Siemens SIMATIC ET 200AL, System Manual

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OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Communication
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Function Manual, 05/2021, A5E03735815-AJ
AddComment
You have the possibility to add comments to Alarms- objects of the
SimaticAlarmConditionType type because the support of comments is mandatory for OPC UA
Alarms and Conditions .
A comment was save in the "Comment" event field.
The following time stamp event fields belong to the comment:
•
"Comment.SourceTimestamp" for the time when the comment is transferred to the CPU??
• "Time" for the time when the Alarms object was modified
When the "AddComment" method is called, "Time" and "Comment.SourceTimestamp" are
identical.
Special features of Alarms and Conditions comments for the OPC UA server of the CPU
The AddComment method (MethodId: i=9029) has the following parameters:
Parameter Data type Description
[in] EventId ByteString EventId identifies the event notification for
which a state was reported.
[in] comment LocalizedText Text for commenting the specified Alarms
object.
Method Result Codes
Result Code Description
Good Method was successfully executed.
BadNodeIdUnknown Method was called with the wrong ConditionId
(see notes on calling the methods "Acknowlege"
and "AddComment").
BadEventIdUnknown Method was called with the wrong EventId.