
1.AXIS CONTROL B-63943EN-1/02
- 48 -
Explanation
- Specifying the compensation position
To assign the compensation positions for each axis, specify the
positive direction or the negative direction relative 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
1536 compensation positions from No. 0 to 1535 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.
- Interval of compensation positions
The pitch error compensation positions are equally spaced to
parameter No. 3624. Set the space between two adjacent positions
for each axis.
The minimum interval between pitch error compensation positions is
limited and obtained from the following equation:
Minimum interval of pitch error compensation positions = maximum
feedrate (rapid traverse rate)/7500
Unit :
Minimum interval of pitch error compensation positions: mm,
inches, deg.
Maximum feed rate: mm/min, inch/min, deg/min
Example)
When the maximum rapid traverse rate is 15000 mm/min, the
minimum interval between pitch error compensation positions is
2 mm.
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: