Panasonic FP7 Series Command Reference Manual

Example 3) When reading data from a file "\abc\data1.txt" specifying the 10th byte
from the head of the file for the reading position
","
"a"
"b"
"c"
","
"a"
"x"
"t"
"."
"t"
"a"
"1"
High
DT0
DT1
DT2
DT3
DT4
DT5
[S1] …DT0
Byte address
Low
"¥"
"a"
"d"
"t"
"¥"
"b"
U14
"a"
"c"
DT6
[D1] …DT100 [D2] …DT50
DT7
Contents of file "data1.txt"
12345678 + CRLF
a,ab,abc,abcd,abcde + CRLF
：Position of file pointer
DT100
DT101
DT102
DT103
DT104
DT105
DT106
DT107
DT108
DT109
H 0000
H 0000
H 0000
H 0000
H 0000
H 0000
H 0000
H 0000
H 0000
H 0000
DT50
DT51
DT52
DT53
DT54
H 0000000A
U10
H 0000
H 0000
・・・ Position of 9th byte
from the head of file
・・・ Max. size: 10 bytes
・・・
Reserved for system
DT50
DT51
DT52
DT53
DT54
H 00000014
U10
H 0000
H 0000
・・・ Read data
Reading position at the end
High
DT100
DT101
DT102
DT103
DT104
DT105
Low
"a"
"a"
","
"b"
U10
DT106
DT107
H 0000
12345678 + CRLF
a,ab,abc,abcd,abcde + CRLF
Contents of file "data1.txt"
Byte address
H 0000
H 0000
DT108
DT109
H 0000
[i] …STR
DT8
H 0000
■
Precautions for programming
● Also refer to section "19.9 Common Precautions for SD Memory Card Access Instructions".
● The SD memory card access instruction active flag (SR3A) turns ON after the execution
condition has turned ON until the completion of the execution of the instruction. During this
time other SD memory card access instructions cannot be executed.
● During the execution of the CRD1 instruction, data read from the SD memory card is written
from the beginning of the specified data device area in order. Therefore, until this instruction
is complete, do not read data within the range of the data device specified to store the data.
18.9 CRD1 (One Line Read from File)
18-46 WUME-FP7CPUPGR-12

Panasonic FP7 Series Specifications

General

Brand	Panasonic
Model	FP7 Series
Category	Controller
Language	English