Hysteresis; Ill. 14 Positive Hysteresis; Ill. 15 Negative Hysteresis - Baumer OM20 IO-Link Operating Manual

Baumer
8.8

Hysteresis

The Hysteresis prevents unwanted switching of the switching output. The parameterized value
of the hysteresis is the difference in distance between the points at which the switching output is
activated and deactivated. Baumer recommends always setting the hysteresis not equal to 0.
Positive hysteresis
1
0
Ill. 14: Positive hysteresis
Switching output in point mode: A positive hysteresis value corresponds to a right aligned
n
hysteresis.
Switching output in window mode: A positive hysteresis value corresponds to a hysteresis
n
aligned outside of the window.
Example:
n
▪ Measuring mode of the switching output: point mode
▪ Switching point (SP1): 200 mm
▪ Hysteresis: 1.5 mm
▪ This results in a right aligned hysteresis. If the measured distance is less than 200 mm,
the switching output is active. If the object to be measured moves from 200 mm to
201 mm, the switching output remains active due to the hysteresis. As soon as the mea-
sured distance is greater than 201.5 mm, the switching output is deactivated (switching
output switches to low). If the object to be measured moves from 202 mm to 201 mm, the
switching output remains deactivated. The switching output only changes its state at
200 mm (parameterized switching point).
Negative hysteresis
1
0
Ill. 15: Negative hysteresis
Switching output in point mode: A negative hysteresis value corresponds to a left aligned
n
hysteresis.
Switching output in window mode: A negative hysteresis value corresponds to a hysteresis
n
aligned within the window.
Example:
n
▪ Measuring mode of the switching output: window mode
▪ Switching point 1 (SP1): 200 mm
▪ Switching point 2 (SP2): 300 mm
▪ Hysteresis: -1.5 mm
V2 | OM20/OM30 IO-Link
Point mode
SP1
Point mode
SP1
Window mode
1
0
SP1
Window mode
1
0
SP1
Operating Manual
Functions | 8
SP2
SP2
33