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10/2021 · User Manual Version 1.0 · valid from firmware version 3.1.22
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WEBLOG 250
4.1.9 Delete old data entries
You can delete unneeded data
from the log database by clicking
on the button “Clean-up log
data”. Please enter a period of days. Data
older than this period will be erased. Please
note that the data base size will not be
reduced if the period is > 0 days , because
the memory of the erased data is just marked
as “deleted” and will be later overwritten by
new data. But if you enter 0 days then the
complete database is erased and the
memory is cleared.
4.1.10 Logbook
A lighted yellow warning triangle in the status line indicates that theWebLog has written a new
entry (or more) into the logbook. You can open the logbook by a push or a click on the warning
triangle to read the entries.
The entries in the log book can show for example errors occurred during communication in M-Bus. The
above example shows a meter which could not be read several times during logging. A short circuit on the
M-Bus is also a possible error message. Another example of possible error messages is that the device
could notify a failed synchronisation of the clock from a time server in the internet.