23
(6) GPIO1(10-pin): GPIO Header
(2.0 pitch)
9
G
PIO81
G
ND
G
PIO83
G
PIO85
G
PIO87
G
PIO80
G
PIO82
2
Pin 1
10
VCC
G
PIO84
G
PIO86
(7) COM1/COM2 (9-pin): RS232/422/485 Serial Port Header
(2.0 pitch)
Pin 1
2 3 4 5
6 7 8 9
COM2
COM1
Pin NO. RS232
*RS422
(optional)
*RS485
(optional)
Pin 1
DCD
TX-
DATA-
Pin 2
RXD
TX+
DATA+
Pin 3
TXD
RX+
NC
Pin 4
DTR
RX-
NC
Pin 5
GND
GND
GND
Pin 6
DSR
NC
NC
Pin 7
RTS
NC
NC
Pin 8
CTS
NC
NC
Pin 9
RI
NC
NC