
B-63943EN-1/02 1.AXIS CONTROL
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1.3.5 Straightness Compensation at 128 Points
Overview
In straightness compensation, this function sets compensation data as
the compensations at individual compensation points in the same way
as in stored pitch error compensation. This enables fine
compensation to be applied.
Up to six combinations of moving and compensation axes for the
straight compensation function are allowed.
0 1 2 3 4
5
a b c d e ..
60 61 62 63 64 65
.. .. .. .. .. ..
125 122 123
124 126 127
.. .. .. x y z
• Up to 128 compensation points can be set per axis.
• The amount to be set at a single compensation point (a, b, c, ,,, x,
y, z) can be in the range of -127 to +127.
• The method of setting data, as well as the timing of
compensation, is the same as that of pitch error compensation.
• To use this function, the number of pitch error compensation
points on the moving axis must not exceed 128.
• The number of straightness compensation points is the same as
that of stored pitch error compensation points on the moving
axis.
Explanation
・Relationships between pitch error compensation points and straightness
compensation points on a moving axis
The relationships between pitch error compensation points and
straightness compensation points on a moving axis are as shown
below.
α β γ
φ π δ
Stored pitch error compensation points on moving axis
Straightness compensation points on moving axis
α Number of the furthest pitch error compensation point in the
negative region on the moving axis
Parameter No. 3621
β Number of the furthest pitch error compensation point in the
positive region on the moving axis
Parameter No. 3622
γ Pitch error compensation point number of the reference position
on the moving axis
Parameter No. 3620