SICK Omni CLX 490-0010, Operating Instructions Manual

Page: 96 / 152

Chapter 8 Operating Instructions
Compact OMNI Scanner
8-12
© SICK AG · Division Auto Ident · Germany · All rights reserved 8 009 237/0000/07-05-2002
Troubleshooting
8.5.3 Malfunctions in Reading mode: result output errors
¾
Check whether the "Device Ready" LED lights up.
If the LED does not light, see Table 8-5, Page 8-10 .
Here: number of bar codes to be read = 1
Malfunction Possible cause Remedy
1. The "Read Result" LED (default setting:
Good Read) does not light up at the end
of the reading pulse.
– The "Result 2" switching output
(default setting: Good Read) is not
outputting a pulse
– The CLX outputs status ST=2 in the
reading result on the host interface (if
ST is enabled for the separator; this is
not selected in the default setting)
•
Read not successful, since there was no
bar code in the reading field during the
reading pulse.
•
Scan line positioned incorrectly.
•
Bar code presented at incorrect reading
distance.
•
The presented bar code’s module width
cannot be read by the CLX type being
used.
•
With event-controlled focus control:
wrong focus position in Distance Config-
uration choosen.
•
With event-controlled focus control:
trigger source parameterized incorrectly.
•
The reading angles at which the bar code
appears to the CLX are too large.
•
Synchronize read with presence of an
object in reading field. See
Chapter 8.5.2
Malfunctions in Reading mode: reading
trigger errors, Page 8-11
.
•
Align CLX. Is bar code at center of scan
line? Check the reading quality with the
"CLV-Setup" software. Choose P
ERCENTA
-
GE
E
VALUATION
. See Chapter 6.5.2 Per-
centage evaluation, Page 6-16 .
•
Check whether reading distance of bar
code is in the specified reading range?
•
Present a bar code with an acceptable
module width. See
Chapter 9 Technical
data, Page 9-1 .
•
In the "CLV-Setup" program: choose the
R
EADING
C
ONFIGURATION
tab, click the D
I
-
STANCE
C
ONFIGURATION
/A
SSIGNMENT
T
ABLE
button. Does the focus position match
the distance of the object?
•
In the "CLV-Setup" program: choose the
R
EADING
C
ONFIGURATION
tab, in the F
OCUS
T
RIGGER
section.
a) Trigger source: "Switching input":
Check functional assignment of IN 3 and
IN 4 and connection of the sensors. See
Fig. 5-5, Page 5-17 .
b) Trigger source: "Serial interface":
Check the data connection to the host.
Use the "CLV-Setup" program to check
the host command strings: choose A
UXI
-
LIARY
I
NTERFACE
tab. Choose M
ONITOR
H
OST
I
NTERFACE
function. See
Chapter 6.5.6 Monitor Host Interface,
Page 6-20
. Download temporarily to
CLX!
c)Trigger source: Timer:
Check switchover time.
•
In the "CLV-Setup" program: choose the
C
ODE
C
ONFIGURATION
tab, D
ECODER
section: choose Standard decoder.
Download temporarily to CLX! Start
P
ERCENTAGE
E
VALUATION
, choose D
ISTANCE
C
ONFIGURATION
. Monitor reading quality
(reading quality > 70%!). If necessary,
realign CLX and/or reconfigure distance
configuration. If ok, choose SMART
DECO
-
DER
. Download to CLX.
Table 8-7: Troubleshooting: result output errors in Reading mode