SICK CLV 45 Series, Operating Instructions Manual

Page: 41 / 174

Operating Instructions Chapter 4
CLV 45x Bar Code Scanner
Installation
8 009 139/K949/06-06-2002 © SICK AG · Division Auto Ident · Germany · All rights reserved
4-13
Parameterizing an external sensor as the trigger source (not at the default setting):
1. Select the D
EVICE CONFIGURATION
tab card.
2. Click on the E
DIT READING TRIGGER
command button.
The E
DIT READING TRIGGER
dialog box is opened.
3. Select the S
ENSOR INPUT
(
ACTIVE HIGH
) radio button and confirm the dialog box.
4. Carry out the download to the CLV. To do so, click on in the toolbar.
The D
OWNLOAD PARAMETERS
dialog box is opened.
5. Confirm the dialog box with the saving option P
ERMANENT
.
The CLV operates with the "Sensor 1" switching input as the external trigger source.
Current in the input starts the reading pulse.
4.4.3 Mounting the sensor for detecting the object distance
The CLV provides a dynamic focal position changeover for serial covering of a large reading
range. To this purpose a changeover with a maximum of 2 stages can be implemented via
the "Sensor 2" switching input. Fig. 4-13 shows an example for reading from above. A
photoelectric reflex switch is, for example, used for the detection of the object distance. This
application is suitable for such object sizes whose difference can be covered by 2 changeo-
ver ranges. The distance sensor is to be positioned so that these object sizes are
classified clearly and two overlapping reading ranges arise which can be formed with the
depths of field of the CLV. The two distance configurations (reading ranges) are assigned
from a maximum of 8 configurations by means of the internal assignment table (combina-
torics). In the default setting the "Sensor 2" switching input is selected for the focal position
changeover.
1. Read the depths of field of the CLV for the specified resolution of the bar code manually
from the diagrams in Chapter 10.2.4 Depths of field for CLV 450 line scanner (front-
end reading window), Page 10-5 or Chapter 10.2.5 Depths of field for CLV 450 line
scanner with oscillating mirror (side-end reading window), Page 10-9 . Search for and
note suitable focal positions for overlapping reading ranges.
– or –
Have the depth of field determined automatically by means of the CLV Assistant in the
CLV-Setup user interface (values are read automatically into the tab cards).
Fig. 4-13: CLV 44x: Installation example for positioning the object distance detection
Reading
distance
DC 1
DC 2
DC = Distance configuration
h 2
h 1
Object distance