Issue
BACnet objects that are deleted from the BACnet side keep coming back.
Product Line
Andover Continuum
Environment
- Cyberstation
- BACnet IP devices
- BACnet MSTP devices
Cause
Require to be able to find all the BACnet devices, delete the ones not required, and not have them reappear in Continuum Explorer.
Resolution
When BACnet is enabled, Cyberstation will automatically add devices into its database when it hears an “I-Am” message containing a Device Identifier it does not already know about. There is no way to disable this behavior without shutting BACnet off completely.
I-Am messages are typically sent in response to Who-Is messages, but not always. Sometimes devices send I-Am messages when they start up for example. Also, since I-Am’s are typically broadcast across the entire BACnet internetwork, the Cyberstation is likely to hear I-Am messages for lots of different reasons, like in response to Who-Is/I-Am sequences it’s not directly a part of.
