Chapter
10
Operating Instructions
CLV490 Bar Code Scanner
10-88
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8009993/RA61/2007-07-20
Appendix
Deflection angle
Angle about each side of the center position CW = 50 (equal to 0
°
) that the
Ö
scan line
sweeps when it is deflected by the oscillating mirror. Also referred to as the oscillating angle.
Deflection range
Deflection of the scan line caused by the
Ö
oscillating mirror, perpendicular to the scan
direction about the center position CW = 50 at each side (corresponds to a deflection angle
of 105
°
). Also referred to as oscillating amplitude. The maximum deflection range is set in
O
SCILLATING
WITH
FIXED
A
MPLITUDE
mode. In O
SCILLATING
WITH
VARIABLE
A
MPLITUDE
mode, the
deflection range is set for each distance configuration using the O
SCILLATING
M
IRROR
tab in
the "CLV-Setup" program.
Distance configuration
Data record in the CLV490 for defining a
Ö
focus position for the laser beam for
Ö
dynamic
focus control. The focus position as well as the maximum and minimum
Ö
reading angle
must be entered on the R
EADING
C
ONFIGURATION
tab in the "CLV-Setup" program for this pur-
pose. In the case of the line scanner with oscillating mirror, the
Ö
oscillating amplitude
(deflection range) is also required. The depths of field for the individual focus positions are
shown as a function of the resolution values in the specification diagrams.
Download
Method of transferring the
Ö
parameter set that was modified with the
Ö
CLV-Setup pro-
gram offline from the PC to the CLV490. CLV-Setup either always transfers a complete copy
to the memory (RAM) of the CLV490 (D
OWNLOAD
TO
CLV) or just the parameter previously
processed using the context menu of the right mouse button (D
OWNLOAD
P
ARAMETER
) or all
parameters of the displayed tab (D
OWNLOAD
P
ARAMETERS
OF
THIS
VIEW
). You can overwrite the
existing parameter set in EEPROM of the CLV490 by choosing the "Permanent" save option.
Dynamic focus control
Function for shifting the focal point of the laser beam across a wide range in the reading
plane. The dynamic focus control function is event controlled (e. g. by the distance detector)
or dynamic in the
Ö
Autofocus function.
Error messages
Messages in
Ö
plain text or coded (3-digit) that are used to identify a malfunction on the
CLV490 in Reading mode. The messages are output on the auxiliary interface only. Excep-
tion: ST = 3 (device error), which is also output on the host interface. The error messages
can be displayed in the Terminal emulator in the "CLV-Setup" program.
Error status
Identifier output with the reading result by the CLV490 for errors that were diagnosed while
the bar code was being read. The entry for the host interface is made in the "Code-Info/
Separator" block of the
Ö
data output string and must be enabled using the parameters (for
the CLV490 disabled by default).
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 CLV490. Creates a distance-specific depth of
field (DOF) in which he bar code can be detected.
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