5 Model ToC Previous Next

5.8 Alarm model ToC Previous Next

5.8.13 NonExclusiveLimitAlarmType ToC Previous Next index

The NonExclusiveLimitAlarmType is used to specify the common behaviour for Alarm Types with multiple non-exclusive limits. The NonExclusiveLimitAlarmType is illustrated in Figure 19.

readme_files/image021.png Figure 19 – NonExclusiveLimitAlarmType

The NonExclusiveLimitAlarmType is formally defined in Table 64.

Table 64 – NonExclusiveLimitAlarmType definition

Attribute Value
BrowseName NonExclusiveLimitAlarmType
IsAbstract False

Subtype of the LimitAlarmType defined in clause 5.8.11.

References NodeClass BrowseName DataType TypeDefinition Modelling Rule
HasSubtype ObjectType NonExclusiveLevelAlarmType Defined in Clause 5.8.14.2    
HasSubtype ObjectType NonExclusiveDeviationAlarmType Defined in Clause 5.8.15.2    
HasSubtype ObjectType NonExclusiveRateOfChangeAlarmType Defined in Clause 5.8.16.2    
HasComponent Variable HighHighState LocalizedText TwoStateVariableType Optional
HasComponent Variable HighState LocalizedText TwoStateVariableType Optional
HasComponent Variable LowState LocalizedText TwoStateVariableType Optional
HasComponent Variable LowLowState LocalizedText TwoStateVariableType Optional

HighHighState, HighState, LowState, and LowLowState represent the non-exclusive states. As an example, it is possible that both HighState and HighHighState are in their True state. Vendors may choose to support any subset of these states. Recommended state names are described in Annex A.

Four optional limits are defined that configure these states. At least the HighState or the LowState shall be provided even though all states are optional. It is implied by the definition of a HighState and a LowState, that these groupings are mutually exclusive. A value cannot exceed both a HighState value and a LowState value simultaneously.

Previous Next