HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 222)

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8.1 W
or
k
ing with Cy
cles
Calling a cycle with CYCL CALL
The CYCL CALL function calls the fixed cycle that was last defined. The
starting point of the cycle is the position that was programmed last
before the CYCL CALL block.
 To program the cycle call, press the CYCL CALL key.
 Press the CYCL CALL M soft key to enter a cycle call.
 If necessary, enter the miscellaneous function M (for
example M3 to switch the spindle on), or end the
dialog by pressing the END key
Calling a cycle with M99/89
The M99 function, which is active only in the block in which it is
programmed, calls the last defined fixed cycle once. You can program
M99
at the end of a positioning block. The TNC moves to this position
and then calls the last defined fixed cycle.
If the TNC is to execute the cycle automatically after every positioning
block, program the cycle call with M89.
To cancel the effect of M89, program:
„ M99 in the positioning block in which you move to the last starting
point, or
„ Define with CYCL DEF a new fixed cycle