HEIDENHAIN iTNC 530 (60642x-04) Cycle programming - Manual (Page 209)

HEIDENHAIN iTNC 530 209
7.
1
1
TR
OCHOID
AL SL
O
T
(Cy
c
le 275, DIN/ISO:
G275)
Please note while programming:
The algebraic sign for the cycle parameter DEPTH
determines the working direction. If you program
DEPTH=0, the cycle will not be executed.
When using Cycle 275 TROCHOIDAL SLOT, you can define
only one contour program in Cycle 14 CONTOUR GEOMETRY.
Define the center line of the slot with all available path
functions in the contour subprogram.
The memory capacity for programming an SL cycle is
limited. You can program up to 4090 contour elements in
one SL cycle.
The TNC does not need Cycle 20 CONTOUR DATA in
conjunction with Cycle 275.
Cycle 275 cannot be used for machining a closed contour.
Danger of collision!
To avoid collisions,
 Do not program positions in incremental dimensions
immediately after Cycle 275 since they are referenced
to the position of the tool at the end of the cycle.
 Move the tool to defined (absolute) positions in all
principal axes, since the position of the tool at the end of
the cycle is not identical to the position of the tool at the
start of the cycle.
Enter in MP7441 bit 0 whether the TNC should output an
error message (bit 0=0) or not (bit 0=1) if spindle rotation
is not active when the cycle is called. The function also
needs to be adapted by your machine manufacturer.