ATLANTA, GA — The American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) has proposed an addendum designed to help building owners and consultants find clear specifications for interoperable BACnet systems more easily. ANSI/ASHRAE Standard 135-1995, BACnet — A Data Communication Protocol for Building Automation and Control Networks — is the only open, consensus-developed standard in the building controls industry.
According to ASHRAE, the proposed addendum “d” will replace the Conformance Class and Functional Group structure of the current standard with a new approach based on BACnet Interoperability Building Blocks (BIBB’s). The BIBB’s are grouped into the five areas: data sharing, alarm and event management, scheduling, trending, and device and network management.