January 2012 6.10 Axis Error Compensation 707
6.10.1 Backlash compensation
The parameter object CfgAxisComp is not required for:
Virtual axes (MP_axisMode=Virtual)
Axes that are for display only (MP_axisMode=Display)
Cause outside of
the control loop
During a reversal in axis direction, there is often a little play between the rotary
encoder and table. This play is referred to as backlash.
If the distance is measured using a speed encoder, the backlash
compensation compensates the play between the rotary encoder and the
table.
Positive backlash: The rotary encoder reading is ahead of the table. The table
traverse is too short.
Negative backlash: The rotary encoder reading is behind the table. The table
traverse is too long.
Settings in the configuration editor MP number
Axes
ParameterSets
[Key name of the parameter set]
CfgAxisComp
backLash
filterTime
posCtrlRevErr
posCtrlRevErrTime
401802
401805
401806
401807
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