Siemens ET 200S Manual page 500

Distributed i/o system

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Diffuse sensor

Diffuse Sensor

Reflex sensor

Reflex Sensor

Switching Hysteresis Parameter

Faults with the diffuse sensor or in the production process can result in signal

wobbles. The measured value then changes the switching threshold by 100 %

(object detected – object not detected). You can prevent this switching threshold

wobble using the switching hysteresis parameter. This will ensure a stable output

signal on the sensor.

You can parameterize 5%/10%/20%/50% for switching hysteresis.

Diffuse Sensor

Reflex Sensor

Circuit state 0: No object detected. In other

words, the object is not in the path of the

beams. The receiver cannot see any light.

Circuit state 1: Object detected. In other

words, the object is in the path of the be-

ams. The receiver sees some light.

Circuit state 0: No object detected. In other

words, the object is not in the path of the

beams. The receiver sees some light.

Circuit state 1: Object detected. In other

words, the object is in the path of the be-

ams. The receiver cannot see any light.

Distributed I/O System ET 200S

EWA 4NEB 780 6024-02 07

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