Operation Manual

228
4.20 Contour-Based Turning Cycles
Finish contour G890
G890 finishes the contour area defined by NS, NE in one pass and
takes chamfers/rounding arc into account. The operation proceeds
from NS to NE.
Omit-codes for recesses and undercuts
G call Function D code
G22 Recess for sealing ring 512
G22 Recess for guard ring 1.024
G23 H0 General recess 256
G23 H1 Relief turn 2.048
G23 H4 Undercut type U 32.768
G23 H5 Undercut type E 65.536
G23 H6 Undercut type F 131.072
G23 H7 Undercut type G 262.744
G23 H8 Undercut type H 524.288
G23 H9 Undercut type K 1.048.576
Add the codes if you want to skip several elements.
K
1
2
H=
2
0
Q = 3
Z
Q=
1
X
Z
I
Ø
Parameters
NS Starting block number (beginning of contour section)
NE End block number (end of contour section)
 NE not programmed: The contour element NS is machined
in the direction of contour definition.
 NS=NE programmed: The contour element NS is machined
opposite to the direction of contour definition.
E Plunging behavior
 E=0: Descending contours are not machined.
 E>0: Plunging feed rate
 No input: Machine falling contours at programmed feed rate
V Identifier beginning/end (default: 0)
A chamfer/rounding arc is machined:
 V=0: At start and end
 V=1: At start
 V=2: At end
 V=3: No machining
 V=4: Chamfer/rounding arc is machined, not the basic
element (prerequisite: Contour section with one element)
Q Type of approach (default: 0)
 Q=0: Automatic selection—the CNC PILOT checks:
 Diagonal approach
 First X, then Z direction
 Equidistant around the barrier
 Omission of the first contour element if the starting
position is inaccessible
 Q=1: First X, then Z direction
 Q=2: First Z, then X direction
 Q=3: No approach—tool is located near the starting point of
the contour area.
 Q=4: Residual finishing