The NonExclusiveRateOfChangeAlarmType is a special level Alarm utilized with one or more non-exclusive states. If for example both the High and HighHigh states need to be maintained as active at the same time this AlarmConditionType should be used
The NonExclusiveRateOfChangeAlarmType is based on the NonExclusiveLimitAlarmType. It is formally defined in Table 103.
Table 103 – NonExclusiveRateOfChangeAlarmType definition
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Attribute |
Value |
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BrowseName |
NonExclusiveRateOfChangeAlarmType |
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IsAbstract |
False |
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References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
ModellingRule |
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Subtype of the NonExclusiveLimitAlarmType defined in clause 5.8.20. |
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HasProperty |
Variable |
EngineeringUnits |
EUInformation |
PropertyType |
Optional |
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ConformanceUnits |
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A & C Non-Exclusive RateOfChange |
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EngineeringUnits provides the engineering units associated with the limits values. If this is not provided the assumed Engineering Unit is the same as the EU associated with the parent variable per second e.g. if parent is meters, this unit is meters/second.