Mitsubishi Electric MELSERVO-J4 Instruction Manual page 115

4. HOW TO USE THE POINT TABLE
(d) Automatic repeat positioning operation
By setting the sub function of the point table, the operation pattern of the set point table No. can be
returned to, and the positioning operation can be performed repeatedly.
1) Absolute value command method ([Pr. PT01] = _ _ _ 0)
Setting "8" or "10" to the sub function performs automatic continuous operation or varying-speed
operation until that point table, and after the completion of positioning, performs the operation
again from the operation pattern of the point table No. used at start-up.
Setting "9" or "11" to the sub function performs automatic continuous operation or varying-speed
operation until that point table, and after the completion of positioning, performs the operation
again from the operation pattern of point table No. 1.
a) Automatic repeat positioning operation by absolute value command method
Example 1. Operations when "8" is set to the sub function of point table No. 4
Point table Position data
STM
No. [10 μm]
1 4.00
2 5.00
3 5.00
4 15.00
Operation sequence
1) Starting with point table No. 2
2) Executing point table No. 3
3) Executing point table No. 4
4) Executing again point table No.2 used at start-up when "8" is set to the sub function of point
table No. 4
5) Repeating the above execution in the sequence of 2) to 3) to 4) to 2) to 3) to 4)
Forward rotation
0 r/min
Servo motor speed
Reverse rotation
Position address
Point table No. to select
ST1 (Forward rotation start)
PT0 (Point table No. output 1)
to PI7 (Point table No. output 8)
M code output (Note)
Note. PT0 to PT7 and M code are not outputted in automatic continuous operation.
Acceleration
Servo motor
time constant
speed [r/min]
[ms]
1500 200
3000 100
2000 150
1000 300
Point table No. 2
Speed
(3000)
0
ON
OFF
Deceleration
time constant Dwell [ms]
[ms]
100
150
200
100
Point table No. 3
1)
2)
Speed
(2000)
Speed
(3000)
5.00
5.00
4 - 28
Sub function
150 1
100 1
200 3
150 8
Point table No. 4
3)
Speed (1000)
4)
10.00 15.00
2
M code
01
05
10
15
Point table No. 2