7 Before Programming
7.1 File format available in the CF-ADP
41
FX
3U
-CF-ADP User's Manual
1
Introduc
tion
2
S
pecifi
cation
3
Sy
stem
Configurati
o
n
4
Ins
tal
lation
5
Wi
rin
g
6
Functi
o
n
s
7
Bef
o
re
Programm
ing
8
C
F
-AD
P
Appl
ied
Ins
tructi
ons
Explanati
o
n
9
Program
Examples
10
T
roubl
esho
oti
n
g
7.1.7
FIFO file
When the file ID is set to "K0", the CF-ADP creates FIFO files.
The CF-ADP creates multiple FIFO files, and executes FIFO (first in, first out) in units of files for the CF-ADP.
With the FIFO function, the CF-ADP keeps the latest data, and deletes old data so that the total capacity of
FIFO files and other files do not exceed the specified CompactFlash
TM
card use ratio.
• When created files does not exceed the CompactFlash
TM
card capacity (specified CompactFlash
TM
card
use ratio)
The CF-ADP creates files whose name consists of a consecutive number in ascending order in the way
"FILE0000.CSV, FILE0001.CSV ••• FILE0999.CSV". When the file name reaches "FILE0999.CSV", the
CF-ADP deletes the oldest existing file "FILE0000.CSV", and creates a new file "FILE0000.CSV".
FIFO file creation
• When created files exceed the CompactFlash
TM
card capacity (specified CompactFlash
TM
card use ratio)
The CF-ADP creates files whose name consists of a consecutive number in ascending order starting from
"FILE0000.CSV" within the CompactFlash
TM
card capacity. When created files reach the CompactFlash
TM
card capacity, the CF-ADP deletes the oldest existing file, and creates a new file.
FIFO file creation
Caution
1) The CF-ADP can create up to 1000 files
However, make sure that created files do not exceed the CompactFlash
TM
card capacity (specified
CompactFlash
TM
card use ratio).
2) The file name is fixed to "FILE0000.CSV" to "FILE0999.CSV".
FILE0000.CSV
FILE0000.CSV
FILE0001.CSV
FILE0002.CSV
FILE0998.CSV
FILE0999.CSV
FIFO file
FIFO file
FILE0000.CSV
FIFO file
FILE0000.CSV
FILE0001.CSV
FIFO file
FILE0000.CSV
FILE0001.CSV
FILE0002.CSV
FIFO file
FILE0000.CSV
FILE0001.CSV
FILE0002.CSV
FILE0998.CSV
FILE0999.CSV
FIFO file
FILE0001.CSV
FILE0002.CSV
FILE0998.CSV
FILE0002.CSV
Delete
FILE0000.CSV
Delete
FILE0001.CSV
Delete
FILE0005.CSV
FILE0000.CSV
FILE0001.CSV
FILE0002.CSV
FILE0003.CSV
FILE0004.CSV
FIFO file
FIFO file
FILE0000.CSV
FIFO file
FILE0000.CSV
FILE0001.CSV
FIFO file
FILE0001.CSV
FILE0002.CSV
FIFO file
FILE0002.CSV
FILE0003.CSV
FILE0004.CSV
FIFO file
FILE0003.CSV
