Accessing Devices For Indirect Specification - Mitsubishi Electric MELSEC IQ-R series Reference Manual

Accessing devices for indirect specification

Access the device corresponding to the address stored in the word device (2 points).
Store the address of the access target device in the device for the indirect specification, and represent the data as '@ + device
for indirect specification'.
Indirect Device
Device number
specification code
@
+
Z
Device modification
For details on the indirect specification, refer to the following manual.
 MELSEC iQ-R CPU Module User's Manual (Application)
The following device access commands can be used for access.
Function
Random read
Random write
Register monitor data
Message format for device extension specification
■Data communication in ASCII code
Subcommand type ASCII code
For MELSEC-Q/L series
0
30 40
H
For MELSEC iQ-R series
0 @
30 40
H
■Data communication in binary code
Subcommand type Binary code
For MELSEC-Q/L series
H
For MELSEC iQ-R series
H
Command
0403
1402
0801
@ 0 0 0 0 0 0 0
30 30 30 30 30 30 30
H H H H H
H H
0 0 0 0 0 0 0 0
30 30 30 30 30 30 30 30
H H H H H H H H
Device Device
number code
8 00 00
H H
H
Indirect specification
Device modification
Device
Device number
code
8
00
H
H
Indirect specification
Device modification
Subcommand
0080, 0082, 00C0
0080, 0082
0080, 0082, 00C0
Device
Device number
code
H
Device code
H
00 00 00
H H H
00 00 00 00
H H H H
Appendix 1 Read/Write by Device Extension Specification
Device
modification
Device number Device modification
APPENDICES APPENDIX
A
451