FingerVein Online
Installation and Programming Manual
Page
23 of 69
The following section explains the meaning of each of these configuration bytes.
Byte
$01
:
ECHO
. This generates an OpCode for each status change (digital inputs,
time-locking relays and optical barrier, among others). We can configure from which
type of signal we want to obtain the Echo.
Permitted values:
- Bit 3: ECHO ON – Reset Output.
- Bit 4: ECHO ON – Status change in digital inputs.
- Bit 5: ECHO ON – Ends digital output timing (Relay, LED, buzzer).
- Bit 6: ECHO ON – Optical barrier (notifies erroneous status)
- Bit 7 (MSB): ECHO ON – Reserved (keep at 0)
- 0x00: ECHO OFF: - silent (only responds if it is asked for the digital inputs).
Default value:
- 0x50: ECHO ON, for digital inputs and optical barrier
Byte
$04
:
SCI
Time-out. This configures the maximum time-out between
consecutive characters received by the terminal from the RS232 reader to be
interpreted as part of the same command frame.
Permitted values:
- 0x01 .. 0xFE: Time-out value in tenths of a second.
- 0x00, 0xFF: Automatic time-out value (from 150 ms for 9600 baud and 20 ms for
115200 baud)
Default value:
- 0xFF: Automatic time-out.
Byte
$0D
:
Event Channel
. Normally, the FingerVein Online electronics always
responds through the same channel from which the instruction is received. However,
there are situations (typically after Reset) where there is no prior instruction and
therefore we have to refer to
CFG-DB_EventCH
to determine this output channel.
Table 5: Event Channel identifier
CFG-DB_EventCH
Communications channel
$00
UART1-DB
$07
UDP - Bio-OCX (port 5500)
a
a. This requires specifying a remote port other than 0
$08
UDP - KSP (port 6000)
$FF
None
