Appendix; Appendix 1 Device Memory Extension Specification; Access To Module Access Device - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

APPENDIX

Appendix 1
The following accesses are available by setting the subcommand of request data to 008.

• Access to module access device

• Access with indirect specification of the device No. by using index register or long index register
• Access with indirect specification of the device No. by using values stored in word device
Access to module access device
Access to the buffer memory of SLMP compatible devices or intelligent function modules.
Request data
ASCII
When extension is
not specified
When extension is specified
Binary
When extension is
not specified
When extension is
specified
The following shows the module access device and request data.
U G
\
Device code
Extension
specification
Devices described in Page 44 In the case of FX5CPU can be accessed by specifying 0 in "extension
specification" of commands which can specify multiple devices. However, when specifying 008 in
"subcommand", specify the device in the message format shown above. Message formats when extension is
not specified and message formats when extension is specified cannot coexist in the same message.
APPENDIX
94

Appendix 1 Device Memory Extension Specification

Device Memory Extension Specification
Command Subcommand
Extension
0 0
specification
30 30
H H
Head device No.
Command Subcommand
or device No.
Head device No.
Device
or device No.
code
00 00
H H
Head device No.
or device No.
Device Head device No.
code or device No.
Device
0 0 0
code
30 30 30
H H H
Device Number
code of devices
Extension
specification
00 00 F9
H H H
Number of devices
Head device No.
0 0
or device No.
30 30
H H
0
30
H