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3.6 VARIOUS OPERATIONS AND FUNCTIONS
(Cont'd)
3.6.12.2
Pitch
error
compensation
This is
a
function that
automatically
corrects
ball
.
screw errors
in
accordance with correction data for each fixed distance from
a
reference
point on
each axis.'
This function becomes valid after completion. of reference
point
return.
(1)
The
specifications-
are
as
follows.
Table 3.6.4
X,
Y. Z. 4th
(including
rotary
axis),
and 5th axes
(including
rotating
axis)
Corrected axes
Number
of offset points
-
Up
to
1152 for all
axes
Offset reference
point
Reference
point
Offset
interval
Over
lOO(n)
pulses
Absolute/incremental
(Parameter
PmtJOOl DO
changeover)
Data
setting
method
Minimum offset
unit
1 pulse
(
= Least
output
unit)
Offset
amount
Offset
amount
each time
Max. 127 pulses
NOTE
1. The
maximum
setting
valueis 127
pulses
in the case of absolute
settings.
This is then
multiplied
by
the offset
multiple.
2. Allocation of thenumber of
points per
axis is
optional if the
total number
of correction
points
is within 1152.
3. If the 4th and 5th axes
are rotating axes, operation
is possible within
a
maximum of
±
200 rotations.
4.
Pitch
error valid 'invalid is available for
each
axis of
a
parameter.
Pm
6000 DO
to D4(X,
Y, Z,
4th.
and
5th
axes).
5. Set correction
amount
at
each axis base
point
to"0'\
-
634
-
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