Cartft FLEETPC-ARM-300 Reference Manual page 24

2x CAN2.0B bus interfaces, 2x COM port (RS232/ RS485), I
available on the IO1 connector. On the standard FLEETPC-ARM-300 hardware, COM2 is
configured as RS232 and COM3 is configured as RS485 port. Both COM2 and COM3 can
be configured as either RS232 or RS485 port (on ordering FLEETPC-ARM-300 products).
Functions Pin
CAN1
CAN2
COM2
(RS232)
COM3
(RS485)
2
I C Bus
PWR
Signals
1 CAN1H
2 CAN1L
3 CAN2H
4 CAN2L
6 TXD
7 RXD
8 485-
9 485+
11 SCL
12 SDA
13
3.3V/5V
14
FLEETPC-ARM-300 Series
Linux
Device
can0 CAN 2.0B protocol
can1 CAN 2.0B protocol
COM2_TXD = 485-
/dev/ttymxc1
COM2_RXD = 485+
COM3_RXD = 485-
/dev/ttymxc2
COM3_TXD = 485+
--
3.3V/5V configured
--
24
Page
JP4 pin1
JP5 pin1
2
C bus and power pins are
Notes
--
by JP4 and JP5
(default +5V)
Isolation
Y
Y
Y
Y
(option)
Y