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Chapter
6
Operating Instructions
CLV 490 Bar Code Scanner
6-22
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8 009 993/O824/20-12-2004
Operation
The selected reading mode depends on the number of objects that are simultanously in the
reading field of the CLV during each reading interval. This is independent of the number of
bar codes on the actual object.
shows an overview of the configurations and
applications.
A. CLV in stand-alone configuration
A1. Start/stopp mode
•
One object
in the reading field per reading interval, reading one side
Possible reading triggers:
•
One external sensor (e. g. photoelectric reflex switch)
•
Two external sensors
•
Command strings
•
Free-running mode
•
Object polling (Autofocus mode "Minimum distance“ or "Differential background")
Further preparations:
¾
Configuring reading area: see
Chapter a)Parameterizing reading area, Page 6-10
.
¾
Selecting focus control mode: see
Chapter b) Selecting focus control mode,
.
¾
Configuring focus control: see
Chapter c) Parameterizing focus control, Page 6-12
.
¾
Configuring oscillating mirror (optional): see
Chapter e) Parameterizing oscillation mirror
functions (optional), Page 6-18
.
¾
Configuring no. of bar codes to be read: see
Chapter h) Parameterizing the evaluation
.
Note
The size of the reading field is determined by the distance between the start and stop
sensors in conveying direction (see
). In object polling mode, the CLV
detects automatically an object entering or leaving the reading field.
To separate bar codes of the same type with identical contents, connect an incremental
encoder and activate the "Compare Code Position" function. See also
of identical bar codes (same code type/identical contents), Page 6-37
f) Parameterizing reading mode
Configuration
Application
See Page
A. Stand-alone
Start/stop mode
•
One object
in reading field per reading interval, reading one side
Tracking mode (controlled by increment)
•
Max. 10 objects
in reading field per reading interval, reading one side, with
internal object tracking
B. Used in Omni Portal System
(arrangement with OTS 400
and other CLVs)
Start/stop modes
•
One object
in reading field per reading interval, CLV involved in reading one side
or more sides, master/slave arrangement with OTC 400 controller
Tracking mode (controlled by increment)
•
Max. 20 objects
in reading field per reading interval, CLV involved in reading one
side or more sides, with object tracking by the OTC 400 controller
Table 6-10: Overview: CLV applications in stand-alone configuration or in arrangement with OTS 400