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
9.3.7
Using diagnostics options
9.3.7.1
Diagnostics of the OPC UA server
Online diagnostics of the OPC UA server
The S7-1500 CPU OPC UA server can be diagnosed online with standard OPC UA clients, such
as UaExpert.
The diagnostic information is subdivided into the following areas:
•
Server Diagnostics
•
Sessions Diagnostics
•
Subscriptions Diagnostics
In the address space of the server, for example, the following nodes are available with
diagnostic information:
•
ServerDiagnosticsSummary
: Server diagnostics summary
–
CurrentSessionCount: Number of active sessions
–
SecurityRejectedSessionCount: Number of sessions rejected due to mismatching end
point security settings between client and server
•
SessionsDiagnosticsSummary
: Session diagnostics summary
–
ActualSessionTimeout: Set time that a session lasts, e.g. in the event of disconnection
•
SubscriptionsDiagnosticsArray
: ARRAY with one element per subscription for each
session
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