The MessagesTypeis used to define the object sending events. These events are used for errors, warnings and messages.
The MessagesTypeis formally defined in Table 64.
Table 64– MessagesType Definition
|
Attribute |
Value |
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|
BrowseName |
MessagesType |
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|
IsAbstract |
False |
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|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
|
Subtype of the 0:BaseObjectTypedefined in OPC 10000-5i.e. inheriting the InstanceDeclarations of that Node. |
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|
0:GeneratesEvent |
ObjectType |
AlertType |
|
|
|
|
0:GeneratesEvent |
ObjectType |
NotificationEventType |
|
|
|
|
Conformance Units |
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|
MachineTool Notification – Errors and Alerts |
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To differentiate between errors, warnings and messages on the interface, the following convention shall be used, with regard to the recommendations in OPC 10000-5:
Errors have a high Severitybetween 667 and 1000 and are using an AlertType.
Warnings have a medium Severitybetween 334 and 666 and are using an AlertType.
Messages have a low Severitylower or equal to 333 and are using a NotificationEventType.