● Specify the status used to report an event
● Use the "Alarm Logging" editor on the PCS 7 OS to modify the selection of message
information to be displayed in WinCC
Message accuracy for signal transitions
Note
Be aware of the accuracy of the message system.
If events are recorded within one scan cycle, they can appear in the wrong order in the
message list.
Remedy: You can find information about this in the function manual
Process Control System
PCS 7; High-precision Time Stamping
.
Additional information
You can find detailed information on configuring messages in the following manuals:
● Configuration manual
Process Control System PCS 7; Engineering System
● Configuration manual
PCS 7 Process Control System; Operator Station
5.3 Origin of a message
Message path
Messages can originate in different locations in PCS 7 depending on the configuration. Each
message is given a time stamp. The event which causes a time stamp to be assigned to a
message depends on the place where the message has originated. Irrespective of where they
Message concept of PCS 7
5.3 Origin of a message
Service support and diagnostics (V8.0)
Service Manual, 03/2012, A5E02779775-02 55
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