
B-63944EN/02 OPERATION 12.SETTING AND DISPLAYING DATA
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• Travel distance per revolution of pitch error compensation of the
rotary axis type (for each axis): Parameter 3625
- Bi-directional pitch error compensation
The bi-directional pitch error compensation function allows
independent pitch error compensation in different travel directions.
(When the movement is reversed, compensation is automatically
carried out as in a backlash.)
To use this function, specify pitch error compensation for each travel
direction, that is, separately for the positive and negative directions of
a movement.
When using bi-directional pitch error compensation (setting the
parameter BDP (No. 3605#0) to 1), specify the following parameters
in addition to the pitch error compensation parameter.
• Number of the pitch error compensation point at the negative end
(for travel in the positive direction, for each axis): Parameter
3621
• Number of the pitch error compensation point at the positive end
(for travel in the positive direction, for each axis): Parameter
3622
• Number of the pitch error compensation point at the negative end
(for travel in the negative direction, for each axis): Parameter
3626
• Pitch error compensation in the reference position when moving
to the reference position from opposite to the reference position
return direction (for each axis) Parameter 3627
Procedure for displaying and setting the pitch error compensation data
Procedure
1 Set the following parameters:
• Number of the pitch error compensation point at the
reference position (for each axis): Parameter 3620
• Number of the pitch error compensation point having the
smallest value (for each axis): Parameter 3621
• Number of the pitch error compensation point having the
largest value (for each axis): Parameter 3622
• Pitch error compensation magnification (for each axis):
Parameter 3623
• Interval of the pitch error compensation points (for each
axis): Parameter 3624
• Travel distance per revolution of pitch error compensation
of the rotary axis type (for each axis): Parameter 3625
When using bi-directional pitch error compensation (setting the
parameter BDP (No. 3605#0) to 1), specify the following
parameters in addition to the pitch error compensation parameter.
• Number of the pitch error compensation point at the
negative end (for travel in the positive direction, for each
axis): Parameter 3621