
General Information
Leuze
electronic
10
Technical description BCL 90
Leuze electronic
Object height detection
See distance detection.
One-shot
A directed, single deflection of the oscillating mirror for each
reading cycle
. It primarily consists of a
slow forward phase (read) and rapid return phase (return to the starting position).
Opening angle
a
The angle within the limits of which the laser beam is deflected by the polygon mirror wheel. Before
the reading window, a V-shaped area is formed radially in the scanning direction in which the bar code
to be read must be. If only a part of the opening angle is used (part of the scan line is positioned sym-
metrically around the middle), there will be a larger depth of field range for the same focus position
and resolution.
Oscillating mirror reversal point
Point of deflection the oscillating mirror is at in which a reversal of direction takes place. This point can
be used to trigger the
focus position switching
for low-speed applications (search function).
Parameter set
Data set with which the implemented functions are initialised and activated in the BCL. It is transferred
through upload or download from the BCL to BCL-Config or vice versa.
Pine tree effect
This effect of the
line scanner
with oscillating mirror is a result of the limits set by the active scan line
range (CP value) and the oscillation amplitude (CW value). Hence a "sharp window" of the same size
can be generated in the reading field for every distance configuration for any read distance.
Read diagnosis data
Data that the BCL derives directly from the read process. With these data, it is possible to assess,
among others, the quality of the reading. They are output via the
terminal interface
, always together
with the read result.
Read range (DOF)
Depth of field range at both sides of the focal point of the laser beam. The size of the range depends
on resolution and read distance.
Read result
Electronic representation of the data contents of the read bar code together with the
read diagnosis
data
in a
data output string
after the reading cycle is completed. The read result of the terminal inter-
face has a predefined format for content and output, while the read result of the host interface can be
separately configured for Good Read and No Read and have symbols added to it.
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