The BACnet gateway capability is in development. Our BACnet stack is a licensed copy of the same industry standard stack already used by many equipment manufacturers. When equipped with BACnet, this protocol replaces Modbus both on the RS-485 local network, and on the Ethernet network. The capabilities will be very similar to Modbus register reads and writes, except that instead of addressing registers, we now address properties and instances of objects. Look for BACnet mid-2007.