Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 205)

Configuring data logging

7–5
How .dbf log files are named
When a .dbf log file is created, it is named automatically. The name is
based on the date the file was created and the type of data it contains.
Long file names
RSView32 gives you the option to use long file names. When you
choose this option, at runtime RSView32 creates data log files with
long file names unless either the primary or secondary path does not
support long file names, or unless either path is inaccessible when data
logging starts. The maximum data log file name, including path, is 200
characters. This is the format for the name:
YYYY MM DD NNNN <Log File Identifier String> <(type)>.dbf
YYYY is the year
MM is the month
DD is the day
NNNN is the sequential file identifier. This number indicates the
sequence files were created in. You can have up to 9999 file sets
per day. At midnight, the sequence starts at 0000 again.
<Log File Identifier String> is a text string you can specify to help
identify the log file. The maximum string length is 20 characters.
<(type)> is the file type. Note that the type is enclosed in
parentheses. Narrow format has three file types: Tagname, Float
(for analog and digital tag values), and String. Wide format has two
file types: Tagname and Wide. The Wide type stores both floating
point and string values.