SICK CLV490 Instrukcje Operacyjne Pobierz pdf (Strona 158)

Chapter 8 Operating Instructions

CLV490 Bar Code Scanner

8-16 © SICK AG · Division Auto Ident · Germany · All rights reserved 8009993/RA61/2007-07-20

Troubleshooting

1. The "Read Result" LED default setting:

Good Read) does not light up at the end

of the reading pulse:

– continued –

• The bar code is tilted excessively with

respect to the scan line.

• The reading angles at which the bar code

appears to the CLV490 are too large.

• Bar code in total reflection zone

• Evaluation criteria for bar code

incorrect.

• Bar code quality inadequate.

• In the "CLV-Setup" program: choose the

CODE CONFIGURATION tab, DECODER section:

choose SMART decoder.

Download all changes to CLV490!

• In the "CLV-Setup" program: choose the

CODE CONFIGURATION tab, DECODER sec-

tion: choose Standard decoder.

Download temporarily to CLV490!

Start P

ERCENTAGE EVALUATION, choose

DISTANCE CONFIGURATION. Monitor read-

ing quality (reading quality > 70 %!). If

necessary, realign CLV490 and/or re-

configure distance configuration. If ok,

choose SMART D

ECODER. Download to

CLV490.

• Optimize CLV490 alignment (scan line

should strike the bar code at a skew of

approx. 15°). Use the "CLV-Setup" pro-

gram to check the quality of the read.

Start PERCENTAGE EVALUATION. See

Chapter 6.5.2 Percentage evaluation,

Page 6-41

• In "CLV-Setup" program: choose the

CODE CONFIGURATION tab, SYMBOLOGIES

section. Enable all code types (except

Pharmacode), set code lengths to F

REE.

Download temporarily to CLV490!

Start P

ERCENTAGE EVALUATION. Code type

and length are displayed in the reading

result. Enable recorded code type in the

C

ODES section and disable all other

types. Enter the code length under FIXED

on the code type tab. Download to

CLV490!

• Check: sufficient blank zones present?

Print contrast adequate? Specified print

tolerances exceeded?

In the "CLV-Setup" program: choose

R

EADING CONFIGURATION tab, READING PARA-

METERS section, START/STOP RATIO: is Auto

selected?

Perform read with reference code.

2. The CLV490 is not transferring any rea-

ding results to the host

• Reading pulse is not functioning

correctly.

• Wiring fault in data connection.

• Voltage level incorrect.

• Host interface in CLV490 parameterized

incorrectly.

• See Chapter 8.5.2 Malfunctions in Read-

ing mode: reading trigger errors,

Page 8-10

• Check wiring as shown in Fig. 5-3,

Page 5-20

• Measure voltages

• In "CLV-Setup" program: choose HOST

I

NTERFACE tab, DATA FORMAT section. Are

the interface type (hardware) and data

format correct? Check settings in INTER-

FACE PROTOCOL section.

Malfunction Possible cause Remedy

Table 8-8: Troubleshooting: result output errors in Reading mode (CLV490 in stand-alone configuration) (contd.)

1 2 ... 153 154 155 156 157 158 159 160 161 162 163 ... 269 270

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