Siemens SINUMERIK 840D sl Function Manual page 536

M1: Kinematic transformation
7.3 TRACYL (option)
● The control system deselects an active working area limit for axes affected by the
● Continuous path control and rounding are interrupted.
● DRF offsets must have been deleted by the operator.
● In the case of cylinder generated surface curve transformation with groove wall
Please note on de-selection
The same points apply as for selection.
Restrictions when TRACYL is active
The restrictions listed below must be noted when the TRACYL function is active:
Tool change
Tools may only be changed when the tool radius compensation function is deselected.
Supplementary conditions for TRACYL without groove side offset
With active TRANSMIT, the channel identifier of posBCS[ax[3]] must have another name in
the parts program, like the geometry axes. If posBCS[ax[3]] is written only outside the
TRACYL transformation, this restriction does not apply if the axis has been assigned to a
geometry axis. With active TRACYL, no contour information is processed via ax[3].
Frame
All instructions which refer exclusively to the base coordinate system are permissible
(FRAME, tool radius compensation). Unlike the procedure for inactive transformation,
however, a frame change with G91 (incremental dimension) is not specially treated.
The increment to be traversed is evaluated in the workpiece coordinate system of the new
frame - regardless of which frame was effective in the previous block.
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.
536
transformation.
(Corresponds to programmed WALIMOF).
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.
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions