Mitsubishi A1SD75M3 User Manual page 195

5 DATA USED FOR POSITIONING CONTROL
Pr.104 Motor capacity
Set any of 1 to 9999 in hexadecimal.
The value is automatically set in the servo amplifier according to the used
servomotor.
POINT
Always set the motor capacity to other than "0".
At the default value "0", operation cannot be performed since communication with
the servo amplifier is not made.
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MELSEC-A