Operating instructions
Chapter
8
ICR 84x Image Code Reader
Troubleshooting
8 010 961/0000/10-05-2005
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SICK AG · Division Auto Ident · Germany · All rights reserved
8-1
8
Troubleshooting
8.1
Overview of errors and malfunctions which could occur
8.1.1
Installation errors
•
ICR positioned incorrectly in reading distance
•
The code is not completely in the reading area
•
Reading pulse sensor positioned incorrectly (e.g. internal reading interval starts too late
or stops too soon)
8.1.2
Electrical connection errors
•
Interfaces on the ICR connected incorrectly (wiring error in the CDB 420 or CDM 420)
8.1.3
Parameterization errors
•
Functions not adapted to local conditions, e.g. communication parameters of the
host interface set incorrectly
•
Technical limits of device not taken into consideration, e.g. resolution-specific depth of
field
8.1.4
Malfunctions during operation
•
Timeout for illumination field elapsed
•
Device error (hardware/software)
8.2
Monitoring errors and malfunctions
The ICR is self-monitoring:
•
After the power supply has been switched on, the ICR automatically carries out a self-
test, in which it checks important hardware components, before it is initialized
(parameter set loaded and device functions initialized). The self-test can be repeated
at any time by cancelling Reading mode.
Chapter 6.5.8 “Self-test“, Page 6-42
•
If the ICR detects an error during the self-test or at any other time, it outputs the error
status ST = 3 via the host interface. Prerequisite: the error status is enabled for
transmission. By default, transfer is blocked.
The ICR displays the diagnosed errors in encoded form as a number combination in the
fourth field from the left on the bottom on the status line of the CLV Setup user interface
via the auxiliary interface (
).
•
During operation, the ICR constantly monitors the operation of its laser diodes. In
addition, a watchdog circuit responds to error statuses.
•
A timer automatically deactivates the illumination LEDs in Reading mode (“Sensor input“
and “Serial interface“ trigger mode) if the reading interval has not ended after 10
minutes (default setting). However, it does not end the reading interval.
In this case, the ICR outputs the following message to the auxiliary interface:
“
Illumination safety timeout
“.
The reading pulse must be terminated by resetting the pulse signal. The next reading
pulse switches on the laser diodes and, thus, the illumination line again.