Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 433

Part 7: Common Reference Material
(3) Change MR-J3-_A_/MR-J3-_T_ parameters to MR-J4-_A_(-RJ) parameters.
Select [Parameter] - [Parameter Converter] from the menu to display the parameter converter screen.
Then click the [Open file] button and specify the user file that was saved with the operation in (3) of
Section 2.2.3.
Click [Update Project].
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