Siemens SINUMERIK 840D sl Programming Manual page 1145

Cancellation of the infeed at the start
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Note
The sequence cannot be interrupted with a single block.
Resources
As resources, the cycle uses a block-wide synchronized action and a synchronized action
variable. The synchronized action is determined dynamically from the free area of the
synchronized action range (CUS.DIR - 1 ..., CMA.DIR - 1000 ..., CST.DIR – 1199 ...).
SYG_IS[1] is used as the synchronized action variable.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Start of the cycle at the current position of the oscillating axis.
Traversing of the infeed axis to the infeed depth at the start <S_I> with the feedrate for in‐
feed <S_R>.
Sparking out with the sparking-out time <S_P>.
Traversing of the oscillating axis with the grinding width <S_A> as travel path and the feedrate
for transverse infeed <S_F>.
Traversing of the infeed axis to the infeed depth at the end <S_J> with the feedrate for
infeed <S_R>.
Sparking out with the sparking-out time <S_P>.
Traversing of the oscillating axis with the grinding width <S_A> as travel path to the starting point
and the feedrate for transverse infeed <S_F>.
Cancel signal: The machining stops when the next start point is reached.
Without Cancel signal: The sequence is repeated until the total infeed depth <S_K> has been
reached. The last stroke is then distributed unevenly.
Indicates reiterating sequential steps.
Work preparation
3.25 Programming cycles externally
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