Vecow IVH-9204MX ICY User Manual page 30

2.3.3 COM Ports
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; but if you want to change to RS-422 or RS-485, you can find
the setting in BIOS.
BIOS Setting
The pin assignments are listed in the following table :
Serial Port
1, 2
3, 4
COM 3 & COM 4 MB connector table :
COM Port
COM 3
©Vecow IVH-9204MX ICY User Manual
COM 1
On | Off
IGN
COM 2
COM 4 COM 3
RS-232
COM 1 RS-422 (5-wire)
COM 2
RS-422 (9-wire)
COM 3
RS-485
COM 4
RS-485 w/z auto-flow control
Pin No. RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
MB Connector
CN9
PoE PoE PoE PoE
Isolated
LAN6 LAN5 LAN4 LAN3
20
10
PIN 1 ~ 8 D I
Function
RS-422
(5-wire)
TXD-
TXD+
RXD+
RXD-
GND
-----------
-----------
-----------
-----------
COM Port
COM 4
GETTING TO KNOW YOUR IVH-9204MX ICY
DIO 2 DIO 1
Isolated
11 20 11
1 10 1
PIN 11 ~ 18 DO PIN 1 ~ 8 D I PIN 11 ~ 18 DO
DC-IN 16~160V
V+ V -
RS-422 RS-485
(9-wire) (3-wire)
TXD- DATA-
TXD+ DATA+
RXD+ -----------
RXD- -----------
GND GND
RTS- -----------
RTS+ -----------
CTS+ -----------
CTS- -----------
MB Connector
CN10
23