SICK CLV490 Instructions d'exploitation télécharger pdf (Page 149)

Operating Instructions Chapter 8

CLV490 Bar Code Scanner

Troubleshooting

8.4 ST error status in the reading result of a bar code

Value Meaning Possible cause Remedy

0 Good Read. – Not applicable.

2 No bar code of the enabled code type

found according to the evaluation

criteria.

• No bar code in the CLV490‘s reading

field during the reading pulse

• Code type/length in the CLV490 not

enabled for decoding

• Reading window obstructed/dirty

• Synchronize the pulse of the CLV490

with the entry of a bar code into the

reading field.

• Correct the code configuration para-

meters.

• Check the reading window.

3 Device fault. Device fault. Call up the self-test. See Chapter 6.5.13

Self-test, Page 6-57.

If result ≠ 15000: Contact the SICK

Service department.

5 Required number of successful multiple

reads for the bar code not reached.

• Conveyor speed of the object is too

high

• Scanning frequency is too low

• Ladder-type arrangement for bar

code relative to the conveyor direc-

tion: code height (bar length) too poor

• Print quality too poor

• Check the conveyor speed.

• Adjust the scanning frequency.

• Check the code height.

• Check the print quality.

6Master:

Number of slave reading results does

not match the parameterized number of

slaves.

• The parameterized number of slaves

does not match the actual number of

slaves available

• The master timeout is too short

• The data connection between the

slaves and/or the master has been

interrupted

• Check the entered number of slaves.

• Check the master timeout setting.

• Check the cables between the slaves

and the master.

7 The source of the reading result is the

auxiliary input via the auxiliary interface.

The bar code was not detected by the

reading function of the CLV490, but was

entered subsequently with the auxiliary

function of the auxiliary interface and

sent to the host in a separate data

string.

–

The O

UTPUT FILTER function is activated

for the code comparison. The CLV490

has detected valid bar codes. However,

these do not match the active match

code(s).

The scanned object does not have a bar

code that matches the specified match

code.

–

AThe CHECK MAX. NUMBER OF CODES

function is active. The number of valid

bar codes detected by the CLV490 in

Reading mode exceeds that specified

under N

UMBER OF CODES: MAXIMUM.

It repeatedly outputs the defined error

string until the number specified under

UMBER OF CODES: MINIMUM is reached.

One object in a set of objects with a

constant number of bar codes, for

example, contains more bar codes than

defined in the application.

This message is used to indicate

errors on the objects (e. g. check

whether objects are homogeneous:

mixed with incorrect objects).

DThe C

ODE 32 evaluation option is acti-

vated for Code 39. The CLV490 is

attempting to interpret 6-digit C39 bar

codes as C32 bar codes (output as

9-digit decimal values).

The read 6-digit bar code is not a C32

bar code. The CLV490 outputs the defi-

ned error string instead.

–

Table 8-4: Meaning of the ST error status in the reading result

1 2 ... 144 145 146 147 148 149 150 151 152 153 154 ... 269 270

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SICK CLV490 Instructions d'exploitation Page 149

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