HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 139)

123 HEIDENHAIN TNC 410, TNC 426, TNC 430
To activate the datum that was last set: M104 (only
TNC 426, TNC 430 with NC software 280 474-xx)
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 positions in an untilted coordinate
system with a tilted working plane: M130 (not with
TNC 410)
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 only in straight-line blocks without tool radius
compensationand in blocks in which M130 is programmed.
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