The HelpOffNormalAlarmType can be used by devices, to inform the client about a Condition that is considered to be not normal. It is a subtype of the OffNormalAlarmType defined in OPC UA Part 9 and adds the Property Helptext to give some additional information to the operator.
Figure 19 – HelpOffNormalAlarmType Overview
Table 141 – HelpOffNormalAlarmType Definition
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Attribute |
Value |
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BrowseName |
HelpOffNormalAlarmType |
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IsAbstract |
False |
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References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
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Subtype of 0:OffNormalAlarmType defined in OPC UA Part 9 |
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0:HasProperty |
Variable |
HelpText |
0:LocalizedText |
0:PropertyType |
M |
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0:HasSubtype |
ObjectType |
MonitoredParameterAlarmType |
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Servers can use the Property HelpText also in other server specific alarms which are not derived from OffNormalAlarmType.