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VIPA System 300S
7.3 Diagnostics via diagnostic buffer
Overview
Reading the diagnostic
buffer via PG
Diagnostic message
HB130 | CP | 341-1CH01 | en | 18-40
The CP has its own diagnostic buffer. There all the diagnostic events of the CP are
entered in the order in which they occur.
The following errors may be reported:
Hardware respectively firmware errors
n
n
Initialization and parameterization errors
n
Errors during execution of a CPU request
n
Data transmission error (send and receive errors)
–
The diagnostic buffer is a ring buffer for a maximum of 9 diagnostic
entries.
–
When the diagnostic buffer is full, the oldest entry is deleted when a
new entry is recorded.
–
This means that the most recent entry is always the first.
–
The contents of the diagnostic buffer are lost in the event of a Pow-
erOFF or when the CP is re-parameterized.
Via the Siemens SIMATIC manager the contents of the diagnostic buffer of the CP may
be read by means of the PLC functions. The access takes place with the following pro-
ceeding:
1.
Start the Siemens SIMATIC manager with your project.
2.
Select the station and open the hardware object via the hardware configurator.
3.
Select the CP and choose 'PLC è Module'
ð The "Module Information" dialog box of the CP appears.
4.
Select the "Diagnostic Buffer" register.
ð Here the most recent diagnostic events of the CP are displayed.
Additional information on the cause of an error may be found at "Details". The event's
n
numeric code is displayed in the "Event ID" field. The initial F1C8h is always the
same.
n
The rest of the ID code corresponds to event class and event number.
'Diagnostics via FB STATUS' page 93
n
By clicking the [Help on Event] button the corresponding Remedy as described in the
table before is displayed. With the button [Update], diagnostics data of the CP were
refreshed.
Diagnostics and error behavior
Diagnostics via diagnostic buffer
Ä Chap. 7.2
103
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