Prerequisites For The Program To Be Converted - HEIDENHAIN ITNC 530 User Manual

Prerequisites for the program to be converted

The TNC reverses the sequence of all positioning blocks in the
program. The following functions are not taken into the backward
program.
Define the workpiece blank
Tool calls
Coordinate transformation cycles
Fixed cycles and probing cycles
Cycle calls CYCL CALL, CYCL CALL PAT, CYCL CALL POS
Miscellaneous (M) functions
HEIDENHAIN therefore recommends converting only programs
containing a pure contour description. All path functions available on
the TNC are permitted, including FK blocks. RND and CHF blocks are
moved by the TNC so that they can be executed again at the correct
position on the contour.
The TNC also calculates the radius compensation for the other
direction.
If the program included contour approach and departure
functions (APPR/DEP/RND), check the backward program
with the programming graphics. Certain geometric
conditions might result in incorrect contours.
512 9 Programming: Special Functions