IEC 62541-9:2020
(Main)OPC Unified Architecture - Part 9: Alarms and Conditions
OPC Unified Architecture - Part 9: Alarms and Conditions
IEC 62541-9:2020 specifies the representation of Alarms and Conditions in the OPC Unified Architecture. Included is the Information Model representation of Alarms and Conditions in the OPC UA address space. Other aspects of alarm systems such as alarm philosophy, life cycle, alarm response times, alarm types and many other details are captured in documents such as IEC 62682 and ISA 18.2. The Alarms and Conditions Information Model in this specification is designed in accordance with IEC 62682 and ISA 18.2.
This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) added optional engineering units to the definition of RateOfChange alarms;
b) to fulfill the IEC 62682 model, the following elements have been added:
- AlarmConditionType States: Suppression, Silence, OutOfService, Latched;
- AlarmConditionType Properties: OnDelay, OffDelay, FirstInGroup, ReAlarmTime;
- New alarm types: DiscrepencyAlarm, DeviationAlarm, InstrumentDiagnosticAlarm, SystemDiagnosticAlarm.
c) added Annex that specifies how the concepts of this OPC UA part maps to IEC 62682 and ISA 18.2;
d) added new ConditionClasses: Safety, HighlyManaged, Statistical, Testing, Training;
e) added CertificateExpiration AlarmType;
f) added Alarm Metrics model.
Architecture unifiée OPC - Partie 9: Alarmes et Conditions
L'IEC 62541-9:2020 spécifie la représentation des Alarmes et des Conditions dans l'Architecture unifiée OPC. Il comprend la représentation par le Modèle d'information des Alarmes et des Conditions dans l'espace d'adressage OPC UA. Les autres aspects des systèmes d'alarme tels que la philosophie d'alarme, le cycle de vie, le temps de réponse de l'alarme, les types d'alarmes et de nombreux autres détails figurent dans des documents tels que l'IEC 62682 et l'ISA 18.2. Le Modèle d'information sur les Alarmes et les Conditions de la présente spécification est conçu conformément à l'IEC 62682 et à l'ISA 18.2. Cette troisième édition annule et remplace la deuxième édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) des unités techniques facultatives ont été ajoutées à la définition des alarmes RateOfChange;
b) afin de respecter le modèle IEC 62682, les éléments suivants ont été ajoutés:
- états d'AlarmConditionType: Suppression, Silence, OutOfService, Latched;
- Propriétés d'AlarmConditionType: OnDelay, OffDelay, FirstInGroup, ReAlarmTime;
- nouveaux types d'alarmes: DiscrepencyAlarm, DeviationAlarm, InstrumentDiagnosticAlarm, SystemDiagnosticAlarm;
c) ajout d'une annexe qui spécifie la manière dont les concepts de cette partie d'OPC UA assurent la correspondance avec l'IEC 62682 et l'ISA 18.2;
d) nouvelles ConditionClasses ajoutées: Safety, HighlyManaged, Statistical, Testing, Training;
e) ajout de l'AlarmType CertificateExpiration;
f) ajout d'un modèle de Mesures d'Alarme.
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IEC 62541-9 ®
Edition 3.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
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inside
OPC unified architecture –
Part 9: Alarms and Conditions
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REDLINE VERSION
INTERNATIONAL
STANDARD
colour
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OPC unified architecture –
Part 9: Alarms and Conditions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-8554-1
– 2 – IEC 62541-9:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 10
1 Scope . 13
2 Normative references . 13
3 Terms, definitions, abbreviated terms and data types used . 13
3.1 Terms and definitions . 13
3.2 Abbreviated terms . 16
3.3 Data types used . 16
4 Concepts . 16
4.1 General . 16
4.2 Conditions . 17
4.3 Acknowledgeable Conditions . 18
4.4 Previous states of Conditions . 20
4.5 Condition state synchronization . 20
4.6 Severity, quality, and comment . 21
4.7 Dialogs . 21
4.8 Alarms . 21
4.9 Multiple active states . 23
4.10 Condition instances in the AddressSpace . 24
4.11 Alarm and Condition auditing . 25
5 Model . 25
5.1 General . 25
5.2 Two-state state machines . 26
5.3 ConditionVariable . 28
5.4 Substate ReferenceTypes . 28
5.4.1 General . 28
5.4.2 HasTrueSubState ReferenceType . 28
5.4.3 HasFalseSubState ReferenceType . 29
5.4.4 HasAlarmSuppressionGroup ReferenceType . 29
5.4.5 AlarmGroupMember ReferenceType . 30
5.5 Condition Model . 30
5.5.1 General . 30
5.5.2 ConditionType . 31
5.5.3 Condition and branch instances . 35
5.5.4 Disable Method . 35
5.5.5 Enable Method . 36
5.5.6 AddComment Method . 36
5.5.7 ConditionRefresh Method . 38
5.5.8 ConditionRefresh2 Method . 39
5.6 Dialog Model . 41
5.6.1 General . 41
5.6.2 DialogConditionType . 41
5.6.3 Respond Method . 43
5.7 Acknowledgeable Condition Model . 44
5.7.1 General . 44
5.7.2 AcknowledgeableConditionType . 44
5.7.3 Acknowledge Method . 45
5.7.4 Confirm Method . 46
5.8 Alarm model. 48
5.8.1 General . 48
5.8.2 AlarmConditionType . 48
5.8.3 AlarmGroupType . 53
5.8.4 Reset Method . 53
5.8.5 Silence Method . 54
5.8.6 Suppress Method . 55
5.8.7 Unsuppress Method . 56
5.8.8 RemoveFromService Method . 57
5.8.9 PlaceInService Method . 57
5.8.10 ShelvedStateMachineType . 58
5.8.11 LimitAlarmType . 63
5.8.12 Exclusive limit types . 65
5.8.13 NonExclusiveLimitAlarmType . 68
5.8.14 Level Alarm . 69
5.8.15 Deviation Alarm . 70
5.8.16 Rate of change Alarms . 71
5.8.17 Discrete Alarms . 73
5.8.18 DiscrepancyAlarmType . 76
5.9 ConditionClasses . 77
5.9.1 Overview . 77
5.9.2 BaseConditionClassType . 77
5.9.3 ProcessConditionClassType . 78
5.9.4 MaintenanceConditionClassType . 78
5.9.5 SystemConditionClassType . 78
5.9.6 SafetyConditionClassType . 79
5.9.7 HighlyManagedAlarmConditionClassType . 79
5.9.8 TrainingConditionClassType . 79
5.9.9 StatisticalConditionClassType. 80
5.9.10 TestingConditionSubClassType . 80
5.10 Audit Events . 80
5.10.1 Overview . 80
5.10.2 AuditConditionEventType. 81
5.10.3 AuditConditionEnableEventType . 82
5.10.4 AuditConditionCommentEventType . 82
5.10.5 AuditConditionRespondEventType . 82
5.10.6 AuditConditionAcknowledgeEventType . 83
5.10.7 AuditConditionConfirmEventType . 83
5.10.8 AuditConditionShelvingEventType . 84
5.10.9 AuditConditionSuppressionEventType . 84
5.10.10 AuditConditionSilenceEventType . 84
5.10.11 AuditConditionResetEventType . 85
5.10.12 AuditConditionOutOfServiceEventType . 85
5.11 Condition Refresh related Events . 85
5.11.1 Overview . 85
5.11.2 RefreshStartEventType . 86
5.11.3 RefreshEndEventType . 86
5.11.4 RefreshRequiredEventType . 86
– 4 – IEC 62541-9:2020 RLV © IEC 2020
5.12 HasCondition Reference type . 87
5.13 Alarm and Condition status codes . 87
5.14 Expected A&C server behaviours . 88
5.14.1 General . 88
5.14.2 Communication problems . 88
5.14.3 Redundant A&C servers . 88
6 AddressSpace organisation . 89
6.1 General . 89
6.2 EventNotifier and source hierarchy . 89
6.3 Adding Conditions to the hierarchy. 90
6.4 Conditions in InstanceDeclarations . 90
6.5 Conditions in a VariableType . 91
7 System State and alarms . 91
7.1 Overview. 91
7.2 HasEffectDisable . 92
7.3 HasEffectEnable . 92
7.4 HasEffectSuppress . 93
7.5 HasEffectUnsuppressed . 93
8 Alarm metrics . 94
8.1 Overview. 94
8.2 AlarmMetricsType . 94
8.3 AlarmRateVariableType . 95
8.4 Reset Method . 96
Annex A (informative) Recommended localized names . 97
A.1 Recommended state names for TwoState variables . 97
A.1.1 LocaleId "en" . 97
A.1.2 LocaleId "de" . 97
A.1.3 LocaleId "fr" . 98
A.2 Recommended dialog response options . 99
Annex B (informative) Examples . 100
B.1 Examples for Event sequences from Condition instances . 100
B.1.1 Overview . 100
B.1.2 Server maintains current state only . 100
B.1.3 Server maintains previous states . 101
B.2 AddressSpace examples . 102
Annex C (informative) Mapping to EEMUA . 105
Annex D (informative) Mapping from OPC A&E to OPC UA A&C . 106
D.1 Overview. 106
D.2 Alarms and Events COM UA wrapper . 106
D.2.1 Event Areas . 106
D.2.2 Event sources . 107
D.2.3 Event categories . 107
D.2.4 Event attributes . 108
D.2.5 Event subscriptions . 108
D.2.6 Condition instances . 110
D.2.7 Condition Refresh . 111
D.3 Alarms and Events COM UA proxy . 111
D.3.1 General . 111
D.3.2 Server status mapping . 111
D.3.3 Event Type mapping . 111
D.3.4 Event category mapping . 112
D.3.5 Event Category attribute mapping . 113
D.3.6 Event Condition mapping . 116
D.3.7 Browse mapping . 116
D.3.8 Qualified names . 117
D.3.9 Subscription filters . 118
Annex E (informative) IEC 62682 Mapping . 120
E.1 Overview. 120
E.2 Terms . 120
E.3 Alarm records and State indications . 126
Annex F (informative) System State . 127
F.1 Overview. 127
F.2 SystemStateStateMachineType . 128
Bibliography . 132
Figure 1 – Base Condition state model . 18
Figure 2 – AcknowledgeableConditions state model . 18
Figure 3 – Acknowledge state model . 19
Figure 4 – Confirmed Acknowledge state model . 19
Figure 5 – Alarm state machine model . 22
Figure 6 – Typical Alarm Timeline example . 23
Figure 7 – Multiple active states example . 24
Figure 8 – ConditionType hierarchy . 26
Figure 9 – Condition model . 31
Figure 10 – DialogConditionType overview . 42
Figure 11 – AcknowledgeableConditionType overview . 44
Figure 12 – AlarmConditionType Hierarchy Model . 48
Figure 13 – Alarm Model . 49
Figure 14 – Shelve state transitions . 59
Figure 15 – Shelved State Machine ShelvedStateMachineType model . 59
Figure 16 – LimitAlarmType . 64
Figure 17 – ExclusiveLimitStateMachine ExclusiveLimitStateMachineType . 65
Figure 18 – ExclusiveLimitAlarmType . 67
Figure 19 – NonExclusiveLimitAlarmType . 68
Figure 20 – DiscreteAlarmType Hierarchy . 73
Figure 21 – ConditionClass type hierarchy . 77
Figure 22 – AuditEvent hierarchy . 81
Figure 23 – Refresh Related Event Hierarchy . 86
Figure 24 – Typical Event HasNotifier Hierarchy . 89
Figure 25 – Use of HasCondition in an Event a HasNotifier hierarchy . 90
Figure 26 – Use of HasCondition in an InstanceDeclaration . 91
Figure 27 – Use of HasCondition in a VariableType . 91
Figure B.1 – Single state example. 100
– 6 – IEC 62541-9:2020 RLV © IEC 2020
Figure B.2 – Previous state example . 101
Figure B.3 – HasCondition used with Condition instances . 103
Figure B.4 – HasCondition reference to a Condition type . 104
Figure B.5 – HasCondition used with an instance declaration . 104
Figure D.1 – The type model of a wrapped COM A&E server . 108
Figure D.2 – Mapping UA Event Types to COM A&E Event Types . 112
Figure D.3 – Example mapping of UA Event Types to COM A&E categories . 113
Figure D.4 – Example mapping of UA Event Types to A&E categories with attributes . 116
Figure F.1 – SystemState transitions . 128
Figure F.2 – SystemStateStateMachineType Model . 129
Table 1 – Parameter types defined in IEC 62541-3 . 16
Table 2 – Parameter types defined in IEC 62541-4 . 16
Table 3 – TwoStateVariableType definition . 27
Table 4 – ConditionVariableType definition . 28
Table 5 – HasTrueSubState ReferenceType . 29
Table 6 – HasFalseSubState ReferenceType . 29
Table 7 – HasAlarmSuppressionGroup ReferenceType . 30
Table 8 – AlarmGroupMember ReferenceType . 30
Table 9 – ConditionType definition . 32
Table 10 – SimpleAttributeOperand . 35
Table 11 – Disable result codes . 35
Table 12 – Disable Method AddressSpace definition . 36
Table 13 – Enable result codes . 36
Table 14 – Enable Method AddressSpace definition . 36
Table 15 – AddComment arguments . 37
Table 16 – AddComment result codes . 37
Table 17 – AddComment Method AddressSpace definition . 38
Table 18 – ConditionRefresh parameters . 38
Table 19 – ConditionRefresh ReturnCodes result codes . 38
Table 20 – ConditionRefresh Method AddressSpace definition. 39
Table 21 – ConditionRefresh2 parameters . 40
Table 22 – ConditionRefresh2 result codes . 40
Table 23 – ConditionRefresh2 Method AddressSpace definition . 41
Table 24 – DialogConditionType definition . 42
Table 25 – Respond parameters . 43
Table 26 – Respond Result Codes . 43
Table 27 – Respond Method AddressSpace definition . 44
Table 28 – AcknowledgeableConditionType definition . 45
Table 29 – Acknowledge parameters . 46
Table 30 – Acknowledge result codes . 46
Table 31 – Acknowledge Method AddressSpace definition . 46
Table 32 – Confirm Method parameters . 47
Table 33 – Confirm result codes . 47
Table 34 – Confirm Method AddressSpace definition . 48
Table 35 – AlarmConditionType definition . 50
Table 36 – AlarmGroupType definition . 53
Table 37 – Silence result codes . 54
Table 38 – Reset Method AddressSpace definition . 54
Table 39 – Silence result codes . 54
Table 40 – Silence Method AddressSpace definition . 55
Table 41 – Suppress result codes . 55
Table 42 – Suppress Method AddressSpace definition . 56
Table 43 – Unsuppress result codes . 56
Table 44 – Unsuppress Method AddressSpace definition . 56
Table 45 – RemoveFromService result codes . 57
Table 46 – RemoveFromService Method AddressSpace definition . 57
Table 47 – PlaceInService result codes . 58
Table 48 – PlaceInService Method AddressSpace definition . 58
Table 49 – ShelvedStateMachine ShelvedStateMachineType definition . 60
Table 50 – ShelvedStateMachine ShelvedStateMachineType transitions . 61
Table 51 – Unshelve result codes . 61
Table 52 – Unshelve Method AddressSpace definition . 62
Table 53 – TimedShelve parameters . 62
Table 54 – TimedShelve result codes . 62
Table 55 – TimedShelve Method AddressSpace definition . 63
Table 56 – OneShotShelve result codes . 63
Table 57 – OneShotShelve Method AddressSpace definition . 63
Table 58 – LimitAlarmType definition . 64
Table 59 – ExclusiveLimitStateMachineType definition . 66
Table 60 – ExclusiveLimitStateMachineType transitions . 66
Table 61 – ExclusiveLimitAlarmType definition . 67
Table 62 – NonExclusiveLimitAlarmType definition . 69
Table 63 – NonExclusiveLevelAlarmType definition . 69
Table 64 – ExclusiveLevelAlarmType definition . 70
Table 65 – NonExclusiveDeviationAlarmType definition . 71
Table 66 – ExclusiveDeviationAlarmType definition . 71
Table 67 – NonExclusiveRateOfChangeAlarmType definition . 72
Table 68 – ExclusiveRateOfChangeAlarmType definition . 72
Table 69 – DiscreteAlarmType definition . 73
Table 70 – OffNormalAlarmType Definition . 74
Table 71 – SystemOffNormalAlarmType definition . 74
Table 72 – TripAlarmType definition . 74
Table 73 – InstrumentDiagnosticAlarmType definition . 75
Table 74 – SystemDiagnosticAlarmType definition . 75
Table 75 – CertificateExpirationAlarmType definition . 76
– 8 – IEC 62541-9:2020 RLV © IEC 2020
Table 76 – DiscrepancyAlarmType definition . 76
Table 77 – BaseConditionClassType definition . 77
Table 78 – ProcessConditionClassType definition . 78
Table 79 – MaintenanceConditionClassType definition . 78
Table 80 – SystemConditionClassType definition . 78
Table 81 – SafetyConditionClassType definition . 79
Table 82 – HighlyManagedAlarmConditionClassType definition . 79
Table 83 – TrainingConditionClassType definition . 79
Table 84 – StatisticalConditionClassType definition . 80
Table 85 – TestingConditionSubClassType definition . 80
Table 86 – AuditConditionEventType definition . 81
Table 87 – AuditConditionEnableEventType definition . 82
Table 88 – AuditConditionCommentEventType definition . 82
Table 89 – AuditConditionRespondEventType definition . 83
Table 90 – AuditConditionAcknowledgeEventType definition . 83
Table 91 – AuditConditionConfirmEventType definition . 83
Table 92 – AuditConditionShelvingEventType definition . 84
Table 93 – AuditConditionSuppressionEventType definition . 84
Table 94 – AuditConditionSilenceEventType definition . 84
Table 95 – AuditConditionResetEventType definition . 85
Table 96 – AuditConditionOutOfServiceEventType definition . 85
Table 97 – RefreshStartEventType definition . 86
Table 98 – RefreshEndEventType definition . 86
Table 99 – RefreshRequiredEventType definition . 87
Table 100 – HasCondition ReferenceType . 87
Table 101 – Alarm & Condition result codes . 88
Table 102 – HasEffectDisable ReferenceType . 92
Table 103 – HasEffectEnable ReferenceType . 93
Table 104 – HasEffectSuppress ReferenceType . 93
Table 105 – HasEffectUnsuppress ReferenceType . 94
Table 106 – AlarmMetricsType Definition . 95
Table 107 – AlarmRateVariableType definition . 96
Table 108 – Suppress result codes . 96
Table 109 – Reset Method AddressSpace definition . 96
Table A.1 – Recommended state names for LocaleId "en" . 97
Table A.2 – Recommended display names for LocaleId "en" . 97
Table A.3 – Recommended state names for LocaleId "de" . 98
Table A.4 – Recommended display names for LocaleId "de" . 98
Table A.5 – Recommended state names for LocaleId "fr" . 99
Table A.6 – Recommended display names for LocaleId "fr" . 99
Table A.7 – Recommended dialog response options . 99
Table B.1 – Example of a Condition that only keeps the latest state . 100
Table B.2 – Example of a Condition that maintains previous states via branches . 102
Table C.1 – EEMUA Terms . 105
Table D.1 – Mapping from standard Event categories to OPC UA Event types . 107
Table D.2 – Mapping from ONEVENTSTRUCT fields to UA BaseEventType Variables . 109
Table D.3 – Mapping from ONEVENTSTRUCT fields to UA AuditEventType Variables . 109
Table D.4 – Mapping from ONEVENTSTRUCT fields to UA AlarmType Variables . 110
Table D.5 – Event category attribute mapping table . 114
Table E.1 – IEC 62682 Mapping. 120
Table F.1 – SystemStateStateMachineType definition . 130
Table F.2 – SystemStateStateMachineType transitions . 131
– 10 – IEC 62541-9:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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OPC UNIFIED ARCHITECTURE –
Part 9: Alarms and Conditions
FOREWORD
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Edition 3.0 2020-06
INTERNATIONAL
STANDARD
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INTERNATIONALE
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OPC unified architecture –
Part 9: Alarms and Conditions
Architecture unifiée OPC –
Partie 9: Alarmes et Conditions
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International Standards for all electrical, electronic and related technologies.
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and withdrawn publications. Also known as the International Electrotechnical Vocabulary
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IEC 62541-9 ®
Edition 3.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 9: Alarms and Conditions
Architecture unifiée OPC –
Partie 9: Alarmes et Conditions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-8465-0
– 2 – IEC 62541-9:2020 © IEC 2020
CONTENTS
FOREWORD . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, abbreviated terms and data types used . 12
3.1 Terms and definitions . 12
3.2 Abbreviated terms . 15
3.3 Data types used . 15
4 Concepts . 15
4.1 General . 15
4.2 Conditions . 15
4.3 Acknowledgeable Conditions . 17
4.4 Previous states of Conditions . 18
4.5 Condition state synchronization . 19
4.6 Severity, quality, and comment . 19
4.7 Dialogs . 20
4.8 Alarms . 20
4.9 Multiple active states . 22
4.10 Condition instances in the AddressSpace . 23
4.11 Alarm and Condition auditing . 24
5 Model . 24
5.1 General . 24
5.2 Two-state state machines . 25
5.3 ConditionVariable . 27
5.4 ReferenceTypes . 27
5.4.1 General . 27
5.4.2 HasTrueSubState ReferenceType . 27
5.4.3 HasFalseSubState ReferenceType . 28
5.4.4 HasAlarmSuppressionGroup ReferenceType . 28
5.4.5 AlarmGroupMember ReferenceType . 29
5.5 Condition Model . 29
5.5.1 General . 29
5.5.2 ConditionType . 30
5.5.3 Condition and branch instances . 34
5.5.4 Disable Method . 34
5.5.5 Enable Method . 35
5.5.6 AddComment Method . 35
5.5.7 ConditionRefresh Method . 36
5.5.8 ConditionRefresh2 Method . 38
5.6 Dialog Model . 40
5.6.1 General . 40
5.6.2 DialogConditionType . 40
5.6.3 Respond Method . 42
5.7 Acknowledgeable Condition Model . 42
5.7.1 General . 42
5.7.2 AcknowledgeableConditionType . 43
5.7.3 Acknowledge Method . 44
5.7.4 Confirm Method . 45
5.8 Alarm model. 46
5.8.1 General . 46
5.8.2 AlarmConditionType . 47
5.8.3 AlarmGroupType . 52
5.8.4 Reset Method . 52
5.8.5 Silence Method . 53
5.8.6 Suppress Method . 54
5.8.7 Unsuppress Method . 55
5.8.8 RemoveFromService Method . 56
5.8.9 PlaceInService Method . 56
5.8.10 ShelvedStateMachineType . 57
5.8.11 LimitAlarmType . 62
5.8.12 Exclusive limit types . 64
5.8.13 NonExclusiveLimitAlarmType . 67
5.8.14 Level Alarm . 68
5.8.15 Deviation Alarm . 69
5.8.16 Rate of change Alarms . 70
5.8.17 Discrete Alarms . 71
5.8.18 DiscrepancyAlarmType . 75
5.9 ConditionClasses . 75
5.9.1 Overview . 75
5.9.2 BaseConditionClassType . 76
5.9.3 ProcessConditionClassType . 76
5.9.4 MaintenanceConditionClassType . 77
5.9.5 SystemConditionClassType . 77
5.9.6 SafetyConditionClassType . 77
5.9.7 HighlyManagedAlarmConditionClassType . 78
5.9.8 TrainingConditionClassType . 78
5.9.9 StatisticalConditionClassType. 78
5.9.10 TestingConditionSubClassType . 79
5.10 Audit Events . 79
5.10.1 Overview . 79
5.10.2 AuditConditionEventType. 80
5.10.3 AuditConditionEnableEventType . 80
5.10.4 AuditConditionCommentEventType . 80
5.10.5 AuditConditionRespondEventType . 81
5.10.6 AuditConditionAcknowledgeEventType . 81
5.10.7 AuditConditionConfirmEventType . 82
5.10.8 AuditConditionShelvingEventType . 82
5.10.9 AuditConditionSuppressionEventType . 82
5.10.10 AuditConditionSilenceEventType . 83
5.10.11 AuditConditionResetEventType . 83
5.10.12 AuditConditionOutOfServiceEventType . 83
5.11 Condition Refresh related Events . 84
5.11.1 Overview . 84
5.11.2 RefreshStartEventType . 84
5.11.3 RefreshEndEventType . 84
5.11.4 RefreshRequiredEventType . 85
– 4 – IEC 62541-9:2020 © IEC 2020
5.12 HasCondition Reference type . 85
5.13 Alarm and Condition status codes . 86
5.14 Expected A&C server behaviours . 86
5.14.1 General . 86
5.14.2 Communication problems . 86
5.14.3 Redundant A&C servers . 87
6 AddressSpace organisation . 87
6.1 General . 87
6.2 EventNotifier and source hierarchy . 87
6.3 Adding Conditions to the hierarchy. 88
6.4 Conditions in InstanceDeclarations . 89
6.5 Conditions in a VariableType . 90
7 System State and alarms . 90
7.1 Overview. 90
7.2 HasEffectDisable . 90
7.3 HasEffectEnable . 91
7.4 HasEffectSuppress . 91
7.5 HasEffectUnsuppressed . 92
8 Alarm metrics . 93
8.1 Overview. 93
8.2 AlarmMetricsType . 93
8.3 AlarmRateVariableType . 94
8.4 Reset Method . 94
Annex A (informative) Recommended localized names . 96
A.1 Recommended state names for TwoState variables . 96
A.1.1 LocaleId "en" . 96
A.1.2 LocaleId "de" . 96
A.1.3 LocaleId "fr" . 97
A.2 Recommended dialog response options . 98
Annex B (informative) Examples . 99
B.1 Examples for Event sequences from Condition instances . 99
B.1.1 Overview . 99
B.1.2 Server maintains current state only . 99
B.1.3 Server maintains previous states . 100
B.2 AddressSpace examples . 101
Annex C (informative) Mapping to EEMUA . 104
Annex D (informative) Mapping from OPC A&E to OPC UA A&C . 105
D.1 Overview. 105
D.2 Alarms and Events COM UA wrapper . 105
D.2.1 Event Areas . 105
D.2.2 Event sources . 106
D.2.3 Event categories . 106
D.2.4 Event attributes . 107
D.2.5 Event subscriptions . 107
D.2.6 Condition instances . 109
D.2.7 Condition Refresh . 110
D.3 Alarms and Events COM UA proxy . 110
D.3.1 General . 110
D.3.2 Server status mapping . 110
D.3.3 Event Type mapping . 110
D.3.4 Event category mapping . 111
D.3.5 Event Category attribute mapping . 112
D.3.6 Event Condition mapping . 115
D.3.7 Browse mapping . 115
D.3.8 Qualified names . 116
D.3.9 Subscription filters . 117
Annex E (informative) IEC 62682 Mapping . 119
E.1 Overview. 119
E.2 Terms . 119
E.3 Alarm records and State indications . 125
Annex F (informative) System State . 126
F.1 Overview. 126
F.2 SystemStateStateMachineType . 127
Bibliography . 131
Figure 1 – Base Condition state model . 16
Figure 2 – AcknowledgeableConditions state model . 17
Figure 3 – Acknowledge state model . 18
Figure 4 – Confirmed Acknowledge state model . 18
Figure 5 – Alarm state machine model . 21
Figure 6 – Typical Alarm Timeline example . 22
Figure 7 – Multiple active states example . 23
Figure 8 – ConditionType hierarchy . 25
Figure 9 – Condition model . 30
Figure 10 – DialogConditionType overview . 40
Figure 11 – AcknowledgeableConditionType overview . 43
Figure 12 – AlarmConditionType Hierarchy Model . 47
Figure 13 – Alarm Model . 48
Figure 14 – Shelve state transitions . 58
Figure 15 – ShelvedStateMachineType model . 58
Figure 16 – LimitAlarmType . 63
Figure 17 – ExclusiveLimitStateMachineType . 64
Figure 18 – ExclusiveLimitAlarmType . 66
Figure 19 – NonExclusiveLimitAlarmType . 67
Figure 20 – DiscreteAlarmType Hierarchy . 72
Figure 21 – ConditionClass type hierarchy . 76
Figure 22 – AuditEvent hierarchy . 79
Figure 23 – Refresh Related Event Hierarchy . 84
Figure 24 – Typical HasNotifier Hierarchy . 88
Figure 25 – Use of HasCondition in a HasNotifier hierarchy . 89
Figure 26 – Use of HasCondition in an InstanceDeclaration . 89
Figure 27 – Use of HasCondition in a VariableType . 90
Figure B.1 – Single state example. 99
– 6 – IEC 62541-9:2020 © IEC 2020
Figure B.2 – Previous state example . 100
Figure B.3 – HasCondition used with Condition instances . 102
Figure B.4 – HasCondition reference to a Condition type . 103
Figure B.5 – HasCondition used with an instance declaration . 103
Figure D.1 – The type model of a wrapped COM A&E server . 107
Figure D.2 – Mapping UA Event Types to COM A&E Event Types . 111
Figure D.3 – Example mapping of UA Event Types to COM A&E categories . 112
Figure D.4 – Example mapping of UA Event Types to A&E categories with attributes . 115
Figure F.1 – SystemState transitions . 127
Figure F.2 – SystemStateStateMachineType Model . 128
Table 1 – Parameter types defined in IEC 62541-3 . 15
Table 2 – Parameter types defined in IEC 62541-4 . 15
Table 3 – TwoStateVariableType definition . 26
Table 4 – ConditionVariableType definition . 27
Table 5 – HasTrueSubState ReferenceType . 28
Table 6 – HasFalseSubState ReferenceType . 28
Table 7 – HasAlarmSuppressionGroup ReferenceType . 29
Table 8 – AlarmGroupMember ReferenceType . 29
Table 9 – ConditionType definition . 31
Table 10 – SimpleAttributeOperand . 34
Table 11 – Disable result codes . 34
Table 12 – Disable Method AddressSpace definition . 35
Table 13 – Enable result codes . 35
Table 14 – Enable Method AddressSpace definition . 35
Table 15 – AddComment arguments . 36
Table 16 – AddComment result codes . 36
Table 17 – AddComment Method AddressSpace definition . 36
Table 18 – ConditionRefresh parameters . 37
Table 19 – ConditionRefresh result codes . 37
Table 20 – ConditionRefresh Method AddressSpace definition. 38
Table 21 – ConditionRefresh2 parameters . 38
Table 22 – ConditionRefresh2 result codes . 39
Table 23 – ConditionRefresh2 Method AddressSpace definition . 40
Table 24 – DialogConditionType definition . 41
Table 25 – Respond parameters . 42
Table 26 – Respond Result Codes . 42
Table 27 – Respond Method AddressSpace definition . 42
Table 28 – AcknowledgeableConditionType definition . 43
Table 29 – Acknowledge parameters . 44
Table 30 – Acknowledge result codes . 44
Table 31 – Acknowledge Method AddressSpace definition . 45
Table 32 – Confirm Method parameters . 45
Table 33 – Confirm result codes . 45
Table 34 – Confirm Method AddressSpace definition . 46
Table 35 – AlarmConditionType definition . 49
Table 36 – AlarmGroupType definition . 52
Table 37 – Silence result codes . 53
Table 38 – Reset Method AddressSpace definition . 53
Table 39 – Silence result codes . 53
Table 40 – Silence Method AddressSpace definition . 54
Table 41 – Suppress result codes . 54
Table 42 – Suppress Method AddressSpace definition . 55
Table 43 – Unsuppress result codes . 55
Table 44 – Unsuppress Method AddressSpace definition . 55
Table 45 – RemoveFromService result codes . 56
Table 46 – RemoveFromService Method AddressSpace definition . 56
Table 47 – PlaceInService result codes . 57
Table 48 – PlaceInService Method AddressSpace definition . 57
Table 49 –ShelvedStateMachineType definition . 59
Table 50 – ShelvedStateMachineType transitions . 60
Table 51 – Unshelve result codes . 60
Table 52 – Unshelve Method AddressSpace definition . 61
Table 53 – TimedShelve parameters . 61
Table 54 – TimedShelve result codes . 61
Table 55 – TimedShelve Method AddressSpace definition . 62
Table 56 – OneShotShelve result codes . 62
Table 57 – OneShotShelve Method AddressSpace definition . 62
Table 58 – LimitAlarmType definition . 63
Table 59 – ExclusiveLimitStateMachineType definition . 65
Table 60 – ExclusiveLimitStateMachineType transitions . 65
Table 61 – ExclusiveLimitAlarmType definition . 66
Table 62 – NonExclusiveLimitAlarmType definition . 68
Table 63 – NonExclusiveLevelAlarmType definition . 68
Table 64 – ExclusiveLevelAlarmType definition . 69
Table 65 – NonExclusiveDeviationAlarmType definition . 69
Table 66 – ExclusiveDeviationAlarmType definition . 70
Table 67 – NonExclusiveRateOfChangeAlarmType definition . 71
Table 68 – ExclusiveRateOfChangeAlarmType definition . 71
Table 69 – DiscreteAlarmType definition . 72
Table 70 – OffNormalAlarmType Definition . 72
Table 71 – SystemOffNormalAlarmType definition . 73
Table 72 – TripAlarmType definition . 73
Table 73 – InstrumentDiagnosticAlarmType definition . 74
Table 74 – SystemDiagnosticAlarmType definition . 74
Table 75 – CertificateExpirationAlarmType definition . 74
– 8 – IEC 62541-9:2020 © IEC 2020
Table 76 – DiscrepancyAlarmType definition . 75
Table 77 – BaseConditionClassType definition . 76
Table 78 – ProcessConditionClassType definition . 76
Table 79 – MaintenanceConditionClassType definition . 77
Table 80 – SystemConditionClassType definition . 77
Table 81 – SafetyConditionClassType definition . 77
Table 82 – HighlyManagedAlarmConditionClassType definition . 78
Table 83 – TrainingConditionClassType definition . 78
Table 84 – StatisticalConditionClassType definition . 78
Table 85 – TestingConditionSubClassType definition . 79
Table 86 – AuditConditionEventType definition . 80
Table 87 – AuditConditionEnableEventType definition . 80
Table 88 – AuditConditionCommentEventType definition . 81
Table 89 – AuditConditionRespondEventType definition . 81
Table 90 – AuditConditionAcknowledgeEventType definition . 81
Table 91 – AuditConditionConfirmEventType definition . 82
Table 92 – AuditConditionShelvingEventType definition . 82
Table 93 – AuditConditionSuppressionEventType definition . 82
Table 94 – AuditConditionSilenceEventType definition . 83
Table 95 – AuditConditionResetEventType definition . 83
Table 96 – AuditConditionOutOfServiceEventType definition . 83
Table 97 – RefreshStartEventType definition . 84
Table 98 – RefreshEndEventType definition . 84
Table 99 – RefreshRequiredEventType definition . 85
Table 100 – HasCondition ReferenceType . 85
Table 101 – Alarm & Condition result codes . 86
Table 102 – HasEffectDisable ReferenceType . 91
Table 103 – HasEffectEnable ReferenceType . 91
Table 104 – HasEffectSuppress ReferenceType . 92
Table 105 – HasEffectUnsuppress ReferenceType . 92
Table 106 – AlarmMetricsType Definition . 93
Table 107 – AlarmRateVariableType definition . 94
Table 108 – Suppress result codes . 94
Table 109 – Reset Method AddressSpace definition . 95
Table A.1 – Recommended state names for LocaleId "en" . 96
Table A.2 – Recommended display names for LocaleId "en" . 96
Table A.3 – Recommended state names for LocaleId "de" . 97
Table A.4 – Recommended display names for LocaleId "de" . 97
Table A.5 – Recommended state names for LocaleId "fr" . 98
Table A.6 – Recommended display names for LocaleId "fr" . 98
Table A.7 – Recommended dialog response options . 98
Table B.1 – Example of a Condition that only keeps the latest state . 99
Table B.2 – Example of a Condition that maintains previous states via branches . 101
Table C.1 – EEMUA Terms . 104
Table D.1 – Mapping from standard Event categories to OPC UA Event types . 106
Table D.2 – Mapping from ONEVENTSTRUCT fields to UA BaseEventType Variables . 108
Table D.3 – Mapping from ONEVENTSTRUCT fields to UA AuditEventType Variables . 108
Table D.4 – Mapping from ONEVENTSTRUCT fields to UA AlarmType Variables . 109
Table D.5 – Event category attribute mapping table . 113
Table E.1 – IEC 62682 Mapping. 119
Table F.1 – SystemStateStateMachineType definition . 129
Table F.2 – SystemStateStateMachineType transitions . 130
– 10 – IEC 62541
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