Operating Instructions
Chapter
8
CLV 490 Bar Code Scanner
8 009 993/O824/20-12-2004
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8-11
Troubleshooting
2. Trigger mode:
Serial interface
The CLV 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 CLV.
•
Incorrect command used.
•
The CLV is not receiving any command
strings on the data interface to start the
reading interval.
•
In the "CLV-Setup" program: choose the
D
EVICE
C
ONFIGURATION
tab, R
EADING
T
RIG
-
GER
S
OURCE
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
C
ONFI
-
GURATION
tab, click the R
EADING
T
RIGGER
P
ARAMETERS
button, S
ERIAL
I
NTERFACE
sec-
tion).
For reading mode "Tracking":
only start command required.
•
Check data connection to host.
In the "CLV-Setup" program: choose the
H
OST
I
NTERFACE
tab.
In D
ATA
F
ORMAT
section: are the correct
interface type (hardware) and data for-
mat selected?
I
NTERFACE
P
ROTOCOL
section: are the cor-
rect start and stop characters selected?
Use the "CLV-Setup" program to check
the host command strings: choose
A
UXILIARY
I
NTERFACE
tab. Choose
M
ONITOR
H
OST
I
NTERFACE
function.
See
Chapter 6.5.10 Monitor Host Inter-
.
Download temporarily to the CLV.
3. Trigger mode:
Object Polling
The CLV does not trigger automatically:
– 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 CLV.
•
Incorrect critera for automatic object
detection parameterized in the CLV.
•
Incorrect position of the CLV referred
to the object detection space para-
meterized in the CLV.
•
In the "CLV-Setup" program: choose the
D
EVICE
C
ONFIGURATION
tab, R
EADING
T
RIG
-
GER
S
OURCE
section: is "object polling"
selected?
•
In the "CLV-Setup" program: choose the
D
EVICE
C
ONFIGURATION
tab, click the O
BJECT
P
OLLING
P
ARAMETERS
button:
P
OLLING
PROPERTIES
section: are the cor-
rect values selected?
O
BJECT
D
ETECT
S
PACE
section: are the cor-
rect values selected?
If necessary: are the correct S
CAN
ANGLE
and/or O
SCILLATING
ANGLE
LIMITATION
se-
lected?
•
In the "CLV-Setup" program: choose the
D
EVICE
C
ONFIGURATION
tab, click the S
CAN
-
NER
P
OSITION
P
ARAMETERS
button:
are the correct values selected?
Malfunction
Possible cause
Remedy
Table 8-6: Troubleshooting: reading trigger errors in Reading mode (CLV in stand-alone configuration) (contd.)