Siemens Sinumerik 802D sl Programming Manual page 36

Commands Calling Axis Movements
2.1 Interpolation commands
Notice
The Polar Coordinate Interpolation is based on the Siemens option TRACYL.
S
The relevant machine data need to be set accordingly.
For details refer to the manual "Extended Functions", chapter M1, 2.2 ff.
S
Restrictions when selecting
S An intermediate motion block is not inserted (phases/radii).
S A spline block sequence must be terminated.
S Tool radius compensation must be deselected.
S The frame which was active prior to TRACYL is deselected by the control
(corresponds to "Reset programmed frame" G500).
S An active working area limitation is deselected by the control for the axes affec-
ted by the transformation (corresponds to programmed WALIMOF).
S Continuous path control and rounding are interrupted.
S DRF offsets must have been deleted by the operator.
S In the case of cylinder generated surface curve transformation with groove wall
compensation (axis configuration 2, TRAFO_TYPE_n = 513), the axis used for
the correction (TRAFO_AXES_IN_n[3]) must be set to zero (y = 0) so that the
groove is machined in the center of the programmed groove center line.
Restrictions when delecting
S The same points apply as for selection.
Restrictions when in polar coordinate interpolation
S Tool change:
Tools may only be changed when the tool radius compensation function is dese-
lected.
S Work offset:
All instructions which refer exclusively to the base coordinate system are per-
missible (work offset, tool radius compensation). Unlike the procedure for inac-
tive transformation, however, a work offset change with G91 (incremental di-
mension) is not specially treated. The increment to be traversed is evaluated in
the workpiece coordinate system of the new work offset -- regardless of which
work offset was effective in the previous block.
S Rotary axis:
The rotary axis cannot be programmed because it is occupied by a geometry
axis and cannot thus be programmed directly as a channel axis.
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SINUMERIK 802D sl/840D sl840D/840Di sl/840Di/810D ISO Turning -- 04.07 Edition
© SIEMENS AG 2007 All rights reserved
04.07