Operating Instructions Chapter 10
CLV 480 Bar Code Scanner
8 010 080/O824/10-02-2005 © SICK AG · Division Auto Ident · Germany · All rights reserved 10-63
Appendix
No Read
The CLV failed to detect a bar code or the required number of bar codes specified by the
evaluation parameters during the Ö reading pulse.
No Read format
Special, parameterizable data block as a substitute for bar codes, which were expected but
not detected, in the data output string on the host interface for Ö No Read. Comprises a
variable combination of the error string and the Ö "Code-Info/Separator" block.
Object height detector
See distance detector.
Omnidirectional reading
Arrangement of the scan lines of at least two CLVs which form a cross. Due to the max. tilt
45
° of the CLV the position of a bar code to the scan lines is free.
One-Shot
Selective, one-off deflection of the oscillating mirror for each Ö reading pulse. Usually com-
prises a slow forward phase (read) and a fast return phase (return to starting position).
Oscillating mirror reversal point
Deflection point of the oscillating mirror at which it changes direction. Can be used to trigger
a Ö focus position switchover for slower applications (search mode).
Parameter set
Data record used to initialize and activate the functions implemented in the CLV. With
Ö downloading and Ö uploading the parameter set is transferred form CLV-Setup to the
CLV or from the CLV to CLV-Setup.
Parameter memory, external
Optional accessory containing an integrated connector cover. Enables devices to be conve-
niently replaced by storing a copy of the CLV parameter set (EEPROM). The replacement
device then accesses this parameter set directly and does not have to be configured
manually.
Percentage evaluation
Special operating mode in which the quality of the reads (not those of the bar codes, how-
ever) is assessed statistically. The bar codes must be stationary. The CLV carries out 100
scans and evaluates the reading quality. It then outputs the reading results on the Ö termi
-
nal interface every 2 s together with the Ö reading diagnosis data.
Plain text
Legible form of a CLV message. The CLV outputs special messages in coded form, e. g. the
result of the self-test is represented as three digits.
Reading diagnosis data
Data directly derived from the reading procedure by the CLV. This data enables the quality
of the read to be assessed. The data is always output on the Ö terminal interface together
with the reading result. Only output on the host interface if enabled on the
DATA STRING tab
in the "CLV-Setup" program (for the CLV
480 disabled by default).
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