Vecow MTC-7000 Series User Manual page 30

2.3.5 JCOM1, JCOM2, JCOM3, JCOM4 : Serial Port
Serial port 1 to 4 (JCOM 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 to 4 is
RS-232, if you want to change to RS-422 or RS-485, you can find the setting in
BIOS.
10
The pin assignments are listed in the following table :
Serial
Port
1, 2
3, 4
©Vecow MTC-7000 User Manual
COM 1 (JCOM1)
1
COM 2 (JCOM2)
COM 3 (JCOM3)
COM 4 (JCOM4)
Pin No. RS-232
1 GND_EARTH
2 GND
3 RI
4 DTR
5 CTS
6 TXD
7 RTS
8 RXD
9 DSR
10 DCD
BIOS Setting
RS-422
(5-wire)
GND_EARTH GND_EARTH
GND
-----------
RXD-
-----------
RXD+
-----------
TXD+
-----------
TXD-
GETTING TO KNOW YOUR MTC-7000
JCOM1
JCOM2
JCOM3
JCOM4
Function
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
RS-485 w/z auto-flow control
RS-422 RS-485
(9-wire) (3-wire)
GND_EARTH
GND GND
CTS-
RXD- -----------
CTS+ -----------
RXD+ -----------
RTS+ -----------
TXD+ DATA+
RTS- -----------
TXD- DATA-
RI
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