oSIST prEN IEC 62541-9:2024

SLOVENSKI STANDARD
01-marec-2024
Enotna arhitektura OPC - 9. del: Alarmi in pogoji
OPC Unified Architecture - Part 9: Alarms and Conditions
OPC Unified Architecture - Teil 9: Alarme und Zustände
Architecture unifiée OPC - Partie 9: Alarmes et conditions
Ta slovenski standard je istoveten z: prEN IEC 62541-9:2024
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

65E/1056/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62541-9 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-01-26 2024-04-19
SUPERSEDES DOCUMENTS:
65E/981/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.
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TITLE:
OPC Unified Architecture - Part 9: Alarms and Conditions

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
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
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IEC CDV 62541-9 © IEC 2023 i
1 CONTENTS
3 FIGURES . iv
4 TABLES . v
5 FOREWORD . x
6 1 Scope . 1
7 2 Normative references . 1
8 3 Terms, definitions, and abbreviations . 2
9 3.1 Terms and definitions . 2
10 3.2 Abbreviations and symbols . 4
11 3.3 Used data types . 4
12 4 Concepts . 4
13 4.1 General . 4
14 4.2 Conditions . 4
15 4.3 Acknowledgeable Conditions . 6
16 4.4 Previous states of Conditions . 8
17 4.5 Condition state synchronization . 8
18 4.6 Severity, quality, and comment . 9
19 4.7 Dialogs . 9
20 4.8 Alarms . 9
21 4.9 Multiple active states . 11
22 4.10 Condition instances in the AddressSpace . 12
23 4.11 Alarm and Condition auditing. 13
24 4.12 Alarms in a system . 13
25 5 Model . 13
26 5.1 General . 13
27 5.2 Two-state state machines . 14
28 5.3 ConditionVariable . 16
29 5.4 ReferenceTypes . 17
30 5.4.1 General . 17
31 5.4.2 HasTrueSubState ReferenceType . 17
32 5.4.3 HasFalseSubState ReferenceType . 17
33 5.4.4 HasAlarmSuppressionGroup ReferenceType. 18
34 5.4.5 AlarmGroupMember ReferenceType . 18
35 5.4.6 AlarmSuppressionGroupMember ReferenceType . 18
36 5.5 Condition Model . 19
37 5.5.1 General . 19
38 5.5.2 ConditionType . 20
39 5.5.3 Condition and branch instances . 24
40 5.5.4 Disable Method . 24
41 5.5.5 Enable Method . 25
42 5.5.6 AddComment Method . 25
43 5.5.7 ConditionRefresh Method . 26
44 5.5.8 ConditionRefresh2 Method . 28
45 5.6 Dialog Model . 30

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46 5.6.1 General . 30
47 5.6.2 DialogConditionType . 30
48 5.6.3 Respond Method . 31
49 5.6.4 Respond2 Method . 32
50 5.7 Acknowledgeable Condition Model . 33
51 5.7.1 General . 33
52 5.7.2 AcknowledgeableConditionType . 33
53 5.7.3 Acknowledge Method . 34
54 5.7.4 Confirm Method . 35
55 5.8 Alarm model . 36
56 5.8.1 General . 36
57 5.8.2 AlarmConditionType . 37
58 5.8.3 AlarmGroupType . 42
59 5.8.4 AlarmSuppressionGroupType . 42
60 5.8.5 Reset Method. 42
61 5.8.6 Reset2 Method . 43
62 5.8.7 Silence Method . 44
63 5.8.8 Suppress Method . 45
64 5.8.9 Suppress2 Method . 46
65 5.8.10 Unsuppress Method . 46
66 5.8.11 Unsuppress2 Method . 47
67 5.8.12 RemoveFromService Method . 48
68 5.8.13 RemoveFromService2 Method . 48
69 5.8.14 PlaceInService Method . 49
70 5.8.15 PlaceInService2 Method . 50
71 5.8.16 GetGroupMemberships Method . 51
72 5.8.17 ShelvedStateMachineType . 51
73 5.8.18 LimitAlarmType . 59
74 5.8.19 Exclusive Limit Types. 62
75 5.8.20 NonExclusiveLimitAlarmType . 65
76 5.8.21 Level Alarm . 67
77 5.8.22 Deviation Alarm . 68
78 5.8.23 Rate of change Alarms . 69
79 5.8.24 Discrete Alarms . 70
80 5.8.25 DiscrepancyAlarmType . 73
81 5.9 ConditionClasses . 74
82 5.9.1 Overview . 74
83 5.9.2 BaseConditionClassType . 74
84 5.9.3 ProcessConditionClassType . 75
85 5.9.4 MaintenanceConditionClassType . 75
86 5.9.5 SystemConditionClassType . 75
87 5.9.6 SafetyConditionClassType . 76
88 5.9.7 HighlyManagedAlarmConditionClassType . 76
89 5.9.8 TrainingConditionClassType . 76
90 5.9.9 StatisticalConditionClassType . 77
91 5.9.10 TestingConditionClassType . 77
92 5.10 Audit Events . 77
93 5.10.1 Overview . 77

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94 5.10.2 AuditConditionEventType . 78
95 5.10.3 AuditConditionEnableEventType . 79
96 5.10.4 AuditConditionCommentEventType . 79
97 5.10.5 AuditConditionRespondEventType . 79
98 5.10.6 AuditConditionAcknowledgeEventType . 79
99 5.10.7 AuditConditionConfirmEventType . 80
100 5.10.8 AuditConditionShelvingEventType . 80
101 5.10.9 AuditConditionSuppressionEventType . 80
102 5.10.10 AuditConditionSilenceEventType. 81
103 5.10.11 AuditConditionResetEventType . 81
104 5.10.12 AuditConditionOutOfServiceEventType . 81
105 5.11 Condition Refresh related Events . 82
106 5.11.1 Overview . 82
107 5.11.2 RefreshStartEventType . 82
108 5.11.3 RefreshEndEventType . 82
109 5.11.4 RefreshRequiredEventType . 83
110 5.12 HasCondition Reference type . 83
111 5.13 Alarm & Condition status codes . 83
112 5.14 Expected A & C server behaviours . 84
113 5.14.1 General . 84
114 5.14.2 Communication problems . 84
115 5.14.3 Redundant A & C servers . 84
116 6 AddressSpace organisation . 85
117 6.1 General . 85
118 6.2 EventNotifier and source hierarchy . 85
119 6.3 Adding Conditions to the hierarchy . 85
120 6.4 Conditions in InstanceDeclarations . 86
121 6.5 Conditions in a VariableType . 86
122 7 System State & Alarms . 88
123 7.1 Overview . 88
124 7.2 HasEffectDisable . 88
125 7.3 HasEffectEnable . 88
126 7.4 HasEffectSuppressed . 89
127 7.5 HasEffectUnsuppressed . 89
128 8 Alarm Summary and Objects . 90
129 8.1 Overview . 90
130 8.2 AlarmState Variable . 91
131 8.3 AlarmMask . 92
132 9 Alarm Metrics . 92
133 9.1 Overview . 92
134 9.2 AlarmMetricsType . 93
135 9.3 AlarmRateVariableType . 94
136 9.4 Reset Method . 94
137 Annex A (informative) Recommended localized names . 95
138 A.1 Recommended state names for TwoState Variables . 95
139 A.1.1 LocaleId “en” . 95
140 A.1.2 LocaleId “de” . 95

IEC CDV 62541-9 © IEC 2023 iv
141 A.1.3 LocaleId “fr” . 96
142 A.2 Recommended dialog response options . 96
143 Annex B (informative) Examples . 98
144 B.1 Examples for Event sequences from Condition instances . 98
145 B.1.1 Overview . 98
146 B.1.2 Server maintains current state only . 98
147 B.1.3 Server maintains previous states . 98
148 B.1.4 Server current-State Model with Suppression . 100
149 B.1.5 Example for On-Delay, Off Delay and ReAlarmTime . 101
150 B.2 AddressSpace examples . 102
151 Annex C (informative) Mapping to EEMUA . 105
152 Annex D (informative) Mapping from OPC A&E to OPC UA A & C . 106
153 D.1 Overview . 106
154 D.2 Alarms and Events COM UA wrapper . 106
155 D.2.1 Event areas. 106
156 D.2.2 Event sources . 106
157 D.2.3 Event categories . 107
158 D.2.4 Event attributes . 108
159 D.2.5 Event subscriptions . 108
160 D.2.6 Condition instances . 110
161 D.2.7 Condition Refresh . 111
162 D.3 Alarms and Events COM UA proxy . 111
163 D.3.1 General . 111
164 D.3.2 Server status mapping . 111
165 D.3.3 Event Type mapping . 111
166 D.3.4 Event category mapping . 112
167 D.3.5 Event Category attribute mapping . 113
168 D.3.6 Event Condition mapping . 116
169 D.3.7 Browse mapping . 116
170 D.3.8 Qualified names . 117
171 D.3.9 Subscription filters . 118
172 Annex E – IEC 62682 Mapping . 120
173 E.1 Overview . 120
174 E.2 Terms . 120
175 E.3 Alarm records & State Indications . 124
176 Annex F System State (Informative) . 125
177 F.1 Overview . 125
178 F.2 SystemStateStateMachineType . 126
180 FIGURES
182 Figure 1 – Base Condition state model . 5
183 Figure 2 – AcknowledgeableConditions state model . 6
184 Figure 5 – Alarm state machine model . 10
185 Figure 6 – Typical Alarm Timeline example . 11
186 Figure 7 – Multiple active states example . 12

IEC CDV 62541-9 © IEC 2023 v
187 Figure 8 – ConditionType hierarchy . 14
188 Figure 10 – Condition model . 20
189 Figure 12 – DialogConditionType Overview . 30
190 Figure 13 – AcknowledgeableConditionType overview. 33
191 Figure 14 – AlarmConditionType Hierarchy Model . 37
192 Figure 15 – Alarm Model . 38
193 Figure 16 – Shelve state transitions . 52
194 Figure 17 – ShelvedStateMachineType model . 53
195 Figure 18 – LimitAlarmType. 60
196 Figure 19 – ExclusiveLimitStateMachineType . 63
197 Figure 20 – ExclusiveLimitAlarmType . 65
198 Figure 21 – NonExclusiveLimitAlarmType . 66
199 Figure 22 – DiscreteAlarmType Hierarchy . 71
200 Figure 23 – ConditionClass type hierarchy . 74
201 Figure 24 – AuditEvent hierarchy . 78
202 Figure 25 – Refresh Related Event Hierarchy . 82
203 Figure 26 – Typical HasNotifier Hierarchy . 85
204 Figure 27 – Use of HasCondition in a HasNotifier hierarchy . 86
205 Figure 28 – Use of HasCondition in an InstanceDeclaration . 86
206 Figure 29 – Use of HasCondition in a VariableType . 87
207 Figure B.1 – Single state example . 98
208 Figure B.2 – Previous state example . 99
209 Figure B.3 – SuppressedState and OutOfServiceState example . 100
210 Figure B.5 – HasCondition used with Condition instances . 103
211 Figure B.6 – HasCondition reference to a Condition type. 104
212 Figure B.7 – HasCondition used with an instance declaration . 104
213 Figure D.1 – The type model of a wrapped COM AE server . 108
214 Figure D.2 – Mapping UA Event Types to COM A&E Event Types . 112
215 Figure D.3 – Example mapping of UA Event Types to COM A&E categories . 113
216 Figure D.4 – Example mapping of UA Event Types to A&E categories with attributes . 116
217 Figure F.1 – SystemState transitions . 125
218 Figure F.2 – SystemStateStateMachineType Model . 126
220 TABLES
222 Table 1 – Parameter types defined in 10000-3 . 4
223 Table 2 – Parameter types defined in 10000-4 . 4
224 Table 3 – TwoStateVariableType definition . 14
225 Table 4 – ConditionVariableType definition . 16
226 Table 5 – HasTrueSubState ReferenceType . 17
227 Table 6 – HasFalseSubState ReferenceType . 18
228 Table 7 – HasAlarmSuppressionGroup ReferenceType . 18

IEC CDV 62541-9 © IEC 2023 vi
229 Table 8 – AlarmGroupMember ReferenceType . 18
230 Table 9 – AlarmSuppressionGroupMember ReferenceType . 19
231 Table 10 – ConditionType definition . 21
232 Table 11 – ConditionType Additional Subcomponents . 21
233 Table 12 – ConditionId SimpleAttributeOperand Illustration . 24
234 Table 13 – Disable result codes . 24
235 Table 14 – Disable Method AddressSpace definition . 25
236 Table 15 – Enable result codes . 25
237 Table 16 – Enable Method AddressSpace definition . 25
238 Table 17 – AddComment arguments . 26
239 Table 18 – AddComment result codes . 26
240 Table 19 – AddComment Method AddressSpace definition . 26
241 Table 20 – ConditionRefresh parameters . 27
242 Table 21 – ConditionRefresh result codes . 27
243 Table 22 – ConditionRefresh Method AddressSpace definition . 28
244 Table 23 – ConditionRefresh2 parameters. 28
245 Table 24 – ConditionRefresh2 result codes . 29
246 Table 25 – ConditionRefresh2 Method AddressSpace definition . 29
247 Table 26 – DialogConditionType definition . 30
248 Table 27 – DialogConditionType Additional Subcomponents . 30
249 Table 28 – Respond parameters. 31
250 Table 29 – Respond Result Codes . 31
251 Table 30 – Respond Method AddressSpace definition . 32
252 Table 31 – Respond2 parameters . 32
253 Table 32 – Respond2 Result Codes . 32
254 Table 33 – Respond2 Method AddressSpace definition . 32
255 Table 34 – AcknowledgeableConditionType definition . 33
256 Table 35 – AcknowledgeableConditionType Additional Subcomponents . 33
257 Table 36 – Acknowledge parameters . 34
258 Table 37 – Acknowledge result codes . 34
259 Table 38 – Acknowledge Method AddressSpace definition . 35
260 Table 39 – Confirm Method parameters . 35
261 Table 40 – Confirm result codes . 35
262 Table 41 – Confirm Method AddressSpace definition . 36
263 Table 42 – AlarmConditionType definition . 38
264 Table 43 – AlarmConditionType Additional Subcomponents . 39
265 Table 44 – AlarmGroupType definition . 42
266 Table 45 – AlarmSuppressionGroupType definition . 42
267 Table 46 – Reset result codes . 43
268 Table 47 – Reset Method AddressSpace definition . 43
269 Table 48 – Reset2 Method parameters . 43
270 Table 49 – Reset2 result codes . 44

IEC CDV 62541-9 © IEC 2023 vii

271 Table 50 – Reset2 Method AddressSpace definition . 44
272 Table 51 – Silence result codes . 44
273 Table 52 – Silence Method AddressSpace definition . 45
274 Table 53 – Suppress result codes . 45
275 Table 54 – Suppress Method AddressSpace definition . 45
276 Table 55 – Suppress2 Method parameters . 46
277 Table 56 – Suppress2 Method AddressSpace definition . 46
278 Table 57 – Unsuppress result codes . 47
279 Table 58 – Unsuppress Method AddressSpace definition . 47
280 Table 59 – Unsuppress2 Method parameters . 47
281 Table 60 – Unsuppress2 Method AddressSpace definition . 48
282 Table 61 – RemoveFromService result codes . 48
283 Table 62 – RemoveFromService Method AddressSpace definition . 48
284 Table 63 – RemoveFromService2 Method parameters . 49
285 Table 64 – RemoveFromService2 result codes . 49
286 Table 65 – RemoveFromService2 Method AddressSpace definition . 49
287 Table 66 – PlaceInService result codes . 50
288 Table 67 – PlaceInService Method AddressSpace definition . 50
289 Table 68 – PlaceInService2 Method parameters . 50
290 Table 69 – PlaceInService2 result codes . 50
291 Table 70 – PlaceInService2 Method AddressSpace definition . 51
292 Table 71 – GetGroupMemberships result codes . 51
293 Table 72 – GetGroupMemberships Method AddressSpace definition . 51
294 Table 73 – ShelvedStateMachineType definition . 53
295 Table 74 – ShelvedStateMachineType Additional References . 54
296 Table 76 – Unshelve result codes. 55
297 Table 77 – Unshelve Method AddressSpace definition . 55
298 Table 78 – Unshelve2 Method parameters . 55
299 Table 79 – Unshelve2 result codes . 56
300 Table 80 – Unshelve2 Method AddressSpace definition . 56
301 Table 81 – TimedShelve parameters . 56
302 Table 82 – TimedShelve result codes . 56
303 Table 83 – TimedShelve Method AddressSpace definition . 57
304 Table 84 – TimedShelve2 parameters . 57
305 Table 85 – TimedShelve2 result codes . 57
306 Table 86 – TimedShelve2 Method AddressSpace definition . 58
307 Table 87 – OneShotShelve result codes . 58
308 Table 88 – OneShotShelve Method AddressSpace definition . 58
309 Table 89 – OneShotShelve2 Method parameters . 59
310 Table 90 – OneShotShelve2 result codes . 59
311 Table 91 – OneShotShelve2 Method AddressSpace definition . 59
312 Table 92 – LimitAlarmType definition . 61

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313 Table 93 – ExclusiveLimitStateMachineType definition . 63
314 Table 94 – ExclusiveLimitStateMachineType Additional References . 64
315 Table 96 – ExclusiveLimitAlarmType definition . 65
316 Table 97 – NonExclusiveLimitAlarmType definition . 66
317 Table 98 – NonExclusiveLimitAlarmType Additional Subcomponents . 67
318 Table 99 – NonExclusiveLevelAlarmType definition . 67
319 Table 100 – ExclusiveLevelAlarmType definition . 68
320 Table 101 – NonExclusiveDeviationAlarmType definition . 68
321 Table 102 – ExclusiveDeviationAlarmType definition . 69
322 Table 103 – NonExclusiveRateOfChangeAlarmType definition . 70
323 Table 104 – ExclusiveRateOfChangeAlarmType definition . 70
324 Table 105 – DiscreteAlarmType definition . 71
325 Table 106 – OffNormalAlarmType definition . 71
326 Table 107 – SystemOffNormalAlarmType definition . 72
327 Table 108 – TripAlarmType definition . 72
328 Table 109 – InstrumentDiagnosticAlarmType definition . 72
329 Table 110 – SystemDiagnosticAlarmType definition . 73
330 Table 111 – CertificateExpirationAlarmType definition . 73
331 Table 112 – DiscrepancyAlarmType definition . 73
332 Table 113 – BaseConditionClassType definition . 75
333 Table 114 – ProcessConditionClassType definition . 75
334 Table 115 – MaintenanceConditionClassType definition . 75
335 Table 116 – SystemConditionClassType definition . 76
336 Table 117 – SafetyConditionClassType definition . 76
337 Table 118 – HighlyManagedAlarmConditionClassType definition . 76
338 Table 119 – TrainingConditionClassType definition . 77
339 Table 120 – StatisticalConditionClassType definition . 77
340 Table 121 – TestingConditionClassType definition . 77
341 Table 122 – AuditConditionEventType definition . 78
342 Table 123 – AuditConditionEnableEventType definition . 79
343 Table 124 – AuditConditionCommentEventType definition . 79
344 Table 125 – AuditConditionRespondEventType definition . 79
345 Table 126 – AuditConditionAcknowledgeEventType definition . 80
346 Table 127 – AuditConditionConfirmEventType definition . 80
347 Table 128 – AuditConditionShelvingEventType definition . 80
348 Table 129 – AuditConditionSuppressionEventType definit
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