ONLINE HELP SOPAS Chapter 5
LECTOR®620
Parameters
8013778/Y269/2013-11-27 © SICK AG · Germany · All rights reserved · Subject to change without notice 27
If the menu function is activated, the following functions can be accessed using the buttons
on the LECTOR
®
620:
• R
EAD DIAGN: A suitable code in the reading area is read with the current configuration. The
reading rate of the last 10 readings is displayed in % via the bar chart on the housing of the
LECTOR
®
620.
• T
EACHIN MATCHCODE: A suitable code in the reading area is read and stored as a match-
code.
• A
UTO-SETUP (initially only available for DATA MATRIX): Depending on the configuration of the
parameters in the Auto setup via function button menu group, the reading distance, image
settings (brightness and contrast), and code settings are modified automatically. For this, a
suitable object with contrast changes or edges (e.g. code, text, or other structures) must be
placed in the reading area.
• A
UTOFOCUS: The focus position (reading distance) is modified automatically. For this, a sui-
table object with contrast changes or edges (e.g. code, text, or other structures) must be
placed in the reading area.
• U
SERDEFINED: (currently not implemented)
5.4 Reading configuration
5.4.1 Camera and lighting
All parameters that affect the quality of the images taken are combined on the Camera and
lighting tab.
Optimizing the camera and lighting settings improves the contrast, sharpness and illumina-
tion. This results in better code identification and therefore increases the reliability of the
reading.
A high image quality increases the time required to save the images taken. The save
times can be lowered by reducing the image quality.
5.4.1.1 Reading distance
The distance between the LECTOR
®
620 and the object is set via the parameters for the
Reading distance group. The reading distance is used to adapt the focal range of the LEC-
TOR
®
620 to the mounting site.
The value can be entered manually in mm or set automatically via the Auto button.
To avoid disruptive reflections on the object surface, the LECTOR
®
620 should be moun-
ted on a suitable mounting bracket (see installation information).
The reading distance affects the minimum code resolution and the size of the reading
area:
• If the reading distance is small, smaller codes can be read.
• A larger reading distance increases the reading area. The reduction in image brightness
caused by this is compensated for by the brightness control and, if necessary, by increasing
the shutter time.
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