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IEC 62541-9
Edition 3.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
OPC unified architecture –
Part 9: Alarms and Conditions
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IEC 62541-9
Edition 3.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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
...