
B-63783EN-1/01 1.AXIS CONTROL
- 35 -
Explanation
- Specifying the compensation position
To assign the compensation positions for each axis, specify the positive
direction or the negative direction in reference to the compensation
position No. of the reference position. If the machine stroke exceeds
the specified range on either the positive direction or the negative
direction, the pitch error compensation does not apply beyond the
range.
- Compensation position number
1280 compensation positions from No. 0 to 1279 are available on the
pitch error setting screen. When a system with 11 or more controlled
axes is used, a total of 3072 points (from 0 to 3071) are available.
Assign arbitrary positions for each axis using parameters. The number
of the compensation position at the reference position (parameter 5420),
number of the compensation position having the smallest value
(parameter 5421), and number of the compensation position having the
largest value (parameter 5422) must be set for each axis.
Example
- For linear axis
- Machine stroke: -400 mm to +800 mm
- Interval between the pitch error compensation positions: 50 mm
- No. of the compensation position of the reference position: 40
If the above is specified, the No. of the farthest compensation position
in the negative direction is as follows:
No. of the compensation position of the reference position- (Machine
stroke on the negative side/Interval between the compensation
positions) + 1= 40 - 400/50 + 1= 33
No. of the farthest compensation position in the positive direction is as
follows:
No. of the compensation position of the reference position +
(Machine stroke on the positive side/Interval between the
compensation positions)= 40 + 800/50= 56
The correspondence between the machine coordinate and the
compensation position No. is as follows:
33 39 40 41 42 56
-400 -350 -100 -50
0
50 100 750 800
Machine
coordinate
mm
Compensati
on position
number.
Compensation values are output at the positions indicated by .