46
©Vecow ECX-2200A/2100A User Manual
GETTING TO KNOW YOUR ECX-2200A/2100A
Serial port 1 to 4 (COM 1 to 4) can be configured for RS-232, RS-422, or RS-
485 with auto flow control communication. The default definition of COM 1 and
COM 2 is RS-232, if you want to change to RS-422 or RS-485, you can find the
setting in BIOS.
BIOS Setting
Function
COM 1
COM 2
COM 3
COM 4
RS-232
RS-422(5-wire)
RS-485
RS-485 w/z auto-flow control
The pin assignments are listed in the following table :
Serial
Port
Pin No.
RS-232
RS-422
(5-wire)
RS-485
(3-wire)
1 to 4
1
DCD
TXD-
DATA-
2
RXD
TXD+
DATA+
3
TXD
RXD+
----------
4
DTR
RXD-
----------
5
GND
GND
GND
6
DSR
----------
----------
7
RTS
----------
----------
8
CTS
----------
----------
9
RI
----------
----------
2.3.4 Serial Port
V+ V
DC-IN
IGN
On / Off
COM 1
COM 3
COM 2
COM 4
LAN 3
PoE+
LAN 4
PoE+
LAN 5
PoE+
LAN 6
PoE+
Isolated
DIO2
D I
PIN 1 ~ 8
DO
PIN 11 ~ 18
20
11
10
1
Isolated
DIO1
D I
PIN 1 ~ 8
DO
PIN 11 ~ 18
20
11
10
1