Appendix; Appendix 1 Read/Write By Device Extension Specification - Mitsubishi Electric MELSEC IQ-R series Reference Manual

APPENDIX

Appendix 1
Accesses shown below are available by setting the subcommand in a request data to 008 or 00C0.
• Accessing link direct devices
• Accessing module access devices
• Accessing CPU buffer memory access devices
• Accessing by indexing network No. and the start input/output number
• Accessing by indexing the device number
• Accessing by specifying the device number with the value stored in word device with indirect specification
Device specification method for device extension specification
Replace the device portion in a message format of each command with a message format for extension specification
described in this section when the extension is specified.
When extension is
not specified
When extension is
specified
When extension is not
specified
When extension is
specified
With commands which can specify more than one device, the devices listed in the following section can be
accessed by specifying '0' for "Extension specification", "Extension specification modification", "Direct
memory specification".
Page 70 Device code list
However, when 008 or 00C0 is specified by "Subcommand", specify the device in the message format
shown in this section. Message formats with extension not specified and message formats with extension
specified cannot coexist in the same message.
APPENDICES APPENDIX
438

Appendix 1 Read/Write by Device Extension Specification

Read/Write by Device Extension
Specification
ASCII
Command Subcommand
Indirect Extension
specification specification
Binary
Subcommand
Command Device number
Device
Device
modification
Device number
Indirect code
specification
Device
Device number
code
Extension
Device
specification
code
modification
Number of
Device
device
code
points
Extension
Extension
Direct memory specification
specification
specification
modification
Number of
device points
Device
Device number
modification