Siemens SIMATIC ET 200AL System Manual page 1415

OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Definition of SimaticAlarmConditionType
The following figure shows how events of the type "SimaticAlarmConditionType" are defined
by a series of expansions to the OPC UA "BaseEventType".
Description of the event fields for SimaticAlarmConditionType
The following table contains information about the fields of SimaticAlarmConditionType for
stateful and acknowledgeable alarms, which are added to the event fields such as
SimaticEventType. Fields that are optional according to OPC UA and are not used by the OPC
UA server of the CPU are omitted. You can also find a description of the fields in the
specification OPC 10000-9: OPC Unified Architecture, Part 9: Alarms & Conditions, Release
1.04.
BrowsePath
ConditionClassId
ConditionClassName
Retain
Comment
Comment.SourceTimestamp
AckedState
AckedState.Id
294
DataType Explanations
NodeId Node IDs for SystemConditionClassType,
ProcessConditionClassType or BaseCondi-
tionClassType are possible
LocalizedText Display name of the ConditionClassId
Boolean Indicates that the alarm is still relevant for
OPC UA clients (set if alarm is still pending
and not acknowledged).
LocalizedText
•
•
UtcTime Time stamp for the last change of the com-
ment field
LocalizedText "Acknowledged" or "Unacknowledged"
Boolean Set, if acknowledged
Most recent comment entered using the
"AddComment" or "Acknowledge" meth-
od.
ZERO after a server restart and if no
comment was entered.
Function Manual, 05/2021, A5E03735815-AJ
Communication