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GETTING TO KNOW YOUR RCS-7000
2.2.7 Serial Port, COM 2
Serial port 2 can be configured for RS-232, RS-422, or RS-485 with auto flow
control communication. Serial Port 2 default setting is RS-232, if you want to
use RS-422 or RS-485, you can find the setting in BIOS.
BIOS Setting
Function
COM2
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
RS-485 w/z auto-flow control
Serial
Port
Pin No.
RS-232
RS-422
(5-Wire)
RS-422
(9-Wire)
RS-485
(3-Wire)
2
1
DCD
TXD-
TXD-
DATA-
2
RXD
TXD+
TXD+
DATA+
3
TXD
RXD+
RXD+
-----------
4
DTR
RXD-
RXD-
-----------
5
GND
GND
GND
GND
6
DSR
-----------
RTS-
-----------
7
RTS
-----------
RTS+
-----------
8
CTS
-----------
CTS+
-----------
9
RI
-----------
CTS-
-----------
The pin assignments are shown in the following table:
Isolated
DIO 2
Reset
COM 1
COM 2
| LAN 2
VGA
DVI-D
V+
1
2
| LAN 1
V-
COM 4
COM 3
Isolated
DIO 1
On | Off