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3.6.12
Machine and Servo
Systems Correction
Function
3.6.12.1
Backlash correction
Corrects lost motion of the machine
system
(a)
Sub-correction
amount
0
to
±32767
pulses (least
detection
unit)
pm!701
.
X-axis
pm
1702
Y-axis
Parameter
pml703
Z-axis
pm!704
4th axis
pm
1705
5th axis
(b)
Correction
amount
0
to
±32767
pulses (least
output
unit)
pm!551
X-axis
l
pm!552
Y-axis
Z-axis
pml553
Parameter
pml554
4th
axis
pml555
5th
axis
The backlash
correction
amount (least
output
unit)
is
calculated
as
follows.
(The
example
is for the
X-axis.)
Backlash
correction
amount (least output unit)
-
Pml551
+
A
-
When
separate
PG is
not
used.
A
=
L/PG
'
pm
1
701
Where,
L
:
Length
of travel
per
rotation of
motor
(Pml821)
PG
:
Number of
pulses generated
per
rotation of
PG
(Pml071
)
—
When
rotary
encoder is used
for
separate
PG,
A
=
L/ar
'
pml701
Where,
L
:
Length of
travel
per
rotation of
motor (Pml821)
a
: Number
of
pulses generated by
separate
PG
per
rotation of
motor (Pml841)
—When scale feedback is used
for
separate
PG,
A
=
o>/1000 *
Pml701
Where,
a
: Minimum
detection unit of scale feedback
(pml841)
-
633
-
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