According to the BACnet protocol documentation:

Indicates the alarm state for the physical door and is restricted to the values NORMAL and those contained in Alarm_Values and Fault_Values. When no alarm or fault condition exists for this object, this property shall take on the value NORMAL. It is considered a local matter as to when this property is set to a non-normal value. It is up to the internal control logic to take Lock_Status, Door_Status, Present_Value and information from other objects into account when calculating the proper alarm state. However, this property cannot take on any value which is also in the Masked_Alarm_Values list. If the property is currently set to a specific state and that state is written to the Masked_Alarm_Values list, then the Door_Alarm_State will immediately return to the NORMAL state. This property, if present, is required to be writable when Out_Of_Service is TRUE.

Property doorAlarmState of object accessDoor can be read and written using a single IOTag.

Text Parameters

Numeric Parameters

Tag Value

An integer representing one of the options of enumeration <BACnetDoorAlarmState>.