HEIDENHAIN MANUALPLUS 620 - Page 336

336 ISO Programming
4.26 Milling Cycles
1 Starting position (X, Z, C) is the position before the cycle begins.
2 Moves to the safety clearance and approaches to the first milling
depth.
3  J not programmed: Mills the programmed contour.
 J programmed, open contour: Calculates and mills the “new”
contour.
4 Returns to retraction plane RB.