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
10-61
Appendix
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 CLV 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
code position
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.
Distance detector
System for recording the distance of objects with a bar code in front of the CLV in stages.
When the bar code is read from above, for example, the distance is detected by installing
photoelectric reflex switches above one another beside the conveyor belt. Together with the
combination of "IN 0" to "IN 4" switching inputs and the assignment table for the
Ö
distance
configurations, the ranges for
Ö
dynamic focus control are defined.
Download
Method of transferring the
Ö
parameter set that was modified with the
Ö
CLV-Setup pro-
gram offline from the PC to the CLV. CLV-Setup either always transfers a complete copy to
the memory (RAM) of the CLV (D
OWNLOAD
TO
CLV) or just the parameter previously pro-
cessed using the context menu of the right mouse button (D
OWNLOAD
P
ARAMETER
) or all pa-
rameters of the displayed tab (D
OWNLOAD
P
ARAMETERS
OF
THIS
VIEW
). You can overwrite the
existing parameter set in EEPROM of the CLV 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).
Error messages
Messages in
Ö
plain text or coded (3-digit) that are used to identify a malfunction on the
CLV in Reading mode. The messages are output on the terminal interface only. Exception:
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 CLV for errors that were diagnosed while the
bar code was being read. The entry for the host interface is made in the separator of the
Ö
data output string and must be enabled using the parameters (for the CLV 480 disabled
by default).