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Barcode reader VB34
Introduction
Da
te
of
issue
06/
1
3
/2005
13
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
Fuchs Group • Tel.: G49 621 776-0 • USA +1 330 4253555 • Sin65 67799091 • Internet http://www.pepperl-fuchs.com
5.2
Available models
The VB34 scanner is available in various versions, which differ in the following
features:
• Optical system (head)
• Decoder (base assembly)
The following models are available:
5.3
Displays
The VB34 decoder base assembly has an LCD display for system messages and
menus of the configuration software. The three keys on the side of the display are
used for navigating in the menus of the configuration software (Figure 3.3).
The three status LEDs have the following functions:
Power ON
(Red)
indicates that the reader is switched on (Figure 3.3)
Phase ON
(Yellow)indicates that the presence sensor is activated (Figure 3.3).
TX Data
(Green) indicates that the primary serial interface transmits data
without errors (Figure 3.3).
5.4
Oscillating mirror models
Oscillating mirror models are used when large reading areas must be covered, mainly
in the case of horizontal barcodes (picket fence barcodes).
The VB34 contains a special optical head with an integrated oscillating mirror, which
is driven by a linear motor. Speed, precision, repeatability and reliability of this drive
technology guarantee a high performance.
The new oscillating mirror is completely software-controlled and programmable. The
configuration™ software makes it possible to adjust the speed of the linear motor (and
thus the oscillation frequency) as well as the upper and lower end position for the
oscillation process as an angle.
If the oscillating mirror is programmed to read barcodes at a very small angle, position
the reader in such a way that the visual angle is at least 10° (Chapter 6.4). This angle
mirrors the smallest deflection or the scanning line that is closest to the horizontal. All
other scanning lines have a visual angle of more than 10°. This prevents a direct
reflection of the laser beam emitted by the reader.
VB34 - xxxx - OM - y
Max. distance
Decoder model (base assembly)
__
= master/slave
Optical model (head)
P
= Profibus
_
= Standard
B12 = Ethernet
OM = Oscillating mirror
B7
= DeviceNet