Mitsubishi Electric MELSERVO-J4 Instruction Manual page 410

11. PARAMETER UNIT
(2) Message
Display
A parameter which was enabled at power-off was written.
A station No. was set to transit using the parameter unit during
the test operation mode.
The test operation has not been released.
The test mode was changed due to external factor.
An invalid parameter to read in [Pr. PA19 Parameter writing
inhibit] was attempted to read.
In the test operation, the "ESC" key was pressed while the "Fn"
key was pressed down to switch the screen to the parameter unit
setting screen.
RD (Ready) cannot be turned on due to alarm, etc.
The mode was attempted to be the test operation mode at servo-
on.
A station No. was attempted to change during the test operation.
A point table No. was attempted to change during the single-step
feed operation.
A point table No. was attempted to set to the servo amplifier
other than point table method was selected.
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Description