The message Unsupported Unconfirmed service is displayed in the Standard output Window of an UNC-520.

Issue

The message “Unsupported Unconfirmed service” is displayed in the Standard output Window of an UNC-520.

Product Line

TAC I/A Series

Environment

Niagara G3, R2, UNC-520, ENC-520

Cause

Some manufactures’ BACnet controllers use unconfirmed service which the UNC/ENC does not handle so they are ignored by the UNC/ENC.

Resolution

These are nuisance messages which cause no issues. The messages can be ignored.