Operating Instructions
Chapter
6
CLX 490
8 009 237/0000/07-05-2002
©
SICK AG · Division Auto Ident · Germany · All rights reserved
6-17
Operation
The output format of the reading result is the same as that of the Reading mode.
explains the structure and function of the reading diagnosis data.
6.5.3
Background teach-in
If the Autofocus function is used in the D
IFFERENTIAL
BACKGROUND
or D
IFFERENTIAL
BACKGROUND
AND
T
RACKING
mode, the CLX must first learn the
ambient background
in its reading field to
narrow the reading field even further. When the internal distance profile is set, the reading
field of the CLX must
not contain any objects
. In this mode, the CLX does not output any
reading results.
The background teach-in function can be started as a device function in the submenus
under CLX 490, D
EVICE
F
UNCTIONS
, B
ACKGROUND
, T
EACH
-
IN
or press the [F2] key.
1.
Mount the CLX at the reading station and align it with an object containing a bar code.
2.
Remove the object so that the CLX has an unobstructed view of the background.
3.
Choose T
OOLS
, D
EVICE
F
UNCTIONS
, B
ACKGROUND
, T
EACH
-
IN
– or –
press the [F2] key.
The E
XECUTE
D
EVICE
F
UNCTIONS
window opens.
Choose B
ACKGROUND
, T
EACH
-
IN
in the
EXECUTE
menue.
The Device Ready LED extinguishes. The CLX then scans its background and learns the
ambient background so that it can create a suitable distance profile.
The CLX outputs a message once the teach-in procedure has been successfully com-
pleted (see
The CLX has then learned the ambient background.
Fig. 6-5:
CLV-Setup: Displaying the percentage evaluation in the Terminal Emulator