Siemens SIMOTION Function Manual page 78

Cam Track TO - Part II
4.2 TO Cam Track basics
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START
Figure 4-11 Hysteresis range (height of blue sections) and behavior of a cam track with a position-based cam, effective
direction in both directions.
As the cam track switches in both directions, the output cam does not switch off after the first
reversal of direction. The second switch-on point is moved to position 30, due to active
hysteresis.
Example: time-based cam hysteresis
Cam track configuration (only one output cam configured):
Output cam type: time-based cam; switch-on position, 40 mm; ON duration, 0.5 s; hysteresis,
20 mm; effective direction: both
Axis positions:
0 mm -> 100 mm -> 20 mm -> 50 mm -> 30 mm -> 80 mm -> 10 mm -> 150 mm
Figure 4-12 Hysteresis range (height of blue sections) and behavior of a cam track with one time-based cam, no effective
direction.
Time-based cam switches off only after ON duration has expired, not after change of direction.
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Switching state of output cam
Hysteresis
Actual position of axis
Output Cams and Measuring Inputs
Function Manual, 04/2014