Mitsubishi Electric MR-J5-G User Manual page 55

■Read Object (object read)
This command returns the value of the object corresponding to Index and Sub Index specified by the master station.
• Request message (after the command)
Command Sub command
L H L
20h 40h 01h
• Response message (at normal termination (after the end code))
End code Index
L H L
00h 00h Refer to "Item list" below for details.
• Response message (at abnormal termination)
It is the same as "At abnormal termination" in the reference below.
Page 52 Response message format
• Item list
Item
Command
Sub command
Index
Sub Index
Reserved
Number of data value
Read data
Index
H L
00h Refer to "Item list" below for details.
Sub Index

H
Size Endian
2 bytes Little
2 bytes Little
2 bytes Little
1 byte Little

1 byte
2 bytes Little
Variable Little
Sub Index Reserved
 
H
Reserved Number of data value

L H
Description
4020h
0001h
Specify Index of the object. ( MR-J5-G/MR-J5W-G User's Manual
(Object Dictionary))
The response message stores the value specified in the request message.
Specify Sub Index of the object. ( MR-J5-G/MR-J5W-G User's Manual
(Object Dictionary))
The response message stores the value specified in the request message.
00h (fixed)
Read data: 00h (fixed)
The return data of the object is stored.
Number of data value
L H
Read data
L variable H
1 CC-Link IE TSN
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1.4 APPENDIX
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