Operating Instructions
Chapter
8
CLV 45x Bar Code Scanner
Troubleshooting
8 009 139/K949/06-06-2002
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8-3
"Host – receive fault"
The host has requested the
data output string last sent by
the CLV three times; NAK has
been issued with each
attempt.
•
Receipt of the host set
incorrectly
•
Data transfer interrupted e. g.
by cable break
•
Check the host
•
Check connecting cables and
monitor data transfer of the
host interface. To do so, select
upload from the CLV by using
the CLV-Setup user interface,
select the A
UXILIARY
INTERFACE
tab card and select H
OST
INTER
-
FACE
in the M
ONITOR
list field.
Download to the CLV!
Call up the terminal emulator.
"Host – transfer too slow"
In the CLV, data is available
for output faster than it is
transferred to the host.
•
Baud rate too low
•
Incorrect protocol type
selected
•
Protocol timeout too long
for the reading pulse frequency
Check the configuration of the
host interface
"Host – transmit fault"
The CLV cannot correctly
receive the data sent by the
host
•
Host interface of the CLV con-
figured incorrectly
•
Data transfer interrupted e. g.
by cable break
•
Check the CLV and host.
•
Check connecting cables and
monitor data transfer of the
host interface. To do so, select
upload from the CLV by using
the CLV-Setup user interface,
A
UXILIARY
INTERFACE
tab card
and select H
OST
I
NTERFACE
in
the M
ONITOR
list field. Download
to the CLV!
Call up the terminal emulator.
"Master/slave – trigger too soon"
The new reading pulse for the
master is received before its
timeout has elapsed
Timeout for the master is too long Check the coordination between
reading pulse and timeout. To do
so, select upload from the CLV by
using the CLV-Setup user inter-
face, D
EVICE
CONFIGURATION
tab
card and change the M
ASTER
TIME
-
OUT
in the CLV A
RRANGEMENT
sec-
tion.
Download to CLV!
"More than one code found"
Auto Setup was not suc-
cessful
More than one bar code was
presented to the CLV
Repeat the Auto Setup. Ensure
that only one bar code is in the
visible range of the CLV (in
particular with oscillating mirror!)
"No polls?"
Network operation:
the CLV is waiting for polls by
the CLX 200 network control-
ler
•
Data connecting cables inter-
rupted
•
CLX 200 not ready
•
Incorrect device number
parameterized
•
Inadvertently parameterized
for network mode
•
Check cables
•
Switch on CLX 200
•
Device number: Parameterize
01 to 31
•
Check the configuration of the
host interface.
To do so, select upload from
the CLV by using the CLV-
Setup user interface, H
OST
INTERFACE
tab card and check
the settings in the I
NTERFACE
PROTOCOL
section.
Download any changes to the
CLV!
Message
Meaning
Possible cause
Remedy
Table 8-1: Error messages output via the terminal interface