Siemens SINUMERIK Series Function Manual page 537

Figure 8-2
Modulo rotary axes
The switching edges of the cam signals are generated as a function of the rotary axis
traversing direction:
● The plus cam signal switches from 0 to 1 when the axis traverses the minus cam in a
● The minus cam signal changes level in response to every positive edge of the plus cam
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Software cams for linear axis (plus cam < minus cam)
positive axis direction and from 1 back to 0 when it traverses the plus cam.
signal.
Note
The described response of the plus cam applies on conditionthat:
plus cam - minus cam < 180 degrees
N3: Software cams, position switching cycles - only 840D sl
8.2 Cam signals and cam positions
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