The AdditiveAlarmType represent additive-related text messages (alarms, error messages, warnings, information) of the peripheral device and is a subtype of HelpOffNormalAlarmType.

Table 25 – AdditiveAlarmType Definition

Attribute	Value
BrowseName	AdditiveAlarmType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of 3:HelpOffNormalAlarmType defined in OPC 40083

The SourceNode (included in BaseEventType) shall contain the NodeId of the related additive. In case of medium or high severity, the IMM can sort out bad parts or stop production.