Mitsubishi Electric MELSEC IQ-R series Reference Manual page 205

File name of MELSEC-Q/L series module (Number of characters and file name)
For the data other than response data of read directory/file information (command: 1810), specify with number of characters
and file name character string.
Use the subcommand '0000' or '0004'.
The file name and the extension are specified as a variable length character string with a period inserted between them.
Specify the length of character string with "number of characters". (Page 200 Number of characters)
ASCII code
Number of characters File name + "." + Extension
(4 digits) (Variable length)
Specify "File name" + "Period (2EH)" + "Extension" in ASCII code during data communication in binary code as well.
Ex.
File name and the extension are "ABC.QPG". (7 characters including a period)
ASCII code
0 0 0 7 A B C
30 30 30 37 41 42 43
H H H H H H
Binary code
Number of characters
(2 bytes)
Binary code
. Q P G
07 00
2E 51 50 47
H H H H H H
File name + "." + Extension
(Variable length)
A B C . Q P G
41 42 43 2E 51 50 47
H H H H H H H
12.3 Data to be specified in commands
H
12 FILE CONTROL
12
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