HEIDENHAIN TNC 370 User Manual page 193

8
Cycles
8.1
General Overview of Cycles
Cycle call
The following data must be programmed before a cycle calt:
* BLK FQRM for graphic disptay
* Tooi calf
l
Direction of rota&n of the spindffl (misceilansous functions M3/M4f
* Cycta definltkm K?KL DEF).
The following cycles become effective immediately upon being defined in
the part program. These cycles must not (and cannot) be called:
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The cycles for circular and linear hole patterns
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The SL cycle CONTOUR GEOMETRY
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Coordinate transformation cycles
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The DWELL TIME cycle.
All other cycles must be called separately.
If the cycle is to be executed once after the last programmed block,
program the cycle call
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with CYCL CALL
Cycle call with miscellaneous function M3
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or with the miscellaneous function M99.
If the cycle is to be run automatically after every positioning block, pro-
gram the cycle call with M89 (depending on machine parameter 7440).
M89 is cancelled by programming
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M99, or
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CYCL CALL, or
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CYCL DEF.
8-4
TNC 370