XML Working Group

Official Web Site of ASHRAE SSPC 135

XML WORKING GROUP
XML Applications

This group is working on defining applications of the eXtensible Markup Language relevant to BACnet systems. It is also working on Web service definitions that will allow data exchange between building automation and control systems and various enterprise management systems.

Status

This group had its first meeting at Ohio State in September 2002 and is in the process of defining various application areas for XML technology. Among the "use cases" discussed were:

Object profiles
EPICS documents
Device Definition Language specification
Protocol analyzer traces, i.e., what is seen on the "wire", including timestamps, source and destination addresses, etc.
Router configuration information
Network topology information
Anything that can be "extended" by a "vendor", i.e., enumerations

The WG's first work product has been Addendum c to BACnet-2004 which specifies a Web Services interface to building automation and control systems. The addendum is in two parts. The first adds Annex N to BACnet that defines the BACnet Web Services interface, BACnet/WS. This interface is intended to be "protocol neutral" in that the defined Web Services can be used with any underlying protocol including BACnet, Konnex, MODBUS, LON or legacy proprietary protocols.

The second part of the addendum contains an addition to BACnet's Annex H, Combining BACnet Networks with Non-BACnet Networks, that prescribes the gateway mapping specifically to and from BACnet messages.

Convener: None. The work of this WG has been shifted to the newly formed (11/2012) DM-WG.