Neousys Nuvo-6108GC Series User Manual page 30

Nuvo-6108GC/ Nuvo-6108GC-IGN
COM Port Pin Definition
Pin# RS-232 Mode
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
COM1 & COM2
RS-485 Mode
RS-422 Mode
(Two-wire 485)
422 TXD+ 485 TXD+/RXD+
422 RXD+
422 RXD-
GND
422 TXD- 485 TXD-/RXD-
30
GND