Rockwell-automation 9301 Series RSView32 Users Guide Instrukcja Użytkownika Strona 233

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Configuring data logging 7–33
To specify when to delete .dbf files or ODBC database data:
1. In the Data Log Setup editor, click the File Management tab. If you
are using the ODBC storage format, go to step 3.
2. If you are using dBASE IV storage format, under Delete Oldest
Files, select one or both check boxes and type a number to specify
when to delete the .dbf log file sets. If you select both check boxes,
files sets are deleted after the maximum time or after the maximum
number of files is reached, whichever happens first. If you do not
want files deleted, leave the check boxes under Delete Oldest Files
blank.
After Maximum Time
File sets are deleted after the maximum time has expired. For
example, if two days is the specified time, file sets are deleted at
midnight of the third day so you always have the two previous
days’ data and the current day’s data.
After Maximum Files
The oldest log file set is deleted after the specified maximum has
been reached. The files currently being logged to are not included
in this number. For example, if you specify 10, you will have a
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