Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 238

Part 6: Review on Replacement of MR-J2M with MR-J4
MR-J2M-B
(Drive unit MR-J2M-_DU)
No. Name
34 PI-PID switching position droop
36 Speed differential compensation
38 Encoder output pulses
40 DRU parameter writing inhibit
MR-J4-_B_
No. Name
Speed differential
PB11
compensation
PA15 Encoder output pulse
PA19 Parameter writing inhibit
6 - 19
Note
No corresponding parameter
Max. output frequency is different.
Change the setting value as necessary.