Mitsubishi Electric MELSEC IQ-R series Reference Manual page 233

■Drive No.
Specify the access target drive. (Page 198 Drive No.)
■Attribute
Specify the file attribute. (Page 205 Attribute)
• Read only: 01H
• Readable, writable: 20H
Do not specify the value other than above since the values are reserved for system use.
■Number of file name characters, file name
Specify the file name to modify attribute. (Page 202 File name specification)
Communication example (files for MELSEC-Q series)
Change the file attribute in the following conditions.
• Password: 1234
• Drive No.: 0
• File name: ABC.QPG
• Attribute: Read only: 01H
■Data communication in ASCII code
(Request data)
Subcommand
1 8 2 5 0 0 0
31 38 32 35 30 30 30
H H H H H H H
■Data communication in binary code
(Request data)
Subcommand Password
1 2 3
25 18 00 00 31 32 33
H H H H H H H
Communication example (files for MELSEC-L series)
Change the file attribute in the following conditions.
• Password: AbCd1234...(24 spaces, code: 20H)
• Drive No.: 0
• File name: MAIN.QPG
• Attribute: Read only: 01H
■Data communication in ASCII code
(Request data)
Subcommand
1 8 2 5 0 0 0
31 38 32 35 30 30 30
H H H H H H H
Number of file
name characters
0 0 0 8 M A
30 30 30 38 4D 41
H H H H H H
■Data communication in binary code
(Request data)
Subcommand
Password (fixed to 32 characters)
A b C
25 18 04 00 41 62 43
H H H H H H H
Password Drive No.
0 1 2 3 4 0 0 0
30 31 32 33 34 30 30 30
H H H H H H H
Drive No. Attribute Number of file name characters
A
4
34 00 00 01 00 07 00 41
H H H H H H H
Password (fixed to 32 characters)
4 A b C d 1 2 3
34 41 62 43 64 31 32 33
H H H H H H H
File name
I N . Q P G
49 4E 2E 51 50 47
H H H H H H
d 1 2 3 4
64 31 32 33 34 20 20
H H H H H H
Attribute Number of file name characters
0 0 0 0 1 0 0
30 30 30 30 31 30 30
H H H H H H H H
File name
B C . Q P G
42 43 2E 51 50 47
H H H H H H H
Drive No.
4 0 0 0
34 20 20 30 30 30
H H H H H H H
Drive No. Attribute Number of file name characters
M
00 00 01 00 08 00 4D
H H H H H H H H
File name
0 7 A B C . Q
30 37 41 42 43 2E 51 50
H H H H H H H
Attribute
0 0 0 0 1
30 30 30 30 31
H H H H H
File name
A I N . Q P G
41 49 4E 2E 51 50 47
H H H H H H H
12 FILE CONTROL
12.6 File Modification
12
P G
47
H H
231