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Operating Instructions
Chapter
3
CLV490 Bar Code Scanner
8009993/RA61/2007-07-20
©
SICK AG · Division Auto Ident · Germany · All rights reserved
3-11
Product description
3.3.2
Function of the LEDs
Four LEDs indicate the operating status, activity of the laser diode, reading result status, and
data transfer on the host interface. The LEDs are located on the rear of the device (
If the optional external parameter memory is connected, the LEDs also indicate whether the
memory was successfully accessed.
The meaning of the LEDs in the various operating modes/functions is shown in
CLV490 without external parameter memory:
Fig. 3-6:
LEDs
Device Ready
Sensor
Read Result
Data
Operating mode LED
Display
Function
Start
Device Ready
Green
•
Lights up after power-up if the self-test was successful
Subsequent behavior depends on selected start option:
S
tart option: S
TART
WITH
EXTERNAL
P
ARAMETERS
(default)
•
Lights up constantly (CLV490 has loaded internal parameter set)
Start option: S
TART
WITH
INTERNAL
P
ARAMETERS
•
Lights up constantly (CLV490 has loaded internal parameter set)
Start option: S
TART WITH
C
OPY
I
NTERN ->
E
XTERN
•
Blinks constantly together with the "Read Result" LED
1)
(CLV490 has loaded internal parameter set)
Read Result
Green
S
tart option: S
TART WITH
C
OPY
I
NTERN ->
E
XTERN
•
Blinks constantly together with the "Device Ready" LED
1)
Reading mode
Device Ready
Green
•
Lights up constantly
•
Extinguishes with new operating mode/function
Sensor
Green
•
Lights up if reading diode is active
(The laser diode is activated/deactivated by reading pulse)
•
Lights up constantly in Free-running mode, since laser diode is always active
Read Result
Green
LED is linked to the "Result 2" switching output and indicates the selected result
status for the defined pulse duration of the output.
•
Lights up after a successful read (default: Good Read)
•
Lights up if the match code comparison is active, the bar code read matches the
specified match code(s) and the corresponding result status output is selected
for the "Result 2" output
Data
Yellow
•
Flickers when the CLV490 transfers data to the host on the host interface
1) Set the start option to S
TART
WITH
THE
INTERNAL
P
ARAMETERS
on the D
EVICE
C
ONFIGURATION
tab in the "CLV-Setup" program. Download to CLV490!
Table 3-2: Meaning of LEDs: CLV490 without external parameter memory
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