Chapter
10
Operating Instructions
CLV 480 Bar Code Scanner
10-60
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SICK AG · Division Auto Ident · Germany · All rights reserved
8 010 080/O824/10-02-2005
Appendix
example, to define a capture range so that bar codes with identical data contents in a given
range can be separated.
Code geometry
Length and height dimensions of the bar code.
Code info/Separator
Data block in the reading result on the
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host interface. Used to provide additional informa-
tion about the bar codes. Can be attached to the bar code as a prefix or suffix. Contains up
to 10 elements, consisting of reading diagnosis data and/or constants (control characters,
letters, digits), depending on the configuration. The "Code-Info/Separator" block is empty in
the default setting of the CLV 480.
Code position (CP value)
Position of the first dark bar in a detected bar code along the
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scan line. Calculated by the
CLV for each scan and can be used, for example, to separate bar codes with identical data
contents. The active evaluation range in the scan line can be restricted for
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decoding
purposes by specifying the maximum and minimum CP value for the application.
Command strings, commands
CLV user interface – alternative to the "CLV-Setup" program. Basic, yet clearly structured
command language for modifying the CLV parameter sets online. Accesses the CLV
command interpreter directly. Special programming activities are required to use the
command strings from the host.
Configuration file
File in the "CLV-Setup" program that archives the entire
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parameter set of the CLV. Can
also be printed out in tabular form.
Data forwarding
Option of forwarding data sent by the host transparently to a terminal via the CLV using an
identifier. Data can also be forwarded in the opposite direction. Furthermore, this function
also allows data received on one of the serial interfaces to be output again straight away on
one of the same interfaces (echo). Application: forwarding reading results in pass-through
mode, e. g. in a master/slave network.
Data output string
Structured data telegram in the
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reading result output by the CLV on the
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host interface.
The structure of the data string is flexible and can be adapted to a large extent to the sub-
sequent data processing task. The data output format of the
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terminal interface, on the
other hand, cannot be changed.
Decoder, decoding
Code-type-specific evaluation routine for reconstructing the read bar code in electronic form
in order to decode its data content.
Deflection angle
Angle about each side of the center position CW = 50 (equal to 0
°
) that the
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scan line
sweeps when it is deflected by the oscillating mirror. Also referred to as the oscillating angle.