Chapter
4
Operating Instructions
CLV 490 Bar Code Scanner
4-12
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8 009 993/O824/20-12-2004
Installation
be selected. Alternatively a fixed focus position can be set. See
.
Installing the reading pulse sensor for start/stop mode:
1.
Mount the reading pulse sensor.
2.
Connect the reading pulse sensor to the "Sensor (1)" switching input of the CLV via the
CDB 420 or CDM 490 Connection Module (see
Chapter 5.5.7 Connecting the "Sensor"
).
3.
Connect the CLV to the CDB 420 or CDM 490 Connection Module and switch on the
power supply to the module (see
Chapter 5.5.3 Connecting the supply voltage,
).
After it has started, the CLV confirms that the self-test was successfull and switches to
Reading mode ("Device Ready" LED lights up).
4.
Connect the PC to the terminal interface of CLV. To do so, connect a 3-core RS 232
data cable (null modem cable) to the internal 9-pin "Aux" plug of the CDB 420 or
CDM 490 (see
Chapter 5.5.5 Connecting the CAN interface, Page 5-22
5.
Start Windows and the "CLV-Setup" program (see
Chapter 10.6.3 Starting CLV-Setup,
).
6.
From the V
IEW
menu, choose R
EADING
M
ODE
.
The Terminal Emulator is launched. The CLV is in Reading mode (default: SMART
decoder).
Monitor the reading result during each of the subsequent steps!
Line scanner with oscillating mirror:
In default setting, the CLV deflects the scan line (default setting) about the fixed position
CW = 50 with a frequency of 1 Hz at a max. angle of
±
20
°
(
±
40 CW).
50 CW corresponds to an angle of emergence of 105
°
.
7.
Move objects with bar codes into the CLV reading field manually under realistic condi-
tions and check whether the reading result and trigger pulse are correct.
8.
Repeat the procedure with the conveyor switched on. Check whether the reading
procedure is synchronized with the objects.
Parameterizing an external sensor as a trigger source:
These settings are not required if the CLV is operated with the default configuration.
1.
Choose the D
EVICE
C
ONFIGURATION
tab.
2.
In the R
EADING
T
RIGGER
S
OURCE
section click the option S
ENSOR
I
NPUT
(A
CTIVE
H
IGH
).
3.
Download the settings to the CLV by clicking
in the toolbar.
The D
OWNLOAD
P
ARAMETERS
dialog box is then displayed.
4.
Confirm the dialog box by choosing P
ERMANENT
.
The CLV operates with the "Sensor" switching input as an external trigger source. The
reading pulse starts when the input is energized (high).
4.4.3
Installing incremental encoder
In the reading mode "Tracking", an incremental encoder is required for determining which
bar codes belong to which objects. The encoder is also required to separate bar codes of
the same symbology with identical content.
1.
Install the incremental encoder (e. g. no. 2 022 714) near the CLV but in front of it,
preferably against the direction of the conveyor belt. The increment pulses must
originate from the area of the conveyor belt which the CLV is reading.