HEIDENHAIN TNC 620 (73498x-01) ISO programming - Manual (Page 282)

282 Programming: Miscellaneous functions
9.3 Miscellaneous functions f
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Moving to positions in a non-tilted coordinate
system with a tilted working plane: M130
Standard behavior with a tilted working plane
The TNC places the coordinates in the positioning blocks in the tilted
coordinate system.
Behavior with M130
The TNC places coordinates in straight line blocks in the untilted
coordinate system.
The TNC then positions the (tilted) tool to the programmed
coordinates of the untilted system.
Effect
M130 functions blockwise in straight-line blocks without tool radius
compensation.
Danger of collision!
Subsequent positioning blocks or fixed cycles are carried
out in a tilted coordinate system. This can lead to problems
in fixed cycles with absolute pre-positioning.
The function M130 is allowed only if the tilted working
plane function is active.