BioMax2 / KBio2-Online
Installation and Programming Manual
Page
19 of 91
5.3.3. Setup and operation
Once configured, the
BioMax2
or
KBio2-Online
electronics must be reset (use command
), in order to start operation
.
Optical barrier
The LED optical barrier will operate immediately, and it will be promptly generate a
event as soon as the infra-red beam is blocked. Any key value may be
announced, as configured through
(
CFG_OPT_KeyCode
). Its default
value is
$41
(‘A’ : green key).
Upon finger detection, operation is suspended during a guard time period, which is
configured through
(
CFG_OPT_T_GUARD
). Such guard time may be
overridden from the application by disabling the optical barrier prior to communication
with the FIM module (
). When done, re-enable operation (
) to resume detection.
FIM Auto-On
Automatic finger detection by the biometric sensor is a more complex process:
- Upon startup, a boot-up time is required for the FIM module. We may configure
such value through
(
CFG_IDNT_-BOOTUP_TIME
). The
recommended value depends on the FIM model and the database capacity.
- If a finger is presented during the boot-up period, an
showing status
$FC
, will appear.
- After boot-up, Auto-On starts automatically. If we force
, we
get its current status in response. Value
$00
is the correct operation status,
while
$FD
means that boot-up operation did not end correctly, so Auto-On is
not available. That can be due to a communication error (baudrate mismatch,
broken cable...) or to an old version of FIM that does not support this feature.
- Finger detection occurs when the finger is placed on the surface of the sensor. If
there is no clear perception of change (for instance, if the finger does is not
removed between one failed identification and the next retry), the finger is not
detected. Therefore, it is necessary to remove and re-place the finger for each
identification that we try. Upon detection, a
value of the pressed key is configurable through
(
CFG_
OPT_KeyCode
), and its default value is
$41
(‘A’ : green key).
- Upon finger detection, operation is suspended during a guard time period, which
(
CFG_OPT_T_GUARD
). Such guard time
may be overridden from the application by disabling the optical barrier prior to
communication with the FIM module (
). When done, re-
enable operation (
