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
8-1
8
Troubleshooting
8.1 Overview of the possible errors and malfunctions
8.1.1 Mounting errors
•
CLV aligned incorrectly to the object with the bar code (e. g. blanking)
•
Reading-pulse sensor positioned incorrectly
•
With focal position changeover: Sensor for object height detection positioned
incorrectly
8.1.2 Faults during the electrical installation
•
Interfaces on the CLV wired incorrectly (wiring error in AMV/S 40)
•
Host interface on AMV/S 40 configured incorrectly
8.1.3 Parameterization errors
•
Functions not adjusted to local conditions, e. g. communication parameters on the host
interface are set incorrectly
•
Technical limits of the device exceeded, e. g. relationship between the scanning
frequency and the reading distance
8.1.4 Faults during operation
•
Laser timeout for laser diode expired
•
Device fault (hardware/software)
8.2 Monitoring error and fault signs
The CLV is self-monitoring:
•
After the supply voltage has been switched on, the CLV automatically carries out a self-
test, in which it checks important hardware components, before it is initialized (para-
meter record loaded and device functions initialized). The self-test can be repeated at
any time after the reading mode has been canceled.
For the call-up refer to the
Chapter 6.5.9 Self-test, Page 6-28
.
•
If the CLV detects an error during the self-test/self-diagnosis, it outputs the error status
ST = 3 via the host interface. Prerequisite: The error status is enabled for transfer. In
the default setting transfer is disabled.
The CLV displays the diagnosed error in code form as a numerical combination in the
4th field from the bottom left in the status bar of the CLV-Setup user interface via the
terminal interface (
Table 8-1
).
•
While it is in operation, the CLV constantly monitors the laser diode and speed of the
polygon mirror wheel. In addition, a watchdog circuit reacts to incorrect device states.
•
A timer automatically de-activates the laser diode in reading mode at the "Sensor input"
and "Serial interface" trigger mode 10 minutes (default setting) after the beginning
of a lasting reading pulse. However, it does not end the reading interval. The CLV out-
puts the following message via the terminal interface: "
Laser safety timeout"
. The
reading pulse is to be terminated by resetting the trigger signal. The next reading pulse
re-activates the laser diode.
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