SICK Advanced Series

Operating Instructions Chapter 8
CLV490 Bar Code Scanner
8009993/RA61/2007-07-20 © SICK AG · Division Auto Ident · Germany · All rights reserved 8-11
Troubleshooting
2. Trigger mode:
Serial interface
The CLV490 cannot be clocked:
– the "Sensor" LED does not light up
– the red scan line does not appear
Reading mode "Start/stop" or
"Tracking ":
• Incorrect reading pulse source para-
meterized in the CLV490.
• Incorrect command used.
• The CLV490 is not receiving any com-
mand strings on the data interface to
start the reading interval.
• In the "CLV-Setup" program: choose the
DEVICE CONFIGURATION tab, READING TRIG-
GER SOURCE section: is "serial interface"
selected? Serial Interface section: is the
trigger type correct?
• Use correct commands.
Standard trigger:
Start: <START> 21 <STOP>
Stop: <START> 22 <STOP>
– or –
defined single characters (D
EVICE CONFI-
GURATION tab, click the READING TRIGGER
PARAMETERS button, SERIAL INTERFACE sec-
tion).
For reading mode "Tracking":
only start command required.
• Check data connection to host.
In the "CLV-Setup" program: choose the
H
OST INTERFACE tab.
In DATA FORMAT section: are the correct
interface type (hardware) and data for-
mat selected?
I
NTERFACE PROTOCOL section: are the cor-
rect start and stop characters selected?
Use the "CLV-Setup" program to check
the host command strings: choose
A
UXILIARY INTERFACE tab. Choose
MONITOR HOST INTERFACE function.
See Chapter 6.5.10 Monitor Host Inter-
face, Page 6-54.
Download temporarily to the CLV490.
3. Trigger mode:
Object Polling
The CLV490 does not trigger automati-
cally:
– the "Sensor" LED does not light up
– the red scan line does not appear
Reading mode "Start/stop":
• Incorrect reading pulse source para-
meterized in the CLV490.
• Incorrect critera for automatic object
detection parameterized in the CLV490.
• Incorrect position of the CLV490 re-
ferred to the object detection space
parameterized in the CLV490.
• In the "CLV-Setup" program: choose the
D
EVICE CONFIGURATION tab, READING TRIG-
GER SOURCE section: is "object polling"
selected?
• In the "CLV-Setup" program: choose the
D
EVICE CONFIGURATION tab, click the OBJECT
P
OLLING PARAMETERS button:
POLLING PROPERTIES section: are the cor-
rect values selected?
O
BJECT DETECT SPACE section: are the cor-
rect values selected?
If necessary: are the correct S
CAN ANGLE
and/or OSCILLATING ANGLE LIMITATION se-
lected?
• In the "CLV-Setup" program: choose the
DEVICE CONFIGURATION tab, click the SCAN-
NER POSITION PARAMETERS button:
are the correct values selected?
Malfunction Possible cause Remedy
Table 8-6: Troubleshooting: reading trigger errors in Reading mode (CLV490 in stand-alone configuration) (contd.)
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