Detailed description
2.2 Exact stop
Basic logic functions: Continuouspath Mode, Exact Stop, LookAhead (B1)
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Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Effects
If a block change cannot be executed in continuous path mode, all axes programmed in this
part program block (except cross-block traversing special axes) are stopped. In this case,
contour errors do not occur.
The stopping of path axes during machining can cause undercuts on the workpiece surface.
2.2
Exact stop
Exact stop or exact stop mode
In contrast to continuous path mode, in exact stop or exact stop mode, all path axes and
non-modal special axes involved in the traversing motion are decelerated until they reach a
standstill at the end of each block. The transition to the next block occurs only when all axes
involved in the traversing motion have reached their programmed target position with subject
to the selected exact stop criterion.
This results in the following response:
•
All path axes and non-modal special axes involved in the traversing motion are
decelerated at the end of the block until they reach a standstill.
•
The program run time is considerably longer compared to continuous path mode due to
the deceleration of the axes and the wait time until "Exact stop" status is reached for all
machine axes involved.
•
In exact stop mode, undercuts can occur on the workpiece surface during machining.
Use
Exact stop mode should always be used when the programmed contour must be executed
exactly.
Activation
Exact stop mode is activated in the part program by programming the following G-functions:
G function
Meaning
G60
Exact stop on, modal
G09
Exact stop on, non-modal
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 ...