The next step is to adjust the currents and the switching thresholds of the
sensors. (Please read the following sections.)
Always adjust both sensors to your current consumables (upper sensor
and lower sensor)!
For applying the through-beam light barrier functionality it is anyway
necessary to use both, the upper Transparent sensor as well as the lower
Reflex sensor.
For using the reflex light barrier functionality only the (lower) Reflex
sensor is needed to detect the markings / Black Marks, but the through-
beam light barrier is needed for paper end detection.
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