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6 SERVO MOTOR DRIVING
6.2 Point table mode (pt)
Automatic repeat positioning operation
By setting the auxiliary function of the point table, the sequence of operation patterns arranged on the point table can be
restarted, enabling repetitive positioning operation.
■
Absolute value command method ([Pr. PT01] = _ _ _ 0)
Setting "8" or "10" to the auxiliary function performs an automatic continuous operation or a 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 auxiliary function performs an automatic continuous operation or a 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.
• Automatic repeat positioning operation by absolute value command method
Example 1. Operations when "8" is set to the auxiliary function of point table No. 4
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 auxiliary 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)
*1 "Point actual value" is not outputted in automatic continuous operation.
Point table No.
Position data
[10
STM
μ
m]
Servo motor
speed [r/min]
Acceleration
time constant
[ms]
Deceleration
time constant
[ms]
Dwell [ms]
Auxiliary
function
1
4.00
1500.00
200
100
150
1
2
5.00
3000.00
100
150
100
1
3
5.00
2000.00
150
200
200
3
4
15.00
1000.00
300
100
150
8
5.00
1)
2)
3)
4)
0
5.00
10.00
15.00
2
0 r/min
Target point table
ON
OFF
Point actual value
*1
ON
OFF
ON
OFF
ON
OFF
Controlword bit 4
(New set-point)
INP/S_INP
Status DO 5 bit 5
Status DO 5 bit 6
Point table No. 2
Point table No. 3
Point table No. 4
Speed
(3000.00)
Speed
(2000.00)
Forward
rotation
Speed (1000.00)
Servo motor speed
Reverse
rotation
Speed
(3000.00)
Point table No. 2
Position address
(In-position)
(S_CPO (Rough match))
(S_MEND (Travel completion))
