SICK ICR 84x, Руководство по эксплуатации

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Chapter 10 Operating instructions
ICR 84x Image Code Reader
10-18
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SICK AG · Division Auto Ident · Germany · All rights reserved 8 010 961/0000/10-05-2005
Appendix
Optimize only even patterns:
¾
Click this checkbox if curved structures in the same size as the symbol appear in the
image.
Decoder retry on ...
The parameters listed here are used to increase the reading rate for difficult reading
conditions (poor code quality).
... corrupted L-pattern:
When evaluating the image memory, the ICR uses a more complex search algorithm.
... corrupted alternating pattern:
When evaluating the image memory, the ICR retries to determine the limit of the code
data field.
... alternating pattern mismatch :
When evaluating the image memory, the ICR retries to determine the limit of the code
data field with only one fixed symbol size.
¾
Activate the three checkboxes.
... weak contrast for:
For codes with weak contrast, the ICR can improve its reading performance by also
using the “weak“ cells for decoding. Weak cells are those which were deemed not
clearly identifiable due to their grayscale value in the image memory, with the default
settings of the decoder in effect. The number of weak cells showing up in the image
memory and the additional weak cells with the greatest contrast difference are output
by the ICR as part of the reading diagnosis data EC in the reading result of the auxiliary
interface (see Fig. 6-23, Page 6-30 ). The maximum number of cells which can be set
is 10 (default setting: 0).
¾
Define the desired number of weak cells in the input field.
e) Minimum symbol contrast
13. Define the minimum symbol contrast according to Fig. 10-8, Page 10-17.
Symbol contrast:
The ICR only starts the evaluation of 2-D symbologies if the symbology contrast in the
image buffer memory has reached a defined level. This level can be set.
The function helps to improve the decoder performance if there is a disturbing
background around the 2-D label. The 2-D label must have a higher contrast regarding
the contrast around the label, however.
¾
Increase the symbology contrast corresponding to the printed 2-D code label and
check reading performance again.
f) Illumination mode
14. Select the R
EADING
C
ONFIGURATION
tab ( Fig. 10-3, Page 10-14 ).
15. Click the C
ODE
P
ROPERTIES
P
ARAMETERS
button.
The C
ODE
P
ROPERTIES
P
ARAMETERS
dialog box is then displayed.
16. In the I
NTERNAL
I
LLUMINATION
M
ODE
group, define the number of LED segments for the ICR
which are to be used for illuminating the reading area.
The LEDs are grouped in 4 segments, which can be switched on by the ICR independent
of each over. In this way, the illumination can be specially adjusted to different
applications. In CLV Setup, you can select the various LEDs accordingly.