Mitsubishi Electric MELSEC iQ-R Series - Appendix; Appendix 1 Read;Write by Device Extension Specification

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APPENDICES APPENDIX
Appendix 1 Read/Write by Device Extension Specification
APPENDIX
Appendix 1 Read/Write by Device Extension
Specification
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.
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.
ASCII
Device
code
When extension is
not specified
Device number
Subcommand
Command
Number of
device points
Indirect
specification
Device
code
Device
modification
When extension is
specified
Extension
specification
Extension
specification
modification
Device number
Binary
Subcommand
Device
code
Number of
device
points
Device number
Command
When extension is not
specified
Device
modification
Indirect
specification
Extension
specification
modification
Device
code
Device number
Extension
specification
When extension is
specified
Direct memory specification