Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 227)

Configuring data logging
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7–27
To restore the secondary or backup data, give operators a way to issue
the DataLogMergeToPrimary > command or the
DataLogMergeToPrimary * command at runtime. For example, you
can create a button object and use the command as the press action.
Creating .dbf log files
If your data log model uses the ODBC format, data is added
continually to the same database, and this section does not apply. If
your data log model uses the dBASE IV format, RSView32 logs the
data to sets of files. You can set up your project to create new sets of
.dbf log files, over these time intervals:
periodically
at specified times
when a particular event occurs
never
If you use short file names, a maximum of 26 new file sets can be
created for each data log model in a given 24–hour period. If you
attempt to create a 27th file, RSView32 continues logging data to the
26th file. At midnight, the sequence starts over again with a new file
set (with the new date).
Log files are saved in the directory you specified in the Paths tab.
Monitoring disk space
If the hard disk space for the primary path is full, data logging
switches to the secondary path, if enabled, until space becomes
available on the primary path. However, if you do not set up a
secondary path, when the primary path runs out of disk space data
logging stops and no more log files are created.
To prevent loss of data, you can monitor disk space. See page 18-14.