Search Directory/File Information (Command: 1811) - Mitsubishi Electric MELSEC IQ-R series Reference Manual

Search directory/file information (command: 1811)

Read the file No. of the specified file.
The file No. indicates the registration number of a file when the file is written to the module.
Message format
The following shows the message format of the request data and response data of the command.
■Request data
Command Subcommand
■Response data
File No. is stored. (Page 199 File No.)
If the file with the specified name does not exist, the command completes abnormally.
Data specified by request data
■Command
ASCII code
1 8 1 1
31 38 31 31
H H H H
■Sub command
Item
For MELSEC-Q/L series
For MELSEC iQ-R series
■Fixed value 1
Specify the following fixed value.
• MELSEC iQ-R series (when using subcommand '0040'): Specify '0'.
ASCII code
0 0 0 0
30 30 30 30
H H H H
• MELSEC-Q/L series (when using subcommand '0000'): Specify 20H in 4 bytes.
ASCII code, binary code
20 20 20 20
H H H H
■Drive No.
Specify the access target drive. (Page 198 Drive No.)
Fixed values 1 Drive No.
Binary code
11 18
H H
ASCII code
0 0 0 0
30 30 30 30
H H H H
0 0 4 0
30 30 34 30
H H H H
Binary code
00 00 00 00
H H H H
Number of file
Fixed values 2
name characters
Binary code
00 00
H H
40 00
H H
File name
12 FILE CONTROL
217
12.4 File Check
12