Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 146

4. HOW TO USE THE POINT TABLE
2) Incremental value command method ([Pr. PT01] = _ _ _ 1)
While the servo motor is stopped under servo-on state, switching on ST1 (Forward rotation start)
or ST2 (Reverse rotation start) starts the automatic positioning operation.
The following shows a timing chart.
MD0
(Operation mode selection 1)
SON (Servo-on)
ST1 (Forward rotation start)
ST2 (Reverse rotation start)
Point table No.
Servo motor speed
INP (In-position)
CPO (Rough match)
MEND (Travel completion)
PT0 (Point table No. output 1)
to PT7 (Point table No. output 8)
(Note 2)
RD (Ready)
ALM (Malfunction)
M code output
Note 1. The detection of external input signals is delayed by the set time in the input filter setting of [Pr. PD29].
Considering the output signal sequence from the controller and signal variations due to hardware, configure a
sequence that changes the point table selection earlier.
2. For MR-J4-03A6-RJ servo amplifiers, up to six points of DO are available; therefore, PT0 to PT7 cannot be
outputted simultaneously.
ON
OFF
ON
(Note 1)
OFF
3 ms or
ON
longer
OFF
ON
OFF
Forward rotation
0 r/min
Reverse rotation
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
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3 ms or
5 ms or longer
longer
5 ms or longer
1
3 ms or shorter
Point table
No. 1
M code of point table No. 1
2
Point table
No. 2
1 2