Vecow EMBC-1000, User Manual

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23 GETTING TO KNOW YOUR EMBC-1000
Serial
Port
Pin No. RS-232
RS-422
(5-wire)
RS-422
(9-wire)
RS-485
(3-wire)
1
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- -----------
COM1 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)
2, 3
4, 5
1
GND_
EARTH
GND_
EARTH
GND_
EARTH
GND_
EARTH
2 GND GND GND GND
3 RI ----------- CTS- RI
4 DTR RXD- RXD- -----------
5 CTS ----------- CTS+ -----------
6 TXD RXD+ RXD+ -----------
7 RTS ----------- RTS+ -----------
8 RXD TXD+ TXD+ DATA+
9 DSR ----------- RTS- -----------
10 DCD TXD- TXD- DATA-
COM2~COM5 pin assignments are listed in the following table: