BACnet - 9 ConditionTypes

9.2 Mapping of BACnet Event Notification to OPC UA Event Fields

The mapping of BACnet Event Notifications to OPC UA Event Fields is defined in Table 73.

Table 73 – Mapping BACnet Event Notification to OPC UA Event Fields

BACnet Event Notificaiton	OPC UA Event Field	Description
Process Identifier		Not visible for OPC UA client. Only used by the BACnetUaMapper internally.
Initiating Device Identifier	BaseEventType::SourceNode BaseEventType::SourceName
Event Object Identifier	BaseEventType::SourceNode BaseEventType::SourceName
Time Stamp	BaseEventType::ReceiveTime	The BACnetUaMapper creates the ReceiveTime if the BACnet device sends a sequence number as Time Stamp.
Notification Class	BACnetNotificationType:: Notification_Class
Priority	BaseEventType::Severity	The BACnet value range 0-255 is mapped to the OPC UA value range of 1-1000. In OPC UA 1000 is the highest Severity. In BACnet 0 is the highest Priority.
Event Type	BaseEventType::EventType
Message Text	BaseEventType::Message
Notify Type	BACnetNotificationType:: Notifiy_Type
AckRequired	AcknowledgableConditionType::AckedState
From State	BACnetNotificationType:: From_State
To State	BACnetNotificationType:: To_State

9.3 BACnetNotificationType

9.3.1 ObjectType definition

The BACnetNotificationType is formally defined in Table 74.

Table 74 – BACnetNotificationType Definition

Attribute		Value
BrowseName		BACnetNotificationType
IsAbstract		True
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the 0:AlarmConditionType defined in OPC 10000-9

0:HasProperty	Variable		Notification_Class	0:UInt32	0:PropertyType	M
0:HasProperty	Variable		Notify_Type	BACnetNotifyType	0:PropertyType	M
0:HasProperty	Variable		From_State	BACnetEventState	0:PropertyType	O
0:HasProperty	Variable		To_State	BACnetEventState	0:PropertyType	M

The BACnetNotificationType is an abstract type and cannot be used directly.

BACnet event information From_State and To_State is used to determine the active state of BACnetFaultNotificationType and BACnetEventNotificationType Conditions.

9.3.2 ObjectType Description

9.3.2.1 Variable Notification_Class

This OPC UA Property, of type UInt32, shall specify the instance of the Notification Class object to use for event-notification distribution.

9.3.2.2 Variable Notifiy_Type

This OPC UA Property, of type BACnetNotifyType, shall indicate whether the notifications generated by the object should be Events or Alarms. The value of the property is used as the value of the ‘Notify Type’ service parameter in event notifications generated by the object. The DataType BACnetNotifyType is defined in 10.4.20.

9.4 BACnetFaultNotificationType

9.4.1 ObjectType definition

The BACnetFaultNotificationType is formally defined in Table 75.

Table 75 – BACnetFaultNotificationType Definition

Attribute	Value
BrowseName	BACnetFaultNotificationType
IsAbstract	False
References	NodeClass	BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetNotificationType defined in 9.3
0:HasProperty	Variable	Reliability	BACnetReliability	0:PropertyType	O
0:HasProperty	Variable	Status_Flags	BACnetStatusFlags	0:PropertyType	O

The BACnetFaultNotificationType ObjectType is a concrete type and can be used directly.

The ConditionType Property ConditionClass set to SystemConditionClass.

9.4.2 ObjectType Description

9.4.2.1 Variable Reliability

This OPC UA Property, of DataType BACnetReliability, represents the BACnet property Reliability. The BACnetReliability DataType is defined in 10.4.28.

It provides an indication of whether the Present_Value or the operation of the physical I/O in question is “reliable” as far as the BACnet Device or operator can determine and, if not, why.

9.4.2.2 Variable Status_Flags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

It represents four 0:Boolean flags that represent the general health. The flags are IN_ALARM, FAULT, OVERRIDDEN, and OUT_OF_SERVICE.

9.5 BACnetChangeOfReliabilityNotificationType

9.5.1 ObjectType definition

The BACnetChangeOfReliabilityNotificationType is formally defined in Table 76.

Table 76 – BACnetChangeOfReliabilityNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfReliabilityNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetFaultNotificationType defined in 9.4.2.1

0:HasProperty	Variable		PropertyValues	BaseDataType[ ]	0:PropertyType	M

9.5.2 ObjectType Description

9.5.2.1 Variable PropertyValues

Represents the sequence of BACnetPropertyValues.

9.6 BACnetEventNotificationType

9.6.1 ObjectType definition

The BACnetEventNotificationType is formally defined in Table 77.

Table 77 – BACnetEventNotificationType Definition

Attribute			Value
BrowseName			BACnetEventNotificationType
IsAbstract			False
References	NodeClass			BrowseName		DataType		TypeDefinition		Other
Subtype of the BACnetNotificationType defined in 9.3
0:HasProperty		Variable			Event_Values		BaseDataType[]		0:PropertyType		M

The ConditionType Property ConditionClass set to ProcessConditionClass.

9.7 BACnetChangeOfBitStringNotificationType

9.7.1 ObjectType definition

The BACnetChangeOfBitStringNotificationType is formally defined in Table 78.

Table 78 – BACnetChangeOfBitStringNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfBitStringNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ReferencedBitString	0:Boolean[]	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.7.2 ObjectType Description

9.7.2.1 Variable ReferencedBitString

The Property ReferencedBitString represents the values of the referenced bit string.

9.7.2.2 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.8 BACnetChangeOfStateNotificationType

9.8.1 ObjectType definition

The BACnetChangeOfStateNotificationType is formally defined in Table 79.

Table 79 – BACnetChangeOfStateNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfStateNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		NewState	BACnetPropertyStates	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.8.2 ObjectType Description

9.8.2.1 Variable NewState

The Property NewState represents the new state of the monitored value.

9.8.2.2 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.9 BACnetChangeOfValueNotificationType

9.9.1 ObjectType definition

The BACnetChangeOfValueNotificationType is formally defined in Table 80.

Table 80 – BACnetChangeOfValueNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfValueNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		NewValue	0:OptionSet	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.9.2 ObjectType Description

9.9.2.1 Variable NewValue

The Property NewValue represents the new value of the monitored value.

9.9.2.2 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.10 BACnetChangeOfRealValueNotificationType

9.10.1 ObjectType definition

The BACnetChangeOfRealValueNotificationType is formally defined in Table 81.

Table 81 – BACnetChangeOfRealValueNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfRealValueNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		NewValue	0:Float	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.10.2 ObjectType Description

9.10.2.1 Variable NewValue

The Property NewValue represents the new value of the monitored value.

9.10.2.2 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.11 BACnetCommandFailureNotificationType

9.11.1 ObjectType definition

The BACnetCommandFailureNotificationType is formally defined in Table 82.

Table 82 – BACnetCommandFailureNotificationType Definition

Attribute		Value
BrowseName		BACnetCommandFailureNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		CommandValue	0:BaseDataType	0:PropertyType	M
0:HasProperty	Variable		FeedbackValue	0:BaseDataType	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.11.2 ObjectType Description

9.11.2.1 Variable CommandValue

The Property CommandValue represents the monitored command value.

9.11.2.2 Variable FeedbackValue

The Property FeedbackValue represents the feedback command value.

9.11.2.3 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.12 BACnetFloatingLimitNotificationType

9.12.1 ObjectType definition

The BACnetFloatingLimitNotificationType is formally defined in Table 83.

Table 83 – BACnetFloatingLimitNotificationType Definition

Attribute		Value
BrowseName		BACnetFloatingLimitNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ReferenceValue	0:Float	0:PropertyType	M
0:HasProperty	Variable		SetpointValue	0:Float	0:PropertyType	M
0:HasProperty	Variable		ErrorLimit	0:Float	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.12.2 ObjectType Description

9.12.2.1 Variable ReferenceValue

The Property ReferenceValue represents the monitored value.

9.12.2.2 Variable SetpointValue

The Property SetpointValue represents the setpoint value.

9.12.2.3 Variable ErrorLimit

The Property ErrorLimit represents the error limit. It is the LowDiffLimit if

a) the new state is LOW_LIMIT, or

b) CurrentState is LOW_LIMIT and the new state is NORMAL

It is the HighDiffLimit if

a) the new state is HIGH_LIMIT, or

b) CurrentState is HIGH_LIMIT and the new state is NORMAL

9.12.2.4 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.13 BACnetOutOfRangeNotificationType

9.13.1 ObjectType definition

The BACnetOutOfRangeNotificationType is formally defined in Table 84.

Table 84 – BACnetOutOfRangeNotificationType Definition

Attribute		Value
BrowseName		BACnetOutOfRangeNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ExceedingValue	0:Float	0:PropertyType	M
0:HasProperty	Variable		Deadband	0:Float	0:PropertyType	M
0:HasProperty	Variable		ExceedingLimit	0:Float	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.13.2 ObjectType Description

9.13.2.1 Variable ExceedingValue

The Property ExceedingValue represents the monitored value.

9.13.2.2 Variable Deadband

The Property Deadband represents the deadband value.

9.13.2.3 Variable ExceedingLimit

The Property ExceedingLimit represents the exceeding limit.

It is the LowLimit if

a) the new state is LOW_LIMIT, or

b) CurrentState is LOW_LIMIT and the new state is NORMAL

It is the HighLimit if

a) the new state is HIGH_LIMIT, or

b) CurrentState is HIGH_LIMIT and the new state is NORMAL

9.13.2.4 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.14 BACnetBufferReadyNotificationType

9.14.1 ObjectType definition

The BACnetBufferReadyNotificationType is formally defined in Table 85.

Table 85 – BACnetBufferReadyNotificationType Definition

Attribute		Value
BrowseName		BACnetBufferReadyNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		BufferProperty	BACnetDeviceObjectPropertyReference	0:PropertyType	M
0:HasProperty	Variable		PreviousNotification	0:UInt32	0:PropertyType	M
0:HasProperty	Variable		CurrentNotification	0:UInt32	0:PropertyType	M

9.14.2 ObjectType Description

9.14.2.1 Variable BufferProperty

The Property BufferProperty represents a reference to the log buffer.

9.14.2.2 Variable PreviousNotification

The Property PreviousNotification represents the count of the previous notification.

9.14.2.3 Variable CurrentNotification

The Property CurrentNotification represents the monitored value.

9.15 BACnetUnsignedRangeNotificationType

9.15.1 ObjectType definition

The BACnetUnsignedRangeNotificationType is formally defined in Table 86.

Table 86 – BACnetUnsignedRangeNotificationType Definition

Attribute		Value
BrowseName		BACnetUnsignedRangeNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ExceedingValue	0:UInteger	0:PropertyType	M
0:HasProperty	Variable		ExceedingLimit	0:UInteger	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.15.2 ObjectType Description

9.15.2.1 Variable ExceedingValue

The Property ExceedingValue represents the monitored value.

9.15.2.2 Variable ExceedingLimit

The Property ExceedingLimit represents the exceeding limit.

It is the LowLimit if

a) the new state is LOW_LIMIT, or

b) CurrentState is LOW_LIMIT and the new state is NORMAL

It is the HighLimit if

a) the new state is HIGH_LIMIT, or

b) CurrentState is HIGH_LIMIT and the new state is NORMAL

9.15.2.3 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.16 BACnetDoubleOutOfRangeNotificationType

9.16.1 ObjectType definition

The BACnetDoubleOutOfRangeNotificationType is formally defined in Table 87.

Table 87 – BACnetDoubleOutOfRangeNotificationType Definition

Attribute		Value
BrowseName		BACnetDoubleOutOfRangeNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ExceedingValue	0:Double	0:PropertyType	M
0:HasProperty	Variable		Deadband	0:Double	0:PropertyType	M
0:HasProperty	Variable		ExceedingLimit	0:Double	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.16.2 ObjectType Description

9.16.2.1 Variable ExceedingValue

The Property ExceedingValue represents the monitored value.

9.16.2.2 Variable Deadband

The Property Deadband represents the deadband value.

9.16.2.3 Variable ExceedingLimit

The Property ExceedingLimit represents the exceeding limit.

It is the LowLimit if

a) the new state is LOW_LIMIT, or

b) CurrentState is LOW_LIMIT and the new state is NORMAL

It is the HighLimit if

a) the new state is HIGH_LIMIT, or

b) CurrentState is HIGH_LIMIT and the new state is NORMAL

9.16.2.4 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.17 BACnetSignedOutOfRangeNotificationType

9.17.1 ObjectType definition

The BACnetSignedOutOfRangeNotificationType is formally defined in Table 88.

Table 88 – BACnetSignedOutOfRangeNotificationType Definition

Attribute		Value
BrowseName		BACnetSignedOutOfRangeNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ExceedingValue	0:Integer	0:PropertyType	M
0:HasProperty	Variable		Deadband	0:Integer	0:PropertyType	M
0:HasProperty	Variable		ExceedingLimit	0:Integer	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.17.2 ObjectType Description

9.17.2.1 Variable ExceedingValue

The Property ExceedingValue represents the monitored value.

9.17.2.2 Variable Deadband

The Property Deadband represents the deadband value.

9.17.2.3 Variable ExceedingLimit

The Property ExceedingLimit represents the exceeding limit.

It is the LowLimit if

a) the new state is LOW_LIMIT, or

b) CurrentState is LOW_LIMIT and the new state is NORMAL

It is the HighLimit if

a) the new state is HIGH_LIMIT, or

b) CurrentState is HIGH_LIMIT and the new state is NORMAL

9.17.2.4 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.18 BACnetUnsignedOutOfRangeNotificationType

9.18.1 ObjectType definition

The BACnetUnsignedOutOfRangeNotificationType is formally defined in Table 89.

Table 89 – BACnetUnsignedOutOfRangeNotificationType Definition

Attribute	Value
BrowseName	BACnetUnsignedOutOfRangeNotificationType
IsAbstract	False
References		NodeClass	BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty		Variable	ExceedingValue	0:UInteger	0:PropertyType	M
0:HasProperty		Variable	Deadband	0:UInteger	0:PropertyType	M
0:HasProperty		Variable	ExceedingLimit	0:UInteger	0:PropertyType	M
0:HasProperty		Variable	StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.18.2 ObjectType Description

9.18.2.1 Variable ExceedingValue

The Property ExceedingValue represents the monitored value.

9.18.2.2 Variable Deadband

The Property Deadband represents the deadband value.

9.18.2.3 Variable ExceedingLimit

The Property ExceedingLimit represents the exceeding limit.

It is the LowLimit if

a) the new state is LOW_LIMIT, or

b) CurrentState is LOW_LIMIT and the new state is NORMAL

It is the HighLimit if

a) the new state is HIGH_LIMIT, or

b) CurrentState is HIGH_LIMIT and the new state is NORMAL

9.18.2.4 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.

9.19 BACnetChangeOfCharacterStringNotificationType

9.19.1 ObjectType definition

The BACnetChangeOfCharacterStringNotificationType is formally defined in Table 90.

Table 90 – BACnetChangeOfCharacterStringNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfCharacterStringNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ChangedValue	0:String	0:PropertyType	M
0:HasProperty	Variable		AlarmValue	0:String	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

9.19.2 ObjectType Description

9.19.2.1 Variable ChangedValue

The Property ChangedValue represents the monitored value.

9.19.2.2 Variable AlarmValue

The Property AlarmValue conveys the character string of pAlarmValues related to the event state transition reported:

(a) for transitions to OFFNORMAL, the character string of pAlarmValues that matches pMonitoredValue,

(b) for transitions to NORMAL, the character string of pAlarmValues that match pMonitoredValue at the time of the most recent transition to OFFNORMAL.

9.19.2.3 Variable StatusFlags

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.