Detailed description
2.2 Functions
Basic logic functions: Various NC/PLC interface signals and functions (A2)
32
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Limit angle
If AR is used to program an involute leading to the base circle with an angle of rotation that is
greater than the maximum possible value, an alarm is output and program execution
aborted.
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Figure 2-8
Limited angle of rotation towards base circle
The alarm display can be suppressed using the following parameter settings:
MD21016 $MC_INVOLUTE_AUTO_ANGLE_LIMIT = TRUE (automatic angle limitation for
involute interpolation)
The programmed angle of rotation is then also limited automatically and the interpolated path
ends at the point at which the involute meets the base circle. This, for example, makes it
easier to program an involute, which starts at a point outside the base circle and ends
directly on it.
Tool radius compensation
2 1/2 D tool-radius compensation is the only tool-radius compensation function permitted for
involutes. If 3D tool-radius compensation is active (both circumferential and face milling),
when an involute is programmed, machining is interrupted with alarm 10782.
With 2 1/2 D tool-radius compensation, the plane of the involute must lie in the compensation
plane. or else alarm 10781 will be generated. It is however permissible to program an
additional helical component for an involute in the compensation plane.
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 ...