Siemens SINUMERIK 840D sl Operating Manual page 305

Parameter Description
Retraction Retraction distance - (for chipbreaking only)
Manual

Retraction distance after each machining step (V2)
Automatic

Without retraction distance after each machining step
V2 Retraction distance after each machining step – (only without compensating chuck,
chipbreaking and manual retraction)
Distance by which the drill is retracted for chipbreaking.
V2 = automatic: The tool is retracted by one revolution.
DT Dwell time at final drilling depth in seconds
(only for G code)
SR Spindle speed for retraction - (only for when a compensating chuck is not used)
(only for G code)
SDE Direction of rotation after end of cycle:
(only for G code)



Technology
Yes

–
–
–
–
No

Exact stop (only
Behavior the same as it was before the cycle was called

for technology,
G601: Block advance for exact stop fine

yes)
G602: Block advance for exact stop coarse

G603: Block advance if the setpoint is reached

Precontrol (only
Behavior the same as it was before the cycle was called

for technology,
FFWON: with precontrol

yes)
FFWOF: without precontrol

Acceleration (only
Behavior the same as it was before the cycle was called

for technology,
SOFT: Jerk-limited (soft) acceleration of the axes

yes)
BRISK: Abrupt acceleration of the axes

DRIVE: Reduced axis acceleration

Spindle (only for
Speed controlled: Spindle for MCAL; speed controlled operation

technology, yes)
Position controlled: Spindle for MCALL; position controlled operation

Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Exact stop
Precontrol
Acceleration
Spindle
Programming technology functions (cycles)
8.1 Drilling
Unit
mm
s
rev/min
305