Memory recovery scheme and data structure in a heating, ventilation and air conditioning network

Abstract

The disclosure provides systems and methods for updating a parameter in a device in an HVAC network. In various embodiments, a method comprises a sending by an interface device to the device: a) a parameter value change message, and b) a new value of an installer parameter. The method includes the device determining if the parameter update is within an allowed range, and updating the parameter in a memory of the device if the parameter update is within the allowed range. The method further includes the device sending the parameter to an interface device. The method still further includes relaying the parameter to an active subnet controller by the interface device. In further embodiments, the method determines whether a parameter definition is a changed parameter definition. If the definition is the changed parameter definition: a device definition parameter message is sent to the interface device from the device in the HVAC network. A device parameter value is also sent from the HVAC device for each parameter in a same group of parameters affected by the change of definition.

Dependencies are inferred from the claim text.