Operating instructions
Chapter
10
ICR 84x Image Code Reader
Appendix
8 010 961/0000/10-05-2005
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-45
10.12 Glossary
For additional terms, see also
Online help “CLV Setup Help“
.
1-D code (bar code)
Field of parallel, dark bars and light gaps which can be applied to the medium (base) by any
of several printing procedures following a certain specification. A corresponding number and
combination of bars and gaps (elements), which can be read by a machine, result in an
alphanumeric character which can be read by the user. Since all of the encoded information,
framed by start and stop characters, is available in one dimension and is usually scanned
line-by-line, these bar codes are called linear codes. The various types of bar code differ in
their selection of characters which can be encoded, structure (number of elements per
character, character count, start/stop characters, check character), the information density
and the print tolerances. The length of the code bars and gaps is irrelevant in terms of the
information content, but is relevant for scanability.
2-D code
In a two-dimensional code, the information is arranged more densely, using dark and light
cells (squares) in a matrix. The vertical and horizontal arrangement of the cells is determined
using the data-content specification in reference to the middle and side edge reference
points. For error-correction purposes when reading, a mathematical method provides the
code with a redundancy feature (e.g. error-correction code words for DataMatrix ECC 200).
The omnidirectional reading of 2-D codes is aided by image processing.
Aspect ratio
For bar codes, ratio of the code height (bar length) to the code length (number of
characters). The SMART decoder can read bar codes with extremely small aspect ratios.
Auxiliary input
Special function of the
Ö
auxiliary interface. Used to enter code data subsequently in order
to complete reading results sent to the host.
Auxiliary interface
Auxiliary interface (RS 232) on the ICR with fixed data output format. Used to connect the
“CLV Setup“ program to the ICR so that it can operate and configure the device. Also used
to output
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system and error messages. Can be assigned various functions. The
communication of the auxiliary interface can also be routed via the Ethernet interface (port
2111).
CAN interface
Used to establish a quick SICK-specific CAN scanner network with various functions (e.g.
multiplexer, master/slave) or for integration into existing CAN networks in accordance with
the CANopen protocol. In Remote mode, using CLV Setup, you also can access to the ICR
for operating and parameterization via the CAN interface (network).
CLV Setup
PC program which runs under Windows 95
TM
/98
TM
, Windows NT4.0
TM
, Windows 2000
TM
and
Windows XP
TM
. Used for offline parameterizing (adjustment to the reading application at
hand) and the online operation of the ICR. By
Ö
uploading and
Ö
downloading, the
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parameter set to be processed is exchanged with the ICR.