Mitsubishi Q170MCPU User Manual page 195

APPENDICES
2) Device comment
The device comment data is allocated in the Multiple CPU high speed
transmission area setting for the positioning dedicated signal.
The device can be used while confirming the comment to execute the
control for the Motion CPU area in the PLC CPU area.
a) Select the device comment "COMMENT" on the copy screen
displayed by [Project] – [Copy] of menu bar of device comment.
Select the "COMMENT"
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