Diagnostics Via The Diagnostic Buffer Of The Cp 341 - Siemens Simatic S7-300 CP 341 User Manual

8.1.4

Diagnostics via the diagnostic buffer of the CP 341

Diagnostic buffer of the CP 341
The CP 341 has its own diagnostic buffer in which all the diagnostic events of the CP 341
are entered in the order in which they occur.
The following are displayed in the diagnostic buffer of the CP 341:
● Hardware/firmware errors on the CP 341
● Initialization and parameter assignment errors
● Errors during execution of a CPU request
● Data transmission errors (send and receive errors)
The diagnostic buffer allows the causes of errors in the point-to-point connection to be
evaluated subsequently in order, for example, to determine the causes of a STOP of the
CP 341 or to trace the occurrence of individual diagnostic events.
Note
The diagnostic buffer is a ring buffer designed for a maximum of 9 diagnostic entries. When
the diagnostic buffer is full, the oldest entry is deleted when a new entry is made in it. As a
result, the latest entry is always at the top. In the event of a POWER OFF or parameter
reassignment of the CP 341, the contents of the diagnostic buffer are lost!
Note
To view the time of day of the individual diagnostic entries, you must select the CPU in "HW
Config" and perform the time-of-day synchronization in the "Diagnostics/Clock" folder
("master" synchronization type, time interval of, for example, 10 seconds). When the CP 341
is used in distributed operation (ET 200M), the time of day cannot be displayed.
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01
www.gkbpx.com
Diagnostics with the CP 341
8.1 Diagnostics Functions of the CP 341
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