Access Door Addendum Proposed for ASHRAE BACnet Standard

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ATLANTA – An addendum that would extend BACnet to support access control systems is being proposed by ASHRAE.

ANSI/ASHRAE Standard 135-2004, BACnet -- A Data Communication Protocol for Building Automation and Control Networks, is the only open, consensus-developed standard in the building controls industry.

Proposed addendum f to Standard 135 establishes a standard BACnet object, which represents a door operated as part of an access control system. It presents information and alarms about the door such as its status (open or closed, door open too long, door forced open), and provides means for controlling the door (lock, unlock, etc.), according to Bill Swan, chair of ASHRAE’s BACnet committee.

This object is the first access control work item to come out of the BACnet committee's Life-Safety and Security Working Group. The group is working to develop full support for access control in BACnet, with more extensions to BACnet to follow. The group is working closely with the Security Industry Association to develop common data models and methods for access control systems.

The proposed addendum will be open for public review until Nov. 6. To review the proposed addendum or to comment, visit www.ashrae.org/publicreviews.

ASHRAE, founded in 1894, is an international organization of 55,000 persons. ASHRAE fulfills its mission of advancing heating, ventilation, air conditioning and refrigeration to serve humanity and promote a sustainable world through research, standards writing, publishing and continuing education.

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