Vecow ECX-2600 PEG User Manual page 40

2.3.4 Serial Port
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
COM 1
COM 2
COM 3
COM 4
The pin assignments are listed in the following table :
Serial
Port
1 to 4
©Vecow ECX-2600/2400/2300 PEG User Manual
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
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
Function
RS-422
(5-wire)
TXD-
TXD+
RXD+
RXD-
GND
-----------
-----------
-----------
-----------
GETTING TO KNOW YOUR ECX-2600/2400/2300 PEG
RS-422 RS-485
(9-wire) (3-wire)
TXD- DATA-
TXD+ DATA+
RXD+ -----------
RXD- -----------
GND GND
RTS- -----------
RTS+ -----------
CTS+ -----------
CTS- -----------
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