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CLV 41x Bar Code Scanner
© SICK AG • Auto Ident • Germany • All rights reserved
15
Operating Instructions
8 008 224/I982/08-00
Fig. 11. Preventing surface reflection by rotating the CLV from the perpendicular
Line scanner (Top view)
a) CLV with front light emission
b) CLV with lateral light emission
(flush mounting)
105
°
105
°
Count direction of code position CP
The CLV determines the position of the bar code within the scan line (CP value),
Fig. 12
. This can be used to separate several identical bar codes (identical code
type, length and content) and output them accordingly.
Fig. 12. CLV 41x: Count direction of the code position CP
9. 2 Mounting the polling reflector
In order to generate the reading pulse automatically using internal reflector polling
(default setting), one of the two polling reflectors supplied (special bar code) must
be mounted opposite the CLV behind the conveyor section.
Ø
Note the maximum ranges of the two reflectors (
Fig. 13
)
Ø
Mount the polling reflector (self-adhesive) opposite the CLV (in the alignment line)
in such a way that the CLV can view the reflector freely in the gaps between the
conveyor objects and can scan it reliably (center of scan line).
The scan line of the CLV should scan the code lines of the polling reflector
vertically.
Ø
Check the polling reflector installation for
100% read quality
using the
Percentage Evaluation mode in the T
ERMINAL
option of the user interface (see
Section
10.6
). The CLV outputs the code content of the polling reflector and
signals REPO as the code type.
Function of reflector polling
In Reflector Polling pulse mode, the CLV activates the laser diode with every 20th
scan and checks whether it detects the reflector:
- if the reflector is still detected, the CLV repeates the procedure after the 20th
scan
0
CP
100