BACnet XML Approved XML Addendum Approved for Publication! (1/10) Orlando, FL. Arguably one of the most significant addenda in some time, Addendum 135-2008t was approved for publication at the ASHRAE Winter Meeting in Orlando. The addendum specifies a standard way of representing data in XML that will give BACnet new capabilities for communications between a wide range of applications. Delta Controls HMI Recieved BOM Top Award Delta Controls is pleased to announce that our HMI product will be featured in the January 2010 issue of Building Operating Management (BOM) as a Top Products Award Winner.