6
For 2.5Gbps RJ-45 LAN port:
COM Port & GPIO Connector
COM1/COM2:
RS232/422/485 Serial Port;
COM3/COM4: RS232 Serial Port.
The pin assignment for RS-232/ 422/ 485 is listed as follows:
1 2 3 4 5
6 7 8 9
Pin NO. RS232
*RS422
(optional)
*RS485
(optional)
1
DCD
TX-
DATA-
2
RXD
TX+
DATA+
3
TXD
RX+
NC
4
DTR
RX-
NC
5
GND
GND
GND
6
DSR
NC
NC
7
RTS
NC
NC
8
CTS
NC
NC
9
RI
NC
NC
COM1 & COM2 ports can function as RS232/422/485 port. In normal settings
COM1/COM2 functions as RS232 port. With compatible COM cable they can function
as RS422 or RS 485 port. User also needs to go to BIOS to set
‘
Transmission Mode
Select
’
for
‘Serial Port 1 Configuration’ or ‘Serial Port 2 Configuration’
(refer to
Page 28) at first, before using specialized cable to connect different pins of this port.
COM3:
RS232
or GPIO
COM4:
RS232
or GPIO
COM2
:
RS232/422/485
COM1:
RS232/422/485