Echo Echo246F, Руководство пользователя

Страница: 59 / 157

51 © Echo 246F User Manual GETTING TO KNOW YOUR Echo 246F
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-422 (9-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-422
(9-wire)
RS-485
(3-wire)
1 to 4
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- -----------
2.3.5 Serial Port
COM 1
COM 2
COM 3
COM 4
DC-IN
Isolated
DIO
20 11
10 1
D I PIN 1 ~ 8 DO PIN 11 ~ 18
Power Switch
On / Off IGN
LAN 4
LAN 3
LAN 6
LAN 5
3 4
PoE+
5 6
PoE+