Redundancy

Redundancy is supported by the WinCC OA BACnet driver. Provided that:

A BACnet device can be accessed simultaneously by both WinCC OA BACnet drivers. This means that both drivers receive the spontaneous value changes and can also send BACnet requests.
The server Device IDs are different, if several BACnet drivers are connected to the BACnet network. It is necessary to use different settings inside the config file (entry: localDeviceId).
The driver data points for the first and the second server (*_2) are available and the Forward and Copy data point are set correctly in the config.redu file (a restart of the Event Manager is required). Check if there is the following entry in the config.redu:
```
[event]
fwdDpType = "_BacnetDevice.State"
```

Debug Flags


Number (name)	Meaning
2 (WORK)	General debug information for the current manager.
8 (QUERY)	Displays all query actions.
9 (DISPATCH)	Displays detailed TCP connection information.
10	Displays the information on read and write queues of the driver.
11	Returns debug information on alarm and event processes and on processing trend objects.
12	Displays information on browsing devices and objects.
DRV_ALERT	Displays general alert information of the driver.
25	Debug information for general processes and processing read and write requests.
26, 27	No specific information.