HEIDENHAIN TNC 426 (280 476) - Manual (Page 207)

180 7 Programming: Miscellaneous functions
7.
3 Miscellaneous F
u
nctions f
o
r Coor
dinat
e D
ata
Activating the most recently entered datum:
M104
Function
When processing pallet tables, the TNC may overwrite your most
recently entered datum with values from the pallet table. With M104
you can reactivate the original datum.
Effect
M104 is effective only in the blocks in which it is programmed.
M104 becomes effective at the end of block.
Moving to position in an 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.
Following 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.