Detailed description
2.1 Path feedrate F
Basic logic functions: Feeds (V1)
26
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Retraction movement
The retraction motion (
liftfast
) for thread cutting is controlled by the following keywords:
•
LFON
⇒ Enable
liftfast
for thread cutting.
•
LFOF
⇒ Disable
liftfast
for thread cutting.
These G functions can always be programmed.
The default setting for NC Reset and/or NC Start is specified in machine data:
MD20150 GCODE_RESET_VALUES.
The following sources can initiate a retraction motion during thread cutting:
•
Fast inputs (programming with
SETINTLIFTFAST
for "LIFTFAST" option)
•
NC Stop
•
Alarms that implicitly initiate the NC stop.
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Figure 2-3
Interruption of
G33
through retraction motion
Retraction path
The retraction path can be configured in machine data:
MD21200 LIFTFAST_DIST.
If required, this path in the part program can be changed by writing
DILF
at any point.
Following an NC reset, the value entered in machine data:
MD21200 LIFTFAST_DIST
(default value) is always active.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...