SICK CLP 100, Operating Instructions Manual

Page: 29 / 44

Operating Instructions Chapter 8
CLP 100 Bar Code Reader
Troubleshooting
8 008 912/0000/21-08-2002 © SICK AG · Division Auto Ident · Germany · All rights reserved
29
8.2 Troubleshooting table
Aids during troubleshooting:
•
These operating instructions
•
Multimeter for measuring voltage and current
Fault Possible cause Check Remedy
1. When the supply voltage is
applied to the CLP 100:
The LEDs do not light up
(LEDs must light up for
three seconds after
voltage is applied if the
self-test is successful) 1.1 CLP 100 without supply
voltage
1.1 Check the supply voltage 1.1 Check the wiring and
measure the supply
voltage (DC 5 V
± 5 %)
1.2 CLP 100 has diagnosed a
device fault during the
self-test
1.2 Switch the device off and
on again. Do the LEDs light
up?
1.2 If the LEDs do not light up,
contact the SICK service
(
refer to Section 8.3,
Page 30)
2. CLP 100 cannot be
started via the external
sensor, Scan field of the
CLP 100 (red light) is not
displayed
or
LEDs do not light up after
an executed signal for
reading
2.1 External sensor connected
incorrectly
2.1 Check the wiring of the
external sensor
2.1 Measure the output signal
of the external sensor and
the input signal at the
CLP 100 (active low)
2.2 Photoelectric switch not
aligned to the reflector or
Optical path covered (light
scanner or inductive
sensor is not dampened)
2.2 Check the external sensor
for functionality and a free
optical path
2.2 Re-align the external
sensor
2.3 CLP 100 does not receive
command string for
pulsing via the host
interface
2.3 Check the data
connection between the
host and the CLP 100.
Check the command
strings of the host
computer
2.3 Carry out the connection
in accordance with Section
5.4, Page 16 and observe
the pin assigment. Carry
out an upload in the CLP
Setup. On the H
OST
I
NTERFACE
tab card set the
data format, protocol, start
and stop characters, baud
rate correctly.
Carry out the download to
the CLP 100
3. Green LED does not light
up after the end of the
reading pulse (reading not
successful)
3.1 No bar code in the reading
area during the reading
process
3.1 Check the interval
between the reading pulse
and presence of the bar
code in the reading area
3.1 Refer to Item 2
3.2 Scan field does not
contact the bar code
3.2 Check the adjustment. Is
the bar code in the middle
of the scan field?
3.2 Readjust the CLP 100
( refer to Section 4.3.2,
Page 14 )
3.3 Reading distance incorrect 3.3 Check the reading
distance
3.3 Set the correct reading
distance, but take the
module width into
consideration (
refer to
Section 10.3, Page 38 )
3.4 Evaluation criteria for the
code type set incorrectly
3.4 Check the code type and
code length
3.4 Enter correct code type in
CLP Setup. Carry out
download to CLP 100
3.5 Reading angle under
which the bar code
appears is too large
3.5 Check the reading angle 3.5 Readjust the CLP 100
while ensuring that the
maximum reading angle is
observed (
refer to Figure
4-4, Page 12 )
Tab. 8-1: Troubleshooting table