Siemens SINUMERIK 840D Programming Manual page 88

2
Drilling Cycles and Drilling Patterns
2.1 Drilling cycles
_PTAB (evaluation of pitch PIT)
Parameter _PTAB determines the unit of measurement of the
pitch.
• 0=according to programmed system of units inch/metric
• 1=pitch in mm
• 2=pitch in thread starts per inch
• 3=pitch in inches/revolution.
This parameter is needed in connection with the option for
selecting different thread tables in the cycles support.
_TECHNO (technological settings)
Parameter _TECHNO can be set to select
technological characteristics for tapping operations.
Possible values are:
Ones digit (exact stop behavior):
•
0=as programmed before cycle call
•
1=(G601)
•
2=(G602)
•
3=(G603)
Tens digit (feedforward control):
•
0=as programmed before cycle call
•
1=with feedforward control (FFWON)
•
2=without feedforward control (FFWOF)
Hundreds digit (brake application point):
•
0=without calculation
•
1=with calculation.
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SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
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03.96
09.01
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