Leuze
electronic
Operation
Leuze electronic
Technical Description BCL 90
109
T
N
T 35/
7-
24V
8.7.3 Calibrating help
The operating mode calibrating help permits the optimum positioning of the middle of the scan line on
the bar code. In this mode, the BCL does not output any read results.
Line scanner with oscillating mirror:
In the calibrating help mode, the BCL switches off the oscillation operation (base setting: oscillating at
predefined amplitude) and positions the scan line under the angle CW=50 (corresponds to a light exit
angle smaller than 105°). The angle cannot be changed.
8.7.4 Background Teach-in
When the autofocus function is operated in the mode "difference to background" or "Difference to
background with tracking", the BCL first has to learn the background in its field of view before a suc-
cessful read can be performed. When generating the internal distance profile, no reading object may
be within the field of view of the BCL. In this mode, the BCL does not output any read results.
Line scanner with oscillating mirror:
In background teach-in, the BCL switches off the oscillation operation (base setting: oscillating at pre-
defined amplitude) and positions the scan line under the angle CW=50 (corresponds to a light exit an-
gle smaller than 105°). The angle cannot be changed.
Figure 8.8: BCL-Config: display of the learned background
8.7.5 Self Test
After being switched on, the device runs a self test before the initialisation with the parameter set. In
the self test, the BCL checks the proper functioning of its hardware components. Finally, a report on
the test result is sent through the terminal interface. During the test routine, the BCL does not output
any read results.
The code number "15000" means that the self test has been concluded successfully and no defect
has been diagnosed.
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