HEIDENHAIN TNC 407 (280 580) User Manual User Manual
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TNC 425/TNC 415 B/TNC 407
4
Programming
Automatic tool change: M101
M101 is a machine tool dependent function. See your machine tool manual.
Standard behavior — without M101
If the tool reaches the maximum tool life (TIME1) during program run, the
TNC internally flags this data. The machine tool builder determines how
the machine tool reacts to this information.
Automatic tool change – with M101
The TNC automatically changes the tool if the tool life (TIME1 or TIME2)
expires during program run. The tool is not changed immediately upon
expiry, but – depending on the workload of the processor – a few NC
blocks later.
Duration of effect
M101 is reset with M102.
Standard NC blocks with radius compensation R0, RR, RL
The radius of the replacement tool must be the same as that of the
original tool. If the radii are not equal, the TNC displays an error message
and does not replace the tool.
NC blocks with surface-normal vectors and 3D compensation
The radius of the replacement tool can differ from the radius of the
original tool. The tool radius is not included in program blocks transmitted
from CAD systems. A negative delta value (DR) can be entered in the
tool table.
If DR is positive, the TNC displays a message and does not change the
tool. You can suppress this message with the M function M107, and
reactivate it with M108.