B--63003EN--1/02
1. AXIS CONTROL
32
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.
1024 compensation positions from No. 0 to 1023 are available on the
pitch error setting screen. Assign arbitrary positions for each axis using
parameters.
The number of the compensation position at the reference position
(parameter 3620), number of the compensation position having the
smallest value (parameter 3621), and number of the compensation
position having the largest value (parameter 3622) must be set for each
axis.
The name of each axis is displayed before the smallest compensation
position number on the pitch error setting screen.
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)
Compensation
position number.
Compensation values are output at the positions indicated by .
Explanations
D Specifying the
compensation position
D Compensation position
number
Examp les
D For linear axis