Mitsubishi Electric MELSEC IQ-R series Reference Manual page 481

Examples of device access in binary code (Format 5, 4C frame)
The following shows the setting example when using a command for format 5 and 4C frame.
■Device reading
• Format 5 (sum check enabled), 4C frame
• Access target: QCPU of the connected station (host station)
• Command: Batch read in word units (command: 0401)
• Device: M100 to M131 (for 2 words)
1.
Read values from devices.
Request message
Control code Number of data
*1
bytes
DLE STX 18 bytes
10H 02H 12H 00H

The subtotal of the additional value of binary data = 30BH
Request data
Command Subcommand
0401 0000
01H 04H 00H 00H
The subtotal of the additional value of binary data = FBH
*1 Frame ID No. (1 byte) + Access route (7 bytes) + Request data (10 bytes)
*2 The addition result of the sum check range: 30BH + FBH = 406H
2.
Receive the result.
Response message (Normal completion: Response data)
Control code Number of data
*1
bytes
DLE STX 16 bytes
10H 02H 10H 10H 00H
*2
 
The subtotal of the additional value of binary data = 309H
Response ID Normal
code completion code
FFFFH 0000H
FFH FFH 00H 00H
The subtotal of the additional value of binary data = 246H
*1 Frame ID No. (1 byte) + Access route (7 bytes) + Response ID code (2 bytes) + Normal completion code (2 bytes) + Response data (4
bytes)
*2 Additional code. Calculate the sum check code except for the additional code. (Page 35 Additional code (10H))
*3 The addition result of the sum check range: 309H + 246h = 54FH
*4 The value of read data corresponds to the access target device as follows.
34 12 02
H H
3 4 1 2
0 0 1 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
M107 M100 M115 M108 M123
to to
Frame ID Access route
No.
Station Network No.
No.
4C frame Host station
F8H 00H 00H
Head device Device code
number
100 M
64H 00H 00H 90H
Frame ID Access route
No.
Station Network No.
No.
4C frame Host station
F8H 00H 00H
Response data (read data)
M100 to M115
34H 12H
00
H H
0 2 0 0
0 = OFF
1 = ON
M116 M131 M124
to to
PC No. Request
destination
module I/O No.
FFH FFH
Control code
Number of
device points
2 DLE
02H 00H 10H

PC No. Request
destination
module I/O No.
FFH FFH
*4
Control code
M116 to M131 DLE
02H 00H 10H

Request Self-
destination station
module station No.
No.
03H 00H 00H
Sum check code
ETX 0 6
03H 30H 36H

Request Self-
destination station
module station No.
No.
03H 00H 00H
Sum check code
ETX 4 F
03H 34H 46H

APPENDICES APPENDIX
Appendix 7 Setting Examples
*2
A
*3
479