Mitsubishi Electric MELSERVO-J4 Instruction Manual page 104

4. HOW TO USE THE POINT TABLE
(3) Automatic operation timing chart
(a) Automatic individual positioning operation
1) Absolute value command method ([Pr. PT01] = _ _ _ 0)
While the servo motor is stopped under servo-on state, switching on ST1 (Forward 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 PI7 (Point
table No. output 8)
RD (Ready)
ALM (Malfunction)
M code output
Note. 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.
ON
OFF
ON
(Note)
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
5 ms or
longer
1
3 ms or shorter
Point table
No. 1
4 - 17
3 ms or
longer
5 ms or
longer
2
Point table
No. 2
1
M code of point table No. 1
2