SICK CLV490 Instrukcje Operacyjne Pobierz pdf (Strona 157)

Operating Instructions Chapter 8

CLV490 Bar Code Scanner

Troubleshooting

1. The "Read Result" LED (default setting:

Good Read) does not light up at the end

of the reading pulse:

– continued –

Autofocus:

• An obstacle in the reading area is closer

to CLV490 than the object carrying the

bar code(s). The CLV490 focuses on the

obstacle and not on the object (autofo-

cus mode incorrectly parameterized).

• Autofocus parameters incorrectly

parameterized.

Event-controlled focus control:

• Wrong focus position in Distance

Configuration choosen.

• CLV490 does not switch over the focus

position: trigger source incorrectly pa-

rameterized.

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

EADING CONFIGURATION tab, AUTOFOCUS

section: "Differential background" select-

ed?

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

READING CONFIGURATION tab, AUTOFOCUS

section: click the A

UTOFOCUS PARAMETERS

button, click the AUTOFOCUS LIMITS PARAM-

ETERS button: are the values for limita-

tions and/or the autofocus space

correct?

Is the autofocus range within the limits of

the parameterized reading range?

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

EADING CONFIGURATION tab, click the DI-

STANCE CONFIGURATION button. Does the

focus position match the distance of the

object?

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

READING CONFIGURATION tab, FOCUS CON-

TROL section:

a) Trigger source "Inputs/Serial":

Check functional assignment of "IN 3"

and "IN 4" and connection of the sen-

sors. See Fig. 5-6, Page 5-23

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 INTERFACE tab. Choose MONITOR

HOST INTERFACE function. See

Chapter 6.5.10 Monitor Host Interface,

Page 6-54.

Download temporarily to CLV490!

c)Trigger source: Timer:

Check switchover time referred to the

start of reading interval

d) Line scanner with oscillating mirror:

Optional "Oscillating Mirror Extrema“ se-

lected?

Malfunction Possible cause Remedy

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

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 269 270

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