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
Function Manual, 05/2021, A5E03735815-AJ
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Acknowledge
The Acknowledge method (MethodId: i=9111) has the following parameters:
Parameter Data type Description
[in] EventId ByteString EventId identifies a specific event notification.
Only events whose AckedState.Id field has the
value "False", can be acknowledged with the
"Acknowledge" method.
[in] comment LocalizedText Text for commenting the acknowledgment,
e.g. by an operator.
See also supplementary description of the
"AddComment" method.
Method Result Codes
Result Code Description
Good Method was successfully executed.
BadNotSupported Method cannot be called because the option for acknowl-
edging for Alarms and Conditions by OPC UA clients is
deactivated in the CPU properties for OPC UA.
BadConditionBranchAlreadyAcked Acknowledgment has already been made.
BadNodeIdUnknown Method was called with the wrong ConditionId (see notes
on ObjectId).
BadEventIdUnknown Method was called with the wrong EventId.
ConditionRefresh
The ConditionRefresh method (MethodId: i=3875) has the following parameters:
Parameter Data type Description
[in] SubscriptionId Uint32 SubscriptionId of the subscription to be updat-
ed.
Method Result Codes
Result Code Description
Bad_SubscriptionIdInvalid The SubscriptinId is not valid.
Bad_RefreshInProgress The "ConditionRefresh" is currently running.
Bad_UserAccessDenied The method "ConditionRefresh" runs in the context of a wrong ses-
sion. This means that the subscription belongs to a different session.
Note
ConditionRefresh2 method
The OPC UA server of the S7-1500 CPU does not support the ConditionRefresh2 method
which can specifically synchronize a monitored item (MonitoredItem) in a subscription. In this
case, the OPC UA Server returns the result code "Bad_MethodInvalid". Use the method
"ConditionRefresh" instead.