8400 StateLine C | Reference manual
Diagnostics & error management
Logbook
390 L Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
9.5.1 Functional description
The structure of the logbook corresponds to a ring buffer:
9.5.2 Filtering logbook entries
The logbook adds new entries to the ring buffer after they have been passed through a
parameterisable filter. This filter helps you to exclude certain events from being entered
into the logbook which would trigger a certain error response (fault, trouble, warning,
information, etc.).
C00169
(bit 1 ... bit 6) includes a bit coded specification of the events which are to be
entered into the logbook. In the Lenze setting, all events are entered into the logbook.
Counter for multiple entries
In order to prevent the ring buffer from overflowing with identical
errors with frequent
occurrence e.g. during commissioning, identical errors will not lead to new line entries in
the configuration of the logbook in the Lenze setting. Instead, one counter will be counted
up for this error.
The time of the error is always the time of its first occurrence. Hence, a new logbook line
will only be generated if a new error occurs.
The error counter can be deactivated by resetting bit 9 in C00169
.
As long as free logbook memory locations are available, the
entries will be saved to the next free memory location ().
If all memory locations are occupied, the oldest entry () will
be deleted in favour of a new entry.
The newest entries will always remain available.
Note!
In the event of a supply voltage failure, the logbook is saved and reloaded
automatically when the controller is switched on. This ensures that the error
history of the device does not get lost. For this reason it is very important to act
with caution when deleting the logbook entries.
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