AAEON AEC-6511 - Manual (Page 19)

E m b e d d e d C o n t r o l l e r A E C - 6 5 1 1
Chapter 2 Quick Installation Guide 2 - 3
2.3 COM2 Connector for RS-232/422/485
RS-232
Pin Signal Pin Signal
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
RS-422
Pin Signal Pin Signal
1 TXD- 2 RXD+
3 TXD+ 4 RXD-
RS-485
Pin Signal Pin Signal
1 TXD- 2 NC
3 TXD+ 4 NC