HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 66)

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smart.Turn units
2.2 Units—Roughing
"Transverse roughing in ICP" unit
The unit machines the contour described in the FINISHED program
section from "NS to NE". Any auxiliary contour defined in FK will be
used.
Unit name: G820_ICP / Cycle: G820 (see page 267)
Access to the technology database:
 Machining operation: Roughing
 Affected parameters: F, S, E, P
Contour form:
see page 60
Cycle form
I, K
Allowance in X and Z direction (I = diameter)
P Maximum infeed
E Plunging behavior
 E=0: Descending contours are not machined
 E>0: Plunging feed rate for declining contour elements.
Descending contour elements are machined.
 No input: The plunging feed rate is reduced during
machining of declining contour elements by up to 50%.
Descending contour elements are machined.
SX, SZ Cutting limit (SX: diameter value)—(default: no cutting limit)
A Departure angle (reference: Z axis)—(default: orthogonal
to Z axis)
W Departure angle (reference: Z-axis)—(default: parallel
to Z axis)
Q Type of retraction at end of cycle
 0: Returns to starting point, first X, then Z direction
 1: Positions in front of the finished contour
 2: Retracts to safety clearance and stops
H Contour smoothing
 0: With each cut along the contour (within the infeed
range)
 1: Contour smoothing with the last cut (entire contour);
retracts at 45%
 2: No smoothing; retracts at 45°
D Hide elements; do not machine form elements (see figure)
O Hide undercutting:
 0: Undercuts are machined
 1: Undercuts are not machined
Further forms: see page 58