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The Future of Interoperable Systems
Seems like just yesterday, it is now 21 years since the BACnet standard, ASHRAE 135, was approved and published. Since then much has happened.
& Angela Lewis
September Issue - BAS Column
it seems like just yesterday, it is now 21 years since the BACnet
standard, ASHRAE 135, was approved and published. Since then much has
happened. We had a brief, but furious industry debate over the
need for open protocols, and battles over which protocol to use.
Over the years, it has largely settled out, with essentially all HVAC
controls suppliers offering systems that use BACnet, while also fairly
strong support for other protocols, such as LonWorks, Modbus, and
various uses of XML and other web standards. In many ways, it
feels like this is an issue that has been settled and no further work
This really could not be further from the truth. While it should be expected that robust open protocols like BACnet will continue to be widely used, readily supported, and continually enhanced, we should also expect that new protocols will be needed for markets, applications, and use cases that are not readily supported by a control protocol such as what was originally defined in BACnet. Here are some examples of what will need to be supported in future protocol implementations:
There is ongoing
work from a number of groups to evaluate and develop new and expanded
open protocols. ASHRAE is very active in expanding BACnet, but
work is also ongoing from groups including NIST and the DOE to help
define standards for expanded capabilities and functionality for open
and interoperable systems.
About the Authors
Paul and IraPaul and Ira first worked together on a series of ASHRAE projects including the BACnet committee and Guideline 13 – Specifying DDC Controls. The formation of Building Intelligence Group provided them the ability to work together professionally providing assistance to owners with the planning, design and development of Intelligent Building Systems. Building Intelligence Group provides services for clients worldwide including leading Universities, Corporations, and Developers. More information can be found at www.buildingintelligencegroup.com We also invite you to contact us directly at Paul@buildingintelligencegroup.com or firstname.lastname@example.org
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