This OPC UA Variable, of DataType 0:Float, represents the BACnet property Derivative_Constant. The OPC UA EngineeringUnits Property of the Variable represents the BACnet property Derivative_Constant_Units.

This property indicates the value and engineering units of the derivative gain parameter used by the loop algorithm. It may be used to represent any of the various forms of gain for the derivative control mode (derivative time or rate time).