Avalue ECM-LX800D - Manual (Page 23)

User ’s Manual
ECM-LX800D User ’s Manual 23
2.4.8 Serial port 2 COM2 in RS-232 Mode (JCOM2)
Signal PIN PIN Signal
NC 10 9 RI
CTS 8 7 RTS
DSR 6 5 GND
DTR 4 3 TxD
RxD 2 1 DCD
2.4.9 Serial port 2 in RS-422/485 Mode (JRS422/485)
Signal PIN PIN Signal
+5V 5 6 GND
TxD+ 3 4 RxD+
TxD- 1 2 RxD-
Note:
JRS422/485 is available after
modifying the mode of COM2 in
BIOS setting.