CNC Setup Utility Manual
P/N 70000490C - Machine Constants
All rights reserved. Subject to change without notice.
10-December-04
2-49
Table 2-2, Machine Constants Setup
(Continued)
Machine Constant
Parameter
Function Settings
Backlash Compensation Setup Parameters
MC_3030:
Backlash
compensation
Backlash is the loss of motion that
occurs when the encoder reverses
direction and begins to record motion
before the table actually moves.
Backlash compensation takes this lag
into account and corrects the move. All
systems that move mass under control
exhibit backlash. Some of the causes
are structural component flexing,
bearing end thrust, and wind-up of the
ballscrew that drive the slide.
On (enabled)
Off
(disabled) [Default]
Switch
On
to activate
compensation entered. The CNC
activates the backlash
compensation for all selected axes.
MC_3031:
X Backlash
compensation
Measure X-axis backlash and type the
value. When backlash compensation
activates, the CNC automatically
calculates the necessary motion
corrections.
Range (0.0000–9.0000)
0.0000 [Default]
MC_3032:
Y Backlash
compensation
Measure Y-axis backlash and type the
value. When backlash compensation
activates, the CNC automatically
calculates the necessary motion
corrections.
Range (0.0000–9.0000)
0.0000 [Default]
MC_3033:
Z Backlash
compensation
Measure Z-axis backlash and type the
value. When backlash compensation
activates, the CNC automatically
calculates the necessary motion
corrections.
Range (0.0000–9.0000)
0.0000 [Default]
MC_3034:
U Backlash
compensation
Measure U-axis backlash and type the
value. When backlash compensation
activates, the CNC automatically
calculates the necessary motion
corrections.
Range (0.0000–9.0000)
0.0000 [Default]
Ballscrew Compensation Setup Parameters
MC_3050:
Ballscrew
compensation
The CNC can compensate for
inaccuracies along the ballscrew. This
ensures a high degree of precision in
the finished workpiece.
The machine builder can specify as
many as 128 equally sized segments
per axis for calibration.
On (enabled)
Off
(disabled) [Default]
NOTE:
Use Ballscrew
Compensation with the Automatic
File Loader. Perform a Machine
Home sequence before you enable
ballscrew compensation.
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