Chapter
10
Operating Instructions
CLV 480 Bar Code Scanner
10-62
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8 010 080/O824/10-02-2005
Appendix
Focus position
Distance of the focal point of the emitted laser beam in front of the reading window. Can be
varied using the optical components in the CLV. Creates a distance-specific depth of field
(DOF) in which the bar code can be detected.
Functional interfaces
Switching inputs and outputs on the CLV.
Good Read
The CLV successfully detected a bar code or the required number of bar codes specified by
the evaluation parameters during the
Ö
reading pulse.
Header
Data block in the reading result on the
Ö
host interface. Used as a header in the
Ö
data
output string for the subsequent data content of the bar codes. Contains up to 10 elements,
consisting of reading diagnosis data and/or constants (control characters, letters, digits), de-
pending on the configuration. The "Header" block is empty in the default setting of the
CLV 480.
Host interface
Main data interface on the CLV with configurable data output format. Used to output the
Ö
reading result in telegram form to the host/PLC. Integrates the CLV in the SICK network
(RS 485) or builds a master/slave arrangement. Physically switchable to RS 232 or RS 422/
485. It supports various transmission protocols.
Increment management
Used in certain applications to separate bar codes with identical contents that move during
the reading procedure and assign them to the objects.
Line scanner
Scanner that uses a polygon mirror wheel with paraxial mirrors to deflect a focused laser
beam extremely fast. As a result, it creates a light spot in the reading plane that moves along
a straight line, which appears to the naked eye as a stationary scan line.
Line scanner with oscillating mirror
Line scanner that also deflects the laser beam about a central position, on both sides and
perpendicular to the scan direction using an oscillating mirror. By doing so, the CLV can
search for bar codes in larger areas. In addition to basic deflection with the maximum oscil-
lating amplitude, optimum oscillating mirror functions are also possible (variable deflection
per distance configuration,
Ö
One-Shot).
Master/slave configuration
Special arrangement for connecting up to max. 10 SICK bar code scanners in the CAN Scan-
ner Network to one reading station (e. g. left/right read). Thanks to the master, the entire
network appears as one device to the host.
Multiple read
Variable number of reading operations that must provide identical reading results (data
content) of the same bar code before the CLV outputs the result.
