Siemens SIMATIC S5 Equipment Manual page 88

Matching Module 3 for Absolute Encoders
Hysteresis Specification
Assumed track distribution:
An actual value fluctuating within the hysteresis limits will cause only one interrupt, when it
reaches a switching point.
All switching points which are reached in one traversing direction cause the exact triggering of an
interrupt. When the direction is reversed, the switching point is shifted by the hysteresis value!
Then the value is exact again.
Accordingly, high hysteresis values entail high losses of accuracy.
The lowest parameterized track value must exceed the hysteresis value.
6 – 4
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A = Startin values
E = End va ues
05 = Hysteresis value
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