Issue
A Cisco Mediator controller is connected via BACnet/IP to a Niagara R2 UNC. The UNC station provides data to and receives commands from the controller.
The Cisco Mediator controller can read BACnet values but when it attempts to overwrite setpoints and issue commands, they do not work.
Environment
Niagara R2 all versions
Cause
The installation contains 3rd party BACnet controllers that must share data and commands.
Resolution
To allow other BACnet controllers to write values or issue commands to exposed Niagara objects, a special "BACnet" user is required for the station.
To create this special user, follow the steps listed on pages 4-6 & 4-7 of Tridium's BACnet Integration Guide.