OPC Unified Architecture - Part 9: Alarms and conditions (IEC 62541-9:2020)

This part of IEC 62541 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.

OPC Unified Architecture - Teil 9: Alarme und Zustände (IEC 62541-9:2020)

Architecture unifiée OPC - Partie 9: Alarmes et conditions (IEC 62541-9:2020)

IEC 62541-9:2020 est disponible sous forme de IEC 62541-9:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

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.

Enotna arhitektura OPC - 9. del: Alarmi in pogoji (IEC 62541-9:2020)

General Information

Status
Published
Public Enquiry End Date
09-Nov-2018
Publication Date
05-Nov-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Aug-2020
Due Date
29-Oct-2020
Completion Date
06-Nov-2020

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SLOVENSKI STANDARD
SIST EN IEC 62541-9:2020
01-december-2020
Nadomešča:
SIST EN 62541-9:2015
Enotna arhitektura OPC - 9. del: Alarmi in pogoji (IEC 62541-9:2020)
OPC Unified Architecture - Part 9: Alarms and conditions (IEC 62541-9:2020)
OPC Unified Architecture - Teil 9: Alarme und Zustände (IEC 62541-9:2020)
Architecture unifiée OPC - Partie 9: Alarmes et conditions (IEC 62541-9:2020)
Ta slovenski standard je istoveten z: EN IEC 62541-9:2020
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
SIST EN IEC 62541-9:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62541-9:2020

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SIST EN IEC 62541-9:2020


EUROPEAN STANDARD EN IEC 62541-9

NORME EUROPÉENNE

EUROPÄISCHE NORM
August 2020
ICS 35.100.05; 25.040.40 Supersedes EN 62541-9:2015 and all of its amendments
and corrigenda (if any)
English Version
OPC Unified Architecture - Part 9: Alarms and Conditions
(IEC 62541-9:2020)
Architecture unifiée OPC - Partie 9: Alarmes et Conditions OPC Unified Architecture - Teil 9: Alarme und Zustände
(IEC 62541-9:2020) (IEC 62541-9:2020)
This European Standard was approved by CENELEC on 2020-07-23. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62541-9:2020 E

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SIST EN IEC 62541-9:2020
EN IEC 62541-9:2020 (E)
European foreword
The text of document 65E/709/FDIS, future edition 3 of IEC 62541-9, prepared by SC 65E "Devices
and integration in enterprise systems" of IEC/TC 65 "Industrial-process measurement, control and
automation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 62541-9:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-04-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-07-23
document have to be withdrawn

This document supersedes EN 62541-9:2015 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 62541-9:2020 was approved by CENELEC as a European
Standard without any modification.


2

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SIST EN IEC 62541-9:2020
EN IEC 62541-9:2020 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC/TR 62541-1 - OPC unified architecture - Part 1: Overview CLC/TR 62541-1 -
and concepts
IEC 62541-3 - OPC Unified Architecture - Part 3: Address - -
Space Model
IEC 62541-4 - OPC Unified Architecture - Part 4: Services - -
IEC 62541-5 - OPC Unified Architecture - Part 5: - -
Information Model
IEC 62541-6 - OPC Unified Architecture - Part 6: Mappings - -
IEC 62541-7 - OPC unified architecture - Part 7: Profiles - -
IEC 62541-8 - OPC Unified Architecture - Part 8: Data - -
Access
IEC 62541-11 - OPC Unified Architecture - Part 11: - -
Historical Access
IEC 62682 - Management of alarms systems for the - -
process industries
EEMUA 191 - Alarm systems - A guide to design, - -
management and procurement


3

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SIST EN IEC 62541-9:2020




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




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 62541-9:2020
– 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

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IEC 62541-9:2020 © IEC 2020 – 3 –
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

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– 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

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IEC 62541-9:2020 © IEC 2020 – 5 –
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

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– 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 .
...

SLOVENSKI STANDARD
oSIST prEN IEC 62541-9:2018
01-november-2018
Enotna arhitektura OPC - 9. del: Alarmi in pogoji
OPC Unified Architecture - Part 9: Alarms and conditions
Architecture unifiée OPC - Partie 9: Alarmes et conditions
Ta slovenski standard je istoveten z: prEN IEC 62541-9:2018
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
oSIST prEN IEC 62541-9:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 62541-9:2018

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oSIST prEN IEC 62541-9:2018
65E/610/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62541-9 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2018-08-17 2018-11-09
SUPERSEDES DOCUMENTS:
65E/558/RR

IEC SC 65E : DEVICES AND INTEGRATION IN ENTERPRISE SYSTEMS
SECRETARIAT: SECRETARY:
United States of America Mr Donald (Bob) Lattimer
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:


Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:

EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.

TITLE:
OPC Unified Architecture - Part 9: Alarms and conditions

PROPOSED STABILITY DATE: 2021

NOTE FROM TC/SC OFFICERS:


Copyright © 2018 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

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oSIST prEN IEC 62541-9:2018
IEC CDV 62541-9 © IEC 2017 - 2 - 65E/610/CDV
CONTENTS
FIGURES . 5
TABLES . 6
FOREWORD . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, and abbreviations . 13
3.1 Terms and definitions . 13
3.2 Abbreviations and symbols . 14
3.3 Used data types . 15
4 Concepts . 15
4.1 General . 15
4.2 Conditions . 15
4.3 Acknowledgeable Conditions . 16
4.4 Previous states of Conditions . 18
4.5 Condition state synchronization . 18
4.6 Severity, quality, and comment . 19
4.7 Dialogs . 19
4.8 Alarms . 20
4.9 Multiple active states . 21
4.10 Condition instances in the AddressSpace . 22
4.11 Alarm and Condition auditing. 23
5 Model . 23
5.1 General . 23
5.2 Two-state state machines . 24
5.3 ConditionVariable . 25
5.4 ReferenceTypes . 25
5.4.1 General . 25
5.4.2 HasTrueSubState ReferenceType . 26
5.4.3 HasFalseSubState ReferenceType . 26
5.4.4 HasAlarmSuppressionGroup ReferenceType. 27
5.4.5 AlarmGroupMember ReferenceType . 27
5.5 Condition Model . 27
5.5.1 General . 27
5.5.2 ConditionType . 28
5.5.3 Condition and branch instances . 31
5.5.4 Disable Method . 32
5.5.5 Enable Method . 32
5.5.6 AddComment Method . 33
5.5.7 ConditionRefresh Method . 33
5.5.8 ConditionRefresh2 Method . 35
5.6 Dialog Model . 37
5.6.1 General . 37
5.6.2 DialogConditionType . 37
5.6.3 Respond Method . 38
5.7 Acknowledgeable Condition Model . 39
5.7.1 General . 39

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oSIST prEN IEC 62541-9:2018
65E/610/CDV- - 3 - IEC CDV 62541-9 © IEC 2017

5.7.2 AcknowledgeableConditionType . 39
5.7.3 Acknowledge Method . 40
5.7.4 Confirm Method . 41
5.8 Alarm model . 42
5.8.1 General . 42
5.8.2 AlarmConditionType . 42
5.8.3 AlarmGroupType . 46
5.8.4 Reset Method. 47
5.8.5 Silence Method . 47
5.8.6 Suppress Method . 48
5.8.7 Unsuppress Method . 49
5.8.8 RemoveFromService Method . 49
5.8.9 PlaceInService Method . 50
5.8.10 ShelvedStateMachineType . 51
5.8.11 LimitAlarmType . 55
5.8.12 Exclusive Limit Types. 56
5.8.13 NonExclusiveLimitAlarmType . 59
5.8.14 Level Alarm . 60
5.8.15 Deviation Alarm . 61
5.8.16 Rate of change Alarms . 62
5.8.17 Discrete Alarms . 63
5.8.18 DiscrepancyAlarmType . 65
5.9 ConditionClasses . 66
5.9.1 Overview . 66
5.9.2 BaseConditionClassType . 67
5.9.3 ProcessConditionClassType . 67
5.9.4 MaintenanceConditionClassType . 67
5.9.5 SystemConditionClassType . 67
5.9.6 SafetyConditionClassType . 68
5.9.7 HighlyManagedAlarmConditionClassType . 68
5.9.8 TrainingConditionClassType . 68
5.9.9 StatisticalConditionClassType . 69
5.9.10 TestingConditionSubClassType. 69
5.10 Audit Events . 69
5.10.1 Overview . 69
5.10.2 AuditConditionEventType . 70
5.10.3 AuditConditionEnableEventType . 71
5.10.4 AuditConditionCommentEventType . 71
5.10.5 AuditConditionRespondEventType . 71
5.10.6 AuditConditionAcknowledgeEventType . 71
5.10.7 AuditConditionConfirmEventType . 72
5.10.8 AuditConditionShelvingEventType . 72
5.10.9 AuditConditionSuppressionEventType . 72
5.10.10 AuditConditionSilenceEventType. 73
5.10.11 AuditConditionResetEventType . 73
5.10.12 AuditConditionOutOfServiceEventType . 73
5.11 Condition Refresh related Events . 74
5.11.1 Overview . 74
5.11.2 RefreshStartEventType . 74

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oSIST prEN IEC 62541-9:2018
IEC CDV 62541-9 © IEC 2017 - 4 - 65E/610/CDV

5.11.3 RefreshEndEventType . 74
5.11.4 RefreshRequiredEventType . 74
5.12 HasCondition Reference type . 75
5.13 Alarm & Condition status codes . 75
5.14 Expected A&C server behaviours . 76
5.14.1 General . 76
5.14.2 Communication problems . 76
5.14.3 Redundant A&C servers . 76
6 AddressSpace organisation . 77
6.1 General . 77
6.2 EventNotifier and source hierarchy . 77
6.3 Adding Conditions to the hierarchy . 77
6.4 Conditions in InstanceDeclarations . 78
6.5 Conditions in a VariableType . 79
7 System State & Alarms . 80
7.1 Overview . 80
7.2 HasEffectDisable . 80
7.3 HasEffectEnable . 80
7.4 HasEffectSuppress . 81
7.5 HasEffectUnsuppressed . 81
8 Alarm Metrics . 82
8.1 Overview . 82
8.2 AlarmMetricsType . 82
8.3 AlarmRateVariableType . 83
8.4 Reset Method . 83
Annex A (informative) Recommended localized names . 85
A.1 Recommended state names for TwoState variables. 85
A.1.1 LocaleId “en” . 85
A.1.2 LocaleId “de” . 85
A.1.3 LocaleId “fr” . 86
A.2 Recommended dialog response options . 86
Annex B (informative) Examples . 88
B.1 Examples for Event sequences from Condition instances . 88
B.1.1 Overview . 88
B.1.2 Server maintains current state only . 88
B.1.3 Server maintains previous states . 88
B.2 AddressSpace examples . 90
Annex C (informative) Mapping to EEMUA . 92
Annex D (informative) Mapping from OPC A&E to OPC UA A&C . 93
D.1 Overview . 93
D.2 Alarms and Events COM UA wrapper . 93
D.2.1 Event areas. 93
D.2.2 Event sources . 93
D.2.3 Event categories . 94
D.2.4 Event attributes . 95
D.2.5 Event subscriptions . 95
D.2.6 Condition instances . 97
D.2.7 Condition Refresh . 98

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D.3 Alarms and Events COM UA proxy . 98
D.3.1 General . 98
D.3.2 Server status mapping . 98
D.3.3 Event Type mapping . 98
D.3.4 Event category mapping . 99
D.3.5 Event Category attribute mapping . 100
D.3.6 Event Condition mapping . 103
D.3.7 Browse mapping . 103
D.3.8 Qualified names . 104
D.3.9 Subscription filters . 105
Annex E – IEC62682 Mapping . 107
E.1 Overview . 107
E.2 Terms . 107
E.3 Alarm records & State Indications . 115
Annex F System State (Informative) . 117
F.1 Overview . 117
F.2 SystemStateStateMachineType . 118

FIGURES

Figure 1 – Base Condition state model . 16
Figure 2 – AcknowledgeableConditions state model . 17
Figure 3 – Acknowledge state model . 17
Figure 4 - Confirmed Acknowledge state model . 18
Figure 5 – Alarm state machine model . 20
Figure 7 – Multiple active states example . 22
Figure 8 – ConditionType hierarchy . 24
Figure 9 – Condition model . 28
Figure 11 – AcknowledgeableConditionType overview. 39
Figure 13 – Alarm Model . 43
Figure 14 – Shelve state transitions . 52
Figure 15 – ShelvedStateMachineType model . 52
Figure 16 – LimitAlarmType. 55
Figure 17 – ExclusiveLimitStateMachineType . 57
Figure 18 – ExclusiveLimitAlarmType . 58
Figure 19 – NonExclusiveLimitAlarmType . 59
Figure 20 – DiscreteAlarmType Hierarchy . 63
Figure 21 – ConditionClass type hierarchy . 66
Figure 22 – AuditEvent hierarchy . 70
Figure 23 – Refresh Related Event Hierarchy . 74
Figure 24 – Typical HasNotifier Hierarchy . 77
Figure 25 – Use of HasCondition in a HasNotifier hierarchy . 78
Figure 26 – Use of HasCondition in an InstanceDeclaration . 78
Figure 27 – Use of HasCondition in a VariableType . 79
Figure B.1 – Single state example . 88

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Figure B.2 – Previous state example . 89
Figure B.3 – HasCondition used with Condition instances . 90
Figure B.4 – HasCondition reference to a Condition type. 91
Figure B.5 – HasCondition used with an instance declaration . 91
Figure D.1 – The type model of a wrapped COM AE server . 95
Figure D.2 – Mapping UA Event Types to COM A&E Event Types . 99
Figure D.3 – Example mapping of UA Event Types to COM A&E categories . 100
Figure D.4 – Example mapping of UA Event Types to A&E categories with attributes . 103

TABLES

Table 1 – Parameter types defined in IEC 62541-3 . 15
Table 2 – Parameter types defined in IEC 62541-4 . 15
Table 3 – TwoStateVariableType definition . 24
Table 4 – ConditionVariableType definition . 25
Table 5 – HasTrueSubState ReferenceType . 26
Table 6 – HasFalseSubState ReferenceType . 26
Table 7 – HasAlarmSuppressionGroup ReferenceType . 27
Table 8 – AlarmGroupMember ReferenceType . 27
Table 9 – ConditionType definition . 29
Table 10 – SimpleAttributeOperand . 31
Table 11 – Disable result codes . 32
Table 12 – Disable Method AddressSpace definition . 32
Table 13 – Enable result codes . 32
Table 14 – Enable Method AddressSpace definition . 32
Table 15 – AddComment arguments . 33
Table 16 – AddComment result codes . 33
Table 17 – AddComment Method AddressSpace definition . 33
Table 18 – ConditionRefresh parameters . 34
Table 19 – ConditionRefresh result codes . 34
Table 20 – ConditionRefresh Method AddressSpace definition . 35
Table 21 – ConditionRefresh2 parameters. 35
Table 22 – ConditionRefresh2 result codes . 36
Table 23 – ConditionRefresh2 Method AddressSpace definition . 36
Table 24 – DialogConditionType Definition . 37
Table 25 – Respond parameters. 38
Table 26 – Respond Result Codes . 38
Table 27 – Respond Method AddressSpace definition . 38
Table 28 – AcknowledgeableConditionType definition . 39
Table 29 – Acknowledge parameters . 40
Table 30 – Acknowledge result codes . 40
Table 31 – Acknowledge Method AddressSpace definition . 41
Table 32 – Confirm Method parameters . 41

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Table 33 – Confirm re
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