Avalue ECM-PNV - Manual (Page 27)

User ’s Manual
ECM-PNV User ’s Manual 27
2.4.9 Serial port 2 in RS-422/485 mode (J422/485_1)
J422/485_1
Signal PIN PIN Signal
TX- 1 2 RX-
TX+ 3 4 RX+
+5V 5 6 GND
Note:
J422/485 is available after modifying the mode
of COM2 in BIOS setting. And the wiring must changed
to E1701150300R and Connecting it to this
J422/485_1 connector.
J422
/48
5_
1