
Chapter 8 Operating Instructions
CLV 490 Bar Code Scanner
8-4
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SICK AG · Division Auto Ident · Germany · All rights reserved 8 008 796/0000/25-06-2002
Troubleshooting
"Slave string faulty"
Data transmission error
between a slave and the mas-
ter.
Data connecting cable
interrupted.
If the error continues to occur,
check the connecting cable
between all devices.
"Wrong number of slaves"
During the master timeout, the
master receives more or fewer
reading results from the slaves
than expected from the num-
ber of slaves that the master
has entered.
•
The parameterized number of
slaves does not match the ac-
tual number of slaves connect-
ed
•
Timeout for the master is too
short
•
The data connection between
the slaves has been interrupt-
ed.
•
Check the entered number of
slaves.
To do so, upload from the CLV
using the "CLV-Setup" pro-
gram, choose the D
EVICE
C
ONFI
-
GURATION
tab and check the
N
UMBER
OF
S
LAVES
in the S
CAN
-
NER
A
RRANGEMENT
section.
Download any changes to the
CLV!
•
As above, but check the time-
out defined for the master
•
Check the cables between the
slaves
"Wrong parameters –
master/slave"
After selection of the master/
slave function, individual param-
eter values, which are not com-
patible with the automatic
settings defined for this function
by the CLV, were changed sub-
sequently
Deviations from the following set-
tings:
•
Test string: no (slaves)
•
Aux. input: no (slaves)
•
Triggermode: serial interface or
switching input
•
RK 512: without reaction tele-
gram
Correct the settings on the
D
ATA
STRING
,
T
ERMINAL
INTERFACE
,
D
EVICE
CONFIGURATION
and
H
OST
INTERFACE
tabs in the "CLV-
Setup" program.
Download any changes to the
CLV!
Message Meaning Possible cause Remedy
Table 8-1: Error messages output on the terminal interface
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