Specifications

4 - 10
4.2.5 Zero point return data
The data to be set is shown below.
Setting range Default
mm inch degree PULSENo. Item
Setting range Units Setting range Units Setting range Units Setting range Units
Initial value
Remarks
A DIRECTION
0: REVERSE (CW)
1: FORWARD (CCW)
0
• Sets the direction for zero point return.
• Moves in the designated direction when
zero point return is started.
B METHOD
0: Near-zero point dog method
1: Count method
2: Data set method 1
3: Data set method 2
0
• Sets the zero point return method.
• The near-zero point dog method or count
method is recommended for a servo
amplifier which does not support absolute
data, and the data set method is
recommended for a servo amplifier which
supports absolute data.
C ADDRESS
–2147483648
to 2147483647
×10
–1
µm
–2147483648 to
2147483647
×10
–5
inch
0 to 35999999
×10
–5
degree
–2147483648
to 2147483647
PLS 0
• Sets the present value of the zero point
after zero point return.
D SPEED
0.01 to
6000000.00
mm/
min
0.01 to
600000.000
inch/
min
0.001 to
2147483.647
degree/
min
1 to 1000000
PLS/
s
1
• Sets the speed for zero point return.
E
CREEP
SPEED
0.01 to
6000000.00
mm/
min
0.001 to
600000.000
inch/
min
0.001 to
2147483.647
degree/
min
1 to 1000000
PLS/
s
1
• Sets the creep speed (low speed
immediately before stopping after
deceleration from zero point return speed)
after the near-zero point dog.
F
MOVEMENT
AFTER DOG
0 to
214748364.7
µm
0 to
21474.83647
inch
0 to
21474.83647
degree
0 to
2147483647
PLS 0
• Sets the movement amount after the near-
zero point dog for the count method.
• Set greater than the deceleration distance
at the zero point return speed.
G P.B. NO. 1 to 64 1
• Sets the parameter block to use for zero
point return (see Section 4.2.7).
* Zero point return is executed with the following servo program example.
Servo program No.1
The zero point return axis is axis 1
Zero point
return direction
Zero point
return speed
Creep speed
End
point
t
Near-point
dog
Start
point
Zero speed
Moves to the next zero point after the near-
point dog turns OFF.
Zero point
return direction
Zero point
return speed
Creep speed
End
point
t
Near-point
dog
Start
point
Zero speed
Count
Moves to the next zero point after the
count.
The stopped position
is the zero point.
Near-point dog is not required.
The actual motor
position is the zero
point.
Near-point dog is not required.
(Suitable for stopper type)
Examples
Near-point dog method
Count method
<K 1>
ZERO
Axis 1
Data set method 1 Data set method 2