The IRootCauseIndicationType is an interface and should be applied to AlarmTypes. It is formally defined in Table 16.

Note: The IRootCauseIndicationType cannot only be applied to AlarmTypes, but in general to subtypes of 0:ConditionType.

Table 16 – IRootCauseIndicationType Definition

Attribute	Value
BrowseName	IRootCauseIndicationType
IsAbstract	True
References	NodeClass	BrowseName	DataType	TypeDefinition	Other
Subtype of the 0:BaseInterfaceType Type defined in OPC 10000-5
0:HasProperty	Variable	PotentialRootCauses	RootCauseDataType[]	PropertyType	M
Conformance Units
AMB Asset Health Status Root Causes

The mandatory Property PotentialRootCauses contains an array of potential root causes of the alarm. This is intended to be a hint to the client and might be a local view on the potential root causes of the alarm. The list might not contain all potential root causes, that is, other potential root causes might exist as well. If the alarm itself is considered to be the root cause, the array shall be empty. If no potential root causes have been identified, there shall be at least one entry in the array indicating that the root cause is unknown.