Siemens SINUMERIK 840D sl Operating Manual page 233

The specification of the infeed axis P8 <S_A1> and/or oscillating axis P9 <S_A2> are optional.
If one or both parameters are not specified, the cycle uses the first two geometry axes of the
channel.
If the sum of the infeed depths P1 <S_I> and P2 <S_J> is 0 or the total infeed depth P3
<S_K> is 0, only a sparking-out stroke is performed.
Sequence
1. Start of the cycle at the current position of the oscillating axis with infeed depth 0
2. Traversing of the oscillating axis with the grinding width P4 <S_A> as travel path and
feedrate P5 <S_F> with continuous increase in the infeed depth up to the infeed depth at
the start P1 <S_I>.
3. Sparking out with the sparking-out time P7 <S_P>.
4. Traversing of the oscillating axis with the grinding width P4 <S_A> as travel path to the
starting point and feedrate P5 <S_F> with continuous increase in the infeed depth up to
the infeed depth at the end P2 <S_J>.
5. Sparking out with the sparking-out time P7 <S_P>.
6. Traversing of the oscillating axis with the grinding width P4 <S_A> as travel path to the
starting point and feedrate P5 <S_F>.
The sequence cannot be interrupted with a single block.
The sequence is repeated until the total infeed depth P3 <S_K> has been reached. The last
stroke is then distributed unevenly.
Example
Oscillation with:
● 20 mm infeed depth at the start
● 10 mm infeed depth at the end
● Total infeed depth 100 mm
● 100 mm stroke
Grinding
Operating Manual, 05/2017, A5E40869190
Programming technology functions
9.4 Oscillating cycles (CYCLE4071 ... CYCLE4079)
233