What This Reference Design Is
A setpoint advisor for central HVAC that checks its own writes.
The gateway brings the HVAC controller and the power meter into one table. It works out a suggested setpoint from the building's own history and writes it back.
A write is not trusted until the value is read back and compared. If it does not match, the old value is restored automatically.
It ships in watch-only mode. An operator must enable control, and a site engineer must sign off the safety limits.
Limits: the suggested setpoint comes from this building's own history. No energy-saving percentage is claimed, because there is no baseline. The plant's own interlocks override every write.