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How To Switch J4 Mode/J3 Compatibility Mode - Mitsubishi Electric MELSERVO-J4 Series Transition Handbook

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Part 7: Common Reference Material

6.1.5 How to switch J4 mode/J3 compatibility mode

There are two ways to switch the J4 mode/J3 compatibility mode with the MR-J4-_B_(-RJ) servo amplifier
and MR-J4W2-_B servo amplifier.
(1) Mode selection by the automatic identification of the servo amplifier
J4 mode/J3 compatibility mode is identified automatically depending on the connected controller.
When the controller makes a connection request with SSCNET III/H communication, the mode will be
"J4 mode". For SSCNET communication, it will be "J3 compatibility mode".
For the J3 compatibility mode, standard control will be identified automatically with a motor (encoder)
connected to the servo amplifier. For the J4 mode, the operation mode will be the setting of [Pr. PA01].
Factory setting
J4 mode/J3 compatibility
mode automatic
identification
(2) Mode selection using the application software "MR-J4(W)-B mode selection"
You can set the factory setting, J4 mode/J3 compatibility mode, and operation mode with the dedicated
application.
Application
" MR-J4(W)-B mode
selection tool "
Controller
connection check
J4 mode/J3
compatibilitymode
automatic
identification
Standard control
J4 mode
(rotary servo motor)
J3 compatibility
Standard control
mode
(rotary servo motor)
7 - 137
J4 mode
[Pr. PA01] setting
Connected encoder
J3 compatibility
check (automatic
mode
identification)
Factory setting
Fixed to the J4 mode (Standard control (rotary servo
motor))
Fixed to the J3 compatibility mode (Standard control
(rotary servo motor)) [Equivalent to MR-J3-B]
Standard control
(rotary servo motor)
Standard control
(rotary servo motor)

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This manual is also suitable for:

Melservo-j3 seriesMelservo-j3w series