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 |
|||||
|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Other |
|
|
Subtype of the 0:AlarmConditionType defined in OPC 10000-9 which means it inherits the InstanceDeclarations of that Node. |
||||||
|
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.