HEIDENHAIN TNC 426, User Manual

Page: 221 / 502

HEIDENHAIN TNC 426, TNC 430 195
7.
5 Miscellaneous F
u
nctions f
o
r Rotary Ax
es
M128 with 3-D tool compensation
If you carry out a 3-D tool compensation with active M128 and active
radius compensation RL/RR, the TNC will automatically position the
rotary axes for certain machine geometrical configurations (Peripheral
milling,
see “Three-Dimensional Tool Compensation,” page 114).
Effect
M128 becomes effective at the start of block, M129 at the end of
block. M128 is also effective in the manual operating modes and
remains active even after a change of mode. The feed rate for the
compensation movement will be effective until you program a new
feed rate or until you reset M128 with M129.
To cancel M128, enter M129. The TNC also resets M128 if you select
a new program in a program run operating mode.
Example NC blocks
Moving at 1000 mm/min to compensate a radius.
The machine geometry must be entered in machine
parameters 7510 ff. by the machine tool builder.
L X+0 Y+38.5 RL F125 M128 F1000