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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Definition of SimaticEventType
The figure below shows that the type "SimaticEventType" is derived directly from
BaseEventType.
BaseEventType is the basic type definition for events with OPC UA.
All event types for OPC UA can be defined, directly or indirectly, based on BaseEventType.
The "SimaticEventType" type is defined in the SIMATIC namespace
(http://www.siemens.com/simatic-s7-opcua).
SimaticEventType has all properties of BaseEventType as well as the special properties which
are an image of the field structure of SIMATIC alarms.
Description of the event fields for SimaticEventType
The following table contains information on the fields of SimaticEventType for alarms of the
type "Information only". 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 general description of the fields in
the specification OPC 10000-5: OPC Unified Architecture, Part 5: Information Model, Release
1.04.
BrowsePath DataType Explanations
EventId ByteString Unique Event ID of the event
EventType NodeId Node ID of the event type
Time UtcTime Time stamp of the event (Event occurrence)
ReceiveTime UtcTime Current time stamp at which the OPC UA event
was generated.
Message LocalizedText Event text
Severity UInt16 Priority of the alarm from SIMATIC (0..16),
spread into a range from 1..1000 with OPC UA,
see following table.
The priority indicates the urgency with which the
event needs a response.
3:AdditionalText_01 LocalizedText Optional additional text 1
... ... ...
3:AdditionalText_09 LocalizedText Optional additional text 9
3:AssociatedValue_01 3:SimaticAssociatedAlar
mValue
Optional associated value 1 (not for system di-
agnostics)
... ... ...
3:AssociatedValue_10 3:SimaticAssociatedAlar
mValue
Optional associated value 10 (not for system
diagnostics)
3:InfoText LocalizedText Info text