File Check; Read Directory/File Information (Command: 1810) - Mitsubishi Electric MELSEC IQ-R series Reference Manual

12.4

File Check

Read directory (folder), file name, file creation date and time, and file No. in the specified drive.
The presence of files to be accessed and the file No. to access can be checked.

Read directory/file information (command: 1810)

For the specified storage destination file, read the file name, file creation date and time (last edit date and time) etc.
Read the file information from the head file specified with the file No. to the specified number of files.
Message format
The following shows the message format of the request data and response data of the command.
■Request data
Command Subcommand
■Response data
Number of file
Last file No.
information
(n points)
Data specified by request data
■Command
ASCII code
1 8 1 0
31 38 31 30
H H H H
*1 For C24, the additional code may be added. (Page 35 Additional code (10H))
■Sub command
Item
For MELSEC-Q/L series
For MELSEC iQ-R series
Fixed values Drive No.
Last edit
File File size
date and
time
Directory/file information(1st point)
*1
Binary code (for C24)
DLE
10 10 18
H 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
Number of
Head file No.
requested files
Last edit
File
date and
time
Directory/file information(nth point)
Binary code (for E71)
10 18
H H
Binary code
00 00
H H
40 00
H H
Directory
specification
File size
12 FILE CONTROL
211
12.4 File Check
12