Vecow EVS-1000 User Manual page 26

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
COM 1
COM 2
COM 3
COM 4
The pin assignments are listed in the following table :
Serial Port Pin No.
1
2
3
4
1 to 4 5
6
7
8
9
COM 3 & COM 4 MB connector table :
COM Port
COM 3
COM 3 & COM 4 MB connector pin out :
CN Pin No.
CN12 (COM3)
CN13 (COM4)
RS-232
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
MB Connector
CN12
Signal Name
1 Chassis GND
2 GND
3 RI
4 DTR
5 CTS
Function
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
RS-485 w/z auto-flow control
RS-422 RS-422
(5-wire) (9-wire)
TXD- TXD-
TXD+ TXD+
RXD+ RXD+
RXD- RXD-
GND GND
RTS-
-
RTS+
-
CTS+
-
CTS-
-
COM Port
COM 4
Pin No.
6
7
8
9
10
GETTING TO KNOW YOUR EVS-1000/1100
RS-485
(3-wire)
DATA-
DATA+
-
-
GND
-
-
-
-
MB Connector
CN13
Signal Name
TXD
RTS
RXD
DSR
DCD
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