HEIDENHAIN iTNC 530 (60642x-04) - Manual (Page 386)

386 Programming: Miscellaneous Functions
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.3 Miscellaneous functions f
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Activating the most recently entered reference
point: M104
Function
When processing pallet tables, the TNC may overwrite your most
recently entered reference point with values from the pallet table.
With M104 you can reactivate the original reference point.
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 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.
The TNC does not change the active basic rotation when
running the M104 function.
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.