9 OPC UA EventTypes ToC Previous Next

9.1 AlertType ToC Previous Next index

The AlertType is used to transport errors and warnings.

The AlertType is formally defined in Table 77.

Table 77 – AlertType Definition

Attribute Value
BrowseName AlertType
IsAbstract False

Subtype of the 0:AlarmConditionType defined in OPC 10000-9 which means it inherits the InstanceDeclarations of that Node.

References NodeClass BrowseName DataType TypeDefinition Other
0:HasProperty Variable ErrorCode 0:String 0:PropertyType M, RO
Conformance Units          
MachineTool Notification – Errors and Alerts          

The ErrorCode is used for the manufacturer defined error code. Often this is a numeric code whose meaning can be found in the manufacturer’s documentation for the machine.

It is supposed that any error message shown to users of the machine is transmitted with the AlertType in the Message Property inherited from the BaseEventType.

Previous Next