
Configuration using configuration codes
34
Technical description LSIS 22x
Leuze electronic
7.2
Configuration of the reading gate control (trigger)
Multiple trigger modes are available for controlling the reading gate (start/stop reading):
•
Manual/serial trigger mode
(factory setting for RS 232 and USB COM port)
With manual/serial trigger mode, the reading gate opens if the trigger button is
pressed, the trigger input is activated by applying a high signal, or if the
<SYN>T<CR> read start command
is sent to the LSIS 22x via the serial interface.
The reading gate closes if a code is read successfully, the trigger button released,
the trigger input deactivated by removing the high signal, or if the
<SYN>U<CR>
read stop command
is sent to the LSIS 22x via the serial interface.
With serial trigger (trigger commands via the serial interface), a
read time-out
time
can
optionally
be set, after which the reading gate is closed if no code was read.
•
Presentation mode
In presentation mode, the LSIS 22x is set to
permanent reading
for ambient light.
The reading gate is continuously open. If a change in the image area is detected, the
LSIS 22x first tries to read a code. If this is not successful, the intensity of the LED
illumination is continuously increased until a code is read. Following the successful
reading of a code, the LED illumination is switched off again after a few seconds.
•
Streaming presentation mode
(factory setting for USB keyboard emulation)
In streaming presentation mode, the LSIS 22x is set to
permanent reading
with per-
manently switched-on LED illumination. The reading gate is continuously open.
Normal / enhanced mode
With
manual/serial trigger mode
and with
streaming presentation mode
, a distinction
is also made between the
normal
and
enhanced
settings:
• The
normal
setting (factory setting) offers good reading speed at maximum operat-
ing range.
• The
enhanced
setting, on the other hand, offers maximum reading speed at a
slightly reduced operating range.
Notice!
If in doubt, test which setting,
normal
or
enhanced
, delivers the best results in your appli-
cation.