In Niagara R2, what would cause an IP communication to the UNC to drop out? There are no errors in the standard output window.
TAC I/A Series
Niagara R2 All version; UNC-410, UNC-510, UNC-520
The same IP address is assign to more than on controller. Two UNC controllers are using the same IP address.
This symptom usually indicates a duplicate IP address condition. Under this condition the UNC will keep dropping offline for a period of time. The duplicate IP address situation will need to be corrected before reliable communications can be established.
Reassign one of the UNCs a different IP address that is not currently being used. Ensure that each IP address is only assigned to one controller.