3.6
Electronic Gearing
By correctly setting the ball screw lead, step-down ratio, step-up ratio, and
detector resolution,
it is possible to make amounts of machine movement consis-
tent with those
ment is termed
Parameters
SVOOl
:
svoo2
:
required by commands.
The matching of these
two
amounts of
move-
electronic gearing
and determined by the following parameters:
Related to Electronic Gearing:
PC1
SVOl.8
:
PIT
PC2
svo19
: RNGl
svo20
: RNG2
Set the machine constant such that the reduced numerator and denominator
are less than
32767.
If this condition is not satisfied, an alarm 37,
abnormal parameter number 2301 (101 with M500-type
NCs)
will be output.
ELGl
<
32767, ELG2
<
32767
ELGl
is a reduction of
PC2 X RANG
ELG2
PC1 X PIT X
IUNIT
-
Note that RANG = RNGl =
RNG2.
IUNIT is related to the interpolation unit as follows:
0.5
w
:
IUNIT =
2,
0.05
pm
:
IUNIT
=
20
.
.
_.‘.>-..‘$,
BNP-B3882B
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