
B-63783EN-1/01 1.AXIS CONTROL
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1.3.11 Smooth Backlash Compensation
Overview
Ordinary backlash compensation outputs all backlash compensation
pulses at a point where the direction of axis movement is reversed. (Fig.
1.3.11(a))
Axis movement
direction
(Direction reversed)
Total amount of backlash compensation
after the direction is reversed
Amount of movement after the
direction of axis movement is
reversed
0
Parameter 1851
Fig. 1.3.11(a) Ordinary Backlash Compensation
The number of compensation pulses output by smooth backlash
compensation varies according to the distance form a point where the
direction of axis movement is reversed. So, backlash compensation can
be made precise and matches the characteristics of the machine. (Fig.
1.3.11(b))
Axis movement
direction
(Direction reversed)
Total amount of backlash compensation
after the direction is reversed
Amount of movement
after the direction is
reversed
0
B2 (parameter 1851)
B1 (parameter 1848)
L1
(Parameter
1846)
L2
(Parameter
1847)
Fig. 1.3.11(b) Smooth Backlash Compensation
This function is enabled by setting parameter SBL (bit 6 of parameter
No. 2603) to 1.