Hardware Interfaces
BOLERO40 Series Hardware Manual
23
6
Hardware Interfaces
6.1
8-Wire harness
The table below shows the description of the 8-wire harness on the BOLERO40.
PIN-COLOR
NAME
DIRECTION DESCRIPTION
LEVEL
1-RED
DC IN
IN
Power supply input. The power supply
must be able to meet the requirements of
current consumption. Care must be taken
so that the applied voltage stays within the
specified range. Applying a voltage outside
the range can damage the device. For more
-
V
DC IN
=+10.8...+ 48.0 VDC
permanent power
-
Imax ≤
2 A
2-BROWN
GND
-
Ground.
0 V
3-BLUE
IGN
IN
General purpose input. It can be connected
to the vehicle ignition to wake up the
BOLERO40 from “Sleep” mode and use
journey START/STOP reports.
HIGH = 10.8...V
DC IN
; LOW = 0V
4-PINK
1-wire
IN/OUT
1-Wire master interface for iButton and
1Wire-temp. sensors.
V
OUT
= + 3.3 VDC
5-YELLOW
IO2
IN/OUT
Software controlled pins. Each pin has dual
functions as analogue or digital. As digital
they can be used either as input or output.
Outputs (open collector) do not include
internally any fly-back diodes for
protection when interfacing inductive
loads (e.g. relays). Thus, when controlling a
relay, it is strongly recommended to use a
fly-back diode.
OUT: 100 mA max.
@ +0 .. +32.0V DC
6-GREEN
IO3
IN: 0V..+32.0V DC
(High & Low levels are user-
programmable)
7-VIOLET
RXD
IN
(Serial 0) The serial port (receive data) for
direct connection to the host PC.
V24, ±12 VDC
8-BLACK
TXD
OUT
(Serial 0) Serial port (transmit data) for
direct connection to the host PC.
Table 8:
Description of the 8-wire harness/connector
6.1.1
Special IO description
The IO2 and IO3 have dual functions. Both are controlled by the internal firmware of
BOLERO40. Therefore, the user must define whether to use them as analogue or digital. IOs
as digital can be used as inputs or outputs while as analogue can only be used as inputs.