Mitsubishi Electric MELSERVO-J4 Instruction Manual page 9

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
(5) Stop system (only for MR-J4W_-_B_)
This means target axis to stop when the alarm occurs.
Each axis: Only alarming axis will stop.
All axes: All axes will stop.
(6) Alarm code (only MR-J4-_A_(-RJ)/MR-J4-DU_A_(-RJ))
To output alarm codes, set [Pr. PD34] to "_ _ _ 1" when using an MR-J4-_A_(-RJ)/MR-J4-DU_A_(-RJ).
Alarm codes are outputted by on/off of bit 0 to bit 2. Warnings ([AL. 90] to [AL. F3]) do not have alarm
codes. The alarm codes in the following table will be outputted when they occur. The alarm codes will
not be outputted in normal condition.
When using an MR-D01 extension IO unit, you can output alarm codes by setting [Pr. Po12] to "_ _ _ 1".
Alarm codes are outputted by on/off of bit 0 to bit 3.
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