Avalue EMX-CDV - Manual (Page 23)

User ’s Manual
EMX-CDV User ’s Manual 23
2.4 Setting Jumpers & Connectors
2.4.1 Serial Port 1 Setting - RS232/422/485 (JRS1, JRS2, JRS3, JRS4)
* Default
RS232 *
RS422/RS485
RS422/485 Pin Mapping
Pin RS-232 RS-485 RS-422
1 DCD TXD- TXD-
2 RXD TXD+ TXD+
3 TXD RXD+
4 DTR RXD-
5 GND GND GND
6 DSR
7 RTS
8 CTS
9 RI
JRS4
JRS3
JRS2
JRS1