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Operating Instructions Chapter 6

CLV490 Bar Code Scanner

Operation

8. Present the bar code pattern from Fig. 6-1, Page 6-4 and monitor the reading results

in the Terminal Emulator window.

Note In default setting, the CLV490 operates in the autofocus mode "Minimum distance“. As a

result, the CLV490 focuses on the object that is nearest in Percentage Evaluation mode.

The view on the object with the scan line must be unobstructed, i. e. any other objects must

not protude into the autofocus space. If they do so, the autofocus mode "Differential

background“ must be selected. Alternatively a fixed focus position can be set. See Chapter

c) Parameterizing focus control, Page 6-12.

The output format of the reading result is the same as that of the Reading mode. Fig. 6-8,

Page 6-40 explains the structure and function of the reading diagnosis data

The ”Read Result” LED also provides information on the reading quality:

– The LED is extinguished if reading quality is < 30 %

– The LED blinks twice per second if the reading quality is 30 % to 70 %

– The LED blinks five times per second if the reading quality is 70 % to 90 %

– The LED is lit continuously if the reading quality is > 90 %

6.5.3 Adjusting mode

The Adjusting mode enables the center of the scan line to be optimally positioned on the

bar code. Chapter 4.3.3 Adjusting mode, Page 4-10 describes the procedure for going

about this after the Adjusting mode has been called up. The CLV490 does not output a

reading result in this mode. The "Result 1" to "Result 4" switching outputs do not become

live.

The Adjusting mode can be called up by choosing V

IEW in the menu bar, as a device

function via CLV490 (interactively), or via the Terminal Emulator.

Line scanner with oscillating mirror:

In the "Adjusting" mode, the CLV490 behaves in the following manner:

– In "Oscillating" mode (default setting: oscillating with a fixed amplitude), the CLV490

shuts of oscillation and positions the scan line under the angle CW = 50 (corresponds

to an angle of deflection below 105°). This position cannot be altered.

– In "One-Shot" mode, the CLV490 positions the scan line under the angle CW = 50

– In "Fixed Position" mode, the scan line’s selected position remains unchanged.

1. Click in the toolbar.

The Terminal Emulator window is then displayed. The CLV490 is in the Reading mode.

2. In the D

EVICE MODE section, choose ADJUSTING MODE.

The "Device Ready" LED is extinguished. The CLV490 cancels the Reading mode and

blanks the red scan line as of reading angle RA = 50 to reading angle RA = 100.

3. Choose R

EADING MODE to exit the Adjusting mode.

The CLV490 returns to the Reading mode and the "Device Ready" LED lights up.

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SICK CLV490 Istruzioni per gli Interventi Pagina 121

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