Issue
Communication of BACnet Protocol across different subnets
Can see BCX 4040 on Infinity side but will not learn in on the BACnet side.
Product Line
Andover Continuum
Environment
- BCX (4000, 4040)
- B4920
- Continuum Workstation
Cause
BBMD configuration
Resolution
Typical Multi-Network BBMD Setup 1
In this Scenario, the controllers in Remote Building A cannot send or receive BACnet broadcast data from
controllers or the Workstation on the Main Building Network.
Solution 1: Configure Building A BCX1-R as a BBMD, and Cyberstation as a BBMD
Typical Multi-Network BBMD Setup 2
In this Scenario, the controllers in Remote Building A cannot send or receive BACnet broadcast data from
controllers or the Workstation on the Main Building Network.
Solution 2: Configure Building A BCX1-R as a BBMD, and Main Building BCX1-CR as a BBMD
Workstation BBMD configuration
BACnetPreferences
Located in the lower right hand side of the screen in the icon tray right click on the Continuum icon and select BACnet Preferences
NOTE: After Workstation configuration and Bacnet Preferences have changed the Workstation will need to be restarted.
BCX BBMD Configuration
- Enable the BBMD on the configuration page
- Save changes and submit to controller
- After controller restarts select the BBMD link on the left side of the web configuration page.
Enter the IP address for the BBMD device on the other side of the router
After configuration of BBMD’s on each side of the subnet you will be able to receive and broadcast
BACnet messages across an IP router.
THE GOLDEN RULE HERE IS ONLY ONE BBMD PER SUBNET.
Otherwise you’ll create a broadcast storm that that will not be good for the network performance and could possibly cause controllers to go offline.
After successful creation of BBMD’s on each side of the router, go into Continuum explorer and perform a “Find new bacnet devices”from right click on the root.
