HEIDENHAIN iTNC 530 (340 49x-03) Pilot - Manual (Page 100)

100
Special Cycles
TOLERANCE (Cycle 32)
The TNC automatically smoothes the contour between two path
elements (whether compensated or not). The tool has constant contact
with the workpiece surface. If necessary, the TNC automatically reduces
the programmed feed rate so that the program can be machined at the
fastest possible speed without short pauses for computing time.
A contour deviation results from the smoothing. The size of this deviation
(tolerance value) is set in a machine parameter by the machine
manufacturer. You can change the pre-set tolerance value with Cycle 32
(see figure at top right).
8 CYCL DEF: Select Cycle 32 TOLERANCE
8 Tolerance T: Permissible contour deviation in mm
8 Finishing/Roughing: (software option)
Select the filter setting
0: Milling with increased contour accuracy
1: Milling at increased feed rate
8 Tolerance for rotary axes: (software option)
Permissible position error of rotary axes in degrees with active
M128.
The TNC and the machine tool must be prepared for fast
contour milling by the machine tool builder.
Cycle 32 TOLERANCE is effective immediately upon
definition.