Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 206)

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RSView32 User’s Guide
Example: Long file name
The log file named 1997 10 28 0004 Oven Temperatures (Wide).dbf
was created in the year 1997, month 10, and day 28. The 0004
indicates that this is the fourth file set created that day. Oven
Temperatures is the log file identifier string, which the user defined to
help identify the data. (Wide) indicates that this file is in wide file
format and may contain both floating point and string tag data.
Short file names
RSView32 uses 8-character file names if you do not choose to use
long file names, or if either the primary or secondary path does not
support long file names, or if either path is inaccessible when data
logging starts. This is the format for 8-character file names:
YYMMDDnz.dbf
YY is 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 file sets (a to
z) per day. If you attempt to create a 27th file, RSView32 continues
logging data to the 26th file. At midnight, the sequence starts at
“a” again.
z is the file type. Narrow format has three file types: t for tag names,
f for floating point (analog and digital tag) values, and s for string
tag values. Wide format has a two file types: t for tag names and w
for wide. The w file stores both floating point and string values.