Mitsubishi Electric MELSEC IQ-R series Reference Manual page 319

Communication example
Read the file No. usage in the following conditions.
• Drive name: 1 (RAM area of memory card A)
■Data communication in ASCII code
(Request data)
Subcommand
(Response data)
File No. usage status (64 characters)
No.1 to 8 No.9 to No.248
■Data communication in binary code
(Request data)
Setting
flag
Keyword
Subcommand
(Response data)
File No. usage status (32 bytes)
No.1 to 8 No.9 to No.248 No.249 to 256
Keyword Setting flag
No.249 to 256
Drive name
Drive name
15 QnACPU DEDICATED COMMANDS
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15.3 File Control