Functions
Leuze electronic
DCR 202i
16
4
Functions
This chapter describes the functions of the code reader:
• Camera operating modes; see chapter 4.1
• Reference code comparison; see chapter 4.2
• webConfig tool; see chapter 4.3
4.1
Camera operating modes
The camera operating mode defines how the code reader starts a read process and decodes the codes if
a code is located in the read field.
4.1.1 Single trigger mode
In the Single trigger mode camera operating mode, the code reader captures
one
image and attempts to
decode it. Under uniform conditions, this camera operating mode makes fast decoding possible.
4.1.2 Reading gate control
The Reading gate control camera operating mode is activated upon shipment from the factory. The
reading gate control opens a time window for the read process in the code reader – the reading gate. In
this time window, the code reader can capture and decode one or more codes.
4.1.3 Burst mode
In the Burst mode camera operating mode, the code reader captures
multiple
images in quick succession
after activation by a trigger signal. Decoding occurs following image capture, thereby allowing the codes
to be detected more quickly. As soon as the decoding result corresponds to the settings, the decoding
stops the capture of the remaining images.
1
Continuous image capture
2
Decoding
3
Output of the read data
Figure 4.1:
Burst mode
4.1.4 Presentation mode
In the Presentation mode camera operating mode, the code reader is in the idle state in a kind of wait
mode.
In the event of a change in the image area, e.g., by holding up a code, the code reader captures images
with illumination (as previously configured) until a code is read successfully. The code reader then
switches back to the wait mode and the illumination switches off after a few seconds.
A
A
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C
D
B
C
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F
G
H
A
B
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