|---|---|
FALSE | FALSE | good, non-specific (11000000) |
FALSE | TRUE | good, local override (11011000) |
TRUE | FALSE | bad, non-specific (00000000) |
TRUE | TRUE | bad, non-specific (00000000) |
Debug-Levels
In order to detect possible sources of error during the driver actions the command line options can be used for debugging. Use -helpdbg to view more information on all other options (see also Manager Options).
Debug level | Description |
---|---|
-dbg 10 | General debug information for the OPC HDA Server manager. |
-dbg 11 | Information regarding the function calls of the manager. |
-dbg 12 | Detailed information for the queried historical values. |