Siemens SINUMERIK 840D sl Function Manual page 692

Software cams, position switching signals (N3)
9.2 Cam signals and cam positions
Figure 9-6
Modulo rotary axis
The default signal response for modulo rotary axes is dependent on the cam width:
Figure 9-7 Software cams for modulo rotary axis (plus cam - minus cam < 180 degrees)
692
Position switching signals for linear axis (plus cam < minus cam)
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions