
OPERATION11. SETTING AND DISPLAYING DATA
B–64114EN/01
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The bidirectional 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 bidirectional pitch error compensation (setting the BDP bit
(bit 0 of parameter 3605) to 1), specify the following parameters in
addition to the pitch error compensation parameter.
D Number of the pitch error compensation point at the negative end (for
travel in the positive direction, for each axis): Parameter 3621
D Number of the pitch error compensation point at the positive end (for
travel in the positive direction, for each axis): Parameter 3622
D Number of the pitch error compensation point at the negative end (for
travel in the negative direction, for each axis): Parameter 3626
D Pitch error compensation at the reference position when travel is made
to the reference position from the direction opposite to the reference
position return direction (absolute value, for each axis): Parameter
3627
Procedure for displaying and setting the pitch error compensation data
1 Set the following parameters:
D Number of the pitch error compensation point at the reference
position (for each axis): Parameter 3620
D Number of the pitch error compensation point having the smallest
value (for each axis): Parameter 3621
D Number of the pitch error compensation point having the largest
value (for each axis): Parameter 3622
D Pitch error compensation magnification (for each axis): Parameter
3623
D Interval of the pitch error compensation points (for each axis):
Parameter 3624
D Travel distance per revolution of pitch error compensation of the
rotary axis type (for each axis): Parameter 3625
When using bidirectional pitch error compensation (setting the BDP bit
(bit 0 of parameter 3605) to 1), specify the following parameters in
addition to the pitch error compensation parameter.
D Number of the pitch error compensation point at the negative end (for
travel in the positive direction, for each axis): Parameter 3621
D Number of the pitch error compensation point at the positive end (for
travel in the positive direction, for each axis): Parameter 3622
D Number of the pitch error compensation point at the negative end (for
travel in the negative direction, for each axis): Parameter 3626
Bidirectional pitch error
compensation