DFI EC300 Series, User Manual

Page: 95 / 208

95
5
Ports and Connectors
COM Ports
COM 1 / COM 2
DCD TXD RXD DT
R
GND
1 2 3 4 5
6 8 9
7
DSR
CT
S
RT
S
RI
RX+ TX+ RX
-
TX
-
GND
1 2 3 4 5
6 8 9
7
N.C. N.C. N.C. N.C.
D
ATA
+
N.C. D
ATA
-
N.C. GND
1 2 3 4 5
6 8 9
7
N.C. N.C. N.C. N.C.
RS232 RS422
Full Duplex
RS485
VGA
COM 2
COM 1
COM 1/COM 2:
RS232/422/485
The pin functions of COM port 1 and COM port 2 will vary according to JP11’s
and JP13’s setting. The jumpers allow you to con
fi gure the Serial COM ports to
RS232, RS422 (Full Duplex) or RS485. Refer to “COM 1/COM 2 RS232/422/485
Select” and “COM 1/COM 2 RS232/Power Select“ in chapter 4 for more informa-
tion.
The serial ports are asynchronous communication ports with 16C550A-compatible
UARTs that can be used with modems, serial printers, remote display terminals,
and other serial devices.