Boundary Conditions - Siemens SINUMERIK 840DE sl Function Manual

side, statement G42 must be programmed instead of G41 or the value of OFFN specified with
a negative sign.
Tool diameter
With TRACYL and a tool whose diameter is less than the groove width, the same groove side
geometry is not generated as with a tool whose diameter is the same as the groove width. To
improve the precision, it is recommended that the tool diameter is selected to be only slightly
less than the groove width.
Axis utilization
Note
The following axes cannot be used as a positioning axis or a reciprocating axis:
● The geometry axis in the peripheral direction of the cylinder peripheral surface (Y axis).
● The additional linear axis for groove side compensation (Z axis).
2.2.4

Boundary conditions

Selection/deselection
● An intermediate motion block is not inserted (phases/radii).
● A series of spline blocks must be concluded.
● Tool radius compensation must be deselected.
● The frame which was active prior to TRACYL is deselected by the control system
(analog G500).
● An active working area limit is deselected for axes affected by the transformation
(analog WALIMOF).
● Continuous path control and rounding are interrupted.
● DRF offsets must have been deleted by the operator.
● The Y axis used for the compensation should be set to zero for selection and active groove
side compensation.
Tool change
Tools can be changed only when the tool radius compensation function is deselected.
Frame
A frame change with G91 (incremental dimension) is not specially treated for active
transformation. The path to be traversed is evaluated in the workpiece coordinate system of the
new frame - regardless of which frame was active in the previous block.
Transformations
Function Manual, 06/2019, A5E47435470B AA
M1: Kinematics transformation
2.2 TRACYL cylinder surface transformation (option)
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