Chapter
3
Operating Instructions
Compact OMNI Scanner
3-6
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8 009 237/0000/07-05-2002
Product description
3.2.2
Event-controlled dynamic focus control
As an alternative to the autofocus function, the CLX can switch its focus position in response
to certain events and thus dynamically cover a large reading range. A maximum of eight
reading ranges can be defined as distance configurations for this purpose and approached
consecutively in reading mode (see
The switch over takes place in response to changes in the object distance (with reads from
above: object height detection). The trigger source for the switchover is a signal combination
at the "IN 0... IN 4" switching inputs, a command on the host interface/terminal interface or
the integrated timer (e. g. for search mode). The distance configurations are assigned to the
swichover sequence by means of a programmable assignment table. The distance mea-
surement of the autofocus function can additionally be used to define the distance configu-
rations.
3.2.3
Additional components
Heater
The CLX can be permanently equipped with a heater for applications involving temperatures
up to max. –30
°
C (e. g. in a freezer).
The design, technical data, and power-up behavior of the CLX are described in
External parameter memory
The external parameter memory is located in a connector cover which, when mounted,
covers the two electrical terminals on the CLX (IP 65). The parameter memory saves you
time when a CLX is replaced locally by providing a copy of the current parameter set. In other
words, you do not have to configure the new device.
For information on applications and operating procedures, see
operating the external parameter memory, Page 10-8
Fig. 3-4:
Dynamic focus control: classification of the reading range in distance configurations
1
2
3
5
8
4
6
7
Reading
field height
Focus
position
Reading distance
Focus position
Reading distance
DC
= D
istance
C
onfiguration
DC 1
DC 3
DC 4
DC 6
DC 7
DC 8
DC 2
DC 5
