Mitsubishi Electric MELSERVO-J4 Instruction Manual page 106

4. HOW TO USE THE POINT TABLE
(b) Automatic continuous positioning operation
By merely selecting a point table and switching on ST1 (Forward rotation start) or ST2 (Reverse
rotation start), the operation can be performed in accordance with the point tables having
consecutive numbers.
1) Absolute value command method ([Pr. PT01] = _ _ _ 0)
By specifying the absolute value command or the incremental value command in the sub function
of the point table, the automatic continuous operation can be performed.
The following shows how to set.
a) Positioning in a single direction
The following shows an operation example with the set values listed in the table below.
In this example, point table No. 1 and point table No. 3 are under the absolute value command
method, and point table No. 2 is under the incremental value command method.
Point table Position data
STM
No. [10 μm]
1 5.00
2 5.00
3 15.00
Note. Always set "0" or "2" to the sub function of the last point table among the consecutive point tables.
0: When using the point table under the absolute value command method
2: When using the point table under the incremental value command method
Forward rotation
Servo motor speed
0 r/min
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
Dwell
When position data is absolute value
1 or more
Acceleration
Servo motor
time constant
speed [r/min]
[ms]
3000 100
2000 150
1000 300
Acceleration/deceleration time
constant of point table No. 1
Speed
(3000)
Dwell time
100 ms
0
ON
OFF
Point table setting
Sub function
1
Deceleration
time constant Dwell [ms]
[ms]
150 100
200 200
100 Disabled
Acceleration/deceleration time
constant of point table No. 2
Speed
(2000)
5.00
5.00
1
4 - 19
When position data is incremental
value
3
Sub function M code
1
3
0 (Note)
Acceleration/deceleration time
constant of point table No. 3
Speed (1000)
Dwell time
200 ms
10.00 15.00
05
10
15
1
05