Siemens Sinumerik 840D Operating Turning page 18

Section 4
Notes
B500
B500
Boring
Pre-stopping (only for machining "chip clearing")
distance
manually
automatically
VR Constant cutting speed for retraction
XD Centre offset
X0 X-co-ordinate of the reference point X (abs)
X1...X7 X-co-ordinate of further reference points (abs or
(Locations) inc)
Y0
Y-co-ordinate of the Reference point Y (abs)
Y1...Y7
Y-co-ordinate of further reference points
(Locations) (abs or inc)
Z0 Reference point Z
Z1 Final drilling depth X (abs) or final drilling depth
(Drilling) referred to Z0 (inc)
Z1
End point of the thread (abs) or thread length
(Thread) (inc)
Z1 Final drilling depth X (abs) or final drilling depth
(Drilling) referred to Z0 (inc)
Z1 End point of the thread (abs) or thread length
(Thread) (inc)
Z2 Retraction amount before thread milling
ZR
Remaining depth for through drilling
("Yes" only for through-holes)
Page 16
Unit
m/min
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
840D/828D SINUMERIK Operate