Siemens SINUMERIK 840D sl Function Manual page 1670

Detailed Description
2.3 Configurable gear adaptation
Gear step change at fixed position
Typical time sequence for the gear step change at fixed position:
Figure 2-10
60
Gear step change with stationary spindle
Basic logic functions: Spindles (S1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0