This OPC UA Variable, of DataType Float, represents the BACnet property Proportional_Constant. The OPC UA EngineeringUnits Property of the Variable represents the BACnet property Proportional_Constant_Units.

This property indicates the value and engineering unit of the proportional gain parameter that is used by the loop algorithm. It is used to represent the various forms of gain for the proportional control mode (overall gain, throttling range, or proportional band).