BACnet standard improves alarm handling

Changes to the newly published BACnet standard from ASHRAE will encourage smart lighting controls and other building automation control systems.

03/15/2013


ANSI/ASHRAE Standard 135-2012, BACnet – A Data Communication Protocol for Building Automation and Control Networks, allows building equipment and systems manufactured by different companies to work together.

The new standard is being published due to the wide-reaching changes in alarming functionality made by addendum af to Standard 135-2010. This edition of the standard also includes recently adopted changes for the lighting industry.

Addendum af provides improvements to alarm handling in BACnet including: Improved fault handling, temporary alarm recipient subscriptions, improvements in scalability of alarm distribution and simplifications in alarm distribution to support less complex products.

Addendum af contains 32 parts. Changes include separating the detection of fault conditions from intrinsic reporting and making sure event reporting property descriptions are consistent. Other addendums include changing the description of the reliability property and improving fault detection in event enrollment objects and the specification of event reporting.



No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
2016 Product of the Year Finalists: Vote now; Data center Q&A; LED codes; Smart buildings
Fire pump power system design: How to design safe, reliable fire pump power service; Water management in commercial buildings; Emergency egress, illumination
Pump technology design: Selecting pumps and pipes; Class A office buildings; NFPA 101-2015; ASHRAE 90.1 updates; Motors, drives, and HVAC efficiency
Designing generator systems; Using online commissioning tools; Selective coordination best practices
Understanding transfer switch operation; Coordinating protective devices; Analyzing NEC 2014 changes; Cooling data centers
Designing positive-energy buildings; Ensuring power quality; Complying with NFPA 110; Minimizing arc flash hazards
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
click me