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Operating Instructions

CLV490 Bar Code Scanner

Figures and tables

Figures

Fig. 2-1: Laser warning labels on the CLV490............................................................................2-3

Fig. 3-1: Design of the CLV490 ........................................................................................................3-5

Fig. 3-2: Block diagram: CLV490 functions..................................................................................3-6

Fig. 3-3: Optimization of the depth of field for the object .......................................................3-7

Fig. 3-4: Dynamic focus control: classification of the reading range in

distance configurations.......................................................................................................3-8

Fig. 3-5: Reading modes of the CLV490 in stand-alone configuration..............................3-9

Fig. 3-6: LEDs........................................................................................................................................3-11

Fig. 4-1: Line scanner: replacing the laser warning labels......................................................4-2

Fig. 4-2: Line scanner: position of the securing threads on the CLV490.........................4-3

Fig. 4-3: Line scanner: Mounting possibilities of the CLV490...............................................4-3

Fig. 4-4: Scanning methods: alignment with bar code and conveyor direction..............4-4

Fig. 4-5: Definition of the reading distance "a" and of the aperture angle a...................4-4

Fig. 4-6: Line scanner: Reading angle between the scan line and the bar code...........4-5

Fig. 4-7: Avoiding surface reflections: Angle between the emitted light and the

bar code (tilted away from the vertical axis) ..............................................................4-5

Fig. 4-8: Count direction of the reading angle RA in the scan line and of the

code angle CW for the oscillating mirror ......................................................................4-6

Fig. 4-9: Line scanner: scan line in Adjusting mode...............................................................4-10

Fig. 4-10: Line scanner: mounting example for the external reading pulse sensor .....4-11

Fig. 4-11: Mounting example for object distance detection..................................................4-13

Fig. 5-1: Block diagram: Connection of the CLV490 to the CDB420

connection module...............................................................................................................5-3

Fig. 5-2: Block diagram: Connection of the CLV490 to the CDM490

connection module...............................................................................................................5-5

Fig. 5-3: Connecting the host interface.......................................................................................5-20

Fig. 5-4: Connecting the auxiliary interface................................................................................5-21

Fig. 5-5: Connections of the "Sensor" switching input..........................................................5-22

Fig. 5-6: Connections of the "IN 0" to "IN 4" switching inputs ..........................................5-23

Fig. 5-7: Connections of the "Result 1" to "Result 4" switching outputs.......................5-26

Fig. 6-1: Bar code pattern (Code 39; module width 0.35 mm (11.8 mil);

Print ratio 2:1) ........................................................................................................................6-4

Fig. 6-2: Narrowing the reading space using limit values.....................................................6-10

Fig. 6-3: Narrowing the autofocus range using limit values ................................................6-15

Fig. 6-4: Oscillating mirror: "Oscillating with fixed amplitude" mode ................................6-18

Fig. 6-5: Oscillating mirror: "Oscillating with variable amplitude" mode..........................6-19

Fig. 6-6: One-Shot: Object tracking (bar code read from front).........................................6-20

Fig. 6-7: CLV-Setup: Displaying the reading result of the termianl interface

in the Terminal Emulator .................................................................................................6-39

Fig. 6-8: Reading result of the auxiliary interface: structure for "Good Read" .............6-40

Fig. 6-9: Reading result of the auxiliary interface: structure for "No Read" ..................6-40

Fig. 6-10: CLV-Setup: Displaying the percentage evaluation in the Terminal

Emulator ................................................................................................................................6-42

Fig. 6-11: CLV-Setup: Dialog window for running the background teach-in.....................6-44

Fig. 6-12: CLV-Setup: Display of th learned background........................................................6-45

Fig. 6-13: Appearance of scan line in the "Show RA-limits" mode .....................................6-46

Fig. 6-14: CLV-Setup: Example of output in the "Background Analysis" dialog box.....6-47

Fig. 6-15: CLV-Setup: Selection of the signals to be displayed in I/O Monitoring.........6-49

Fig. 6-16: CLV-Setup: Example of output in the "I/O Monitoring" dialog box..................6-50

Fig. 6-17: CLV-Setup: "Operating Data" dialog box...................................................................6-53

Fig. 6-18: CLV-Setup: Displaying the reading result of the host interface in the

Terminal Emulator with direction identifier at the beginning (in this case:

O = Output) ..........................................................................................................................6-55

Fig. 6-19: CLV-Setup: Displaying the self-test result in the Terminal Emulator ..............6-57

Fig. 7-1: Cleaning the reading window............................................................................................7-2

Fig. 7-2: Cleaning the external optical sensors (reading pulse generator,

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