HEIDENHAIN SW 68894x-03 - Manual (Page 263)

HEIDENHAIN CNC PILOT 640 263
4.5 Recessing cy
cles
Type of machining for technology database access: Finishing
Cycle run
1 Approach the workpiece from the starting point to the safety
clearance
2 Machine undercut according to cycle parameters
3 Return to starting point on diagonal path
4 Move to the tool change point according to the G14 setting
MFS M at beginning: M function that is executed at the
beginning of the machining step.
MFE M at end: M function that is executed at the end of the
machining step.
WP Displays which workpiece spindle is used to process the
cycle (machine-dependent)
 Main drive
 Opposing spindle for rear-face machining