File Pointer No; Offset Address - Mitsubishi Electric MELSEC IQ-R series Reference Manual

File pointer No.

This is a number for CPU module to manage files.
The file pointer No. can be acquired with the following command.
Page 236 Open file (command: 1827)
Setting method
■Data communication in ASCII code
*1
Send 4-byte ASCII code data.
■Data communication in binary code
*1
Send 2-byte numerical value.
*1 For C24, the additional code may be added. (Page 35 Additional code (10H))
Ex.
For AH
ASCII code
0 0 0 A
30 30 30 3A
H H H H

Offset address

Specify the address (one address/one byte) from the head (offset address: 0H) of each file with an even number.
Offset address
0
(File size) - 1
Setting method
■Data communication in ASCII code
Convert the numerical value to 8-digit ASCII code (hexadecimal), and send it from the upper digits.
■Data communication in binary code
Send 4-byte numerical values
*1 For C24, the additional code may be added. (Page 35 Additional code (10H))
Ex.
Offset address is 780H(1920)
ASCII code
0 0 0 0 0
30 30 30 30 30
H H H H
12 FILE CONTROL
208
12.3 Data to be specified in commands
Binary code
0A
H
Data
*1
from the lower byte (L: bits 0 to 7).
Binary code
7 8 0
37 38 30 80
H H H H H
00
H
07 00 00
H H H