Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 157)

Configuring alarms
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6–31
number. For example, if you specify 10, you will have a maximum
of 11 alarm log files at any time—10 old ones and the current one.
When a new set is started, the oldest file is deleted.
If you have set up File Management to delete the oldest files when a
new one is started, and you are exporting data to an ODBC database,
make sure you export the data before the oldest file is deleted.
About alarm log files
Alarm information is stored in dBASE IV (.dbf) format.
How log files are named
When a log file is created, it is automatically named. The name is
based on the date the file was created and the type of data it contains.
The format for the name is YYYYMMDDnz.dbf, where:
1
YYYY are the four digits of the year
MM is the month
DD is the day
n is the sequence letter (a, b, c, and so on). This letter indicates the
sequence files were created in. You can have up to 26 files (a to z)
per day. At midnight, the sequence starts at “a” again.
z is the file type: l is for alarm
If you are using short file names, or if the path where the log files are
stored does not support long file names, the format for the name is
YYMMDDnz.dbf, where YY are the last two digits of the year.