AAEON AEC-6625 - Manual (Page 27)

E m b e d d e d C o n t r o l l e r A E C - 6 6 2 5
Chapter 2 Hardware Installation 2 - 10
2.5 RS-232/422/485 Serial Port Connector (COM 2)
4
5
2
3
1
6
7
8
9
Pin Signal Pin Signal
1 DCD (422TXD-/485DATA-) 2 RXD (422RXD+)
3 TXD (422TXD+/485DATA+) 4 DTR (422RXD-)
5 GND 6 DSR
7 RTS 8 CTS
9 RI/+5V/+12V Selection
COM2 RI/+5V/+12V Selection (JP6)
Pin Signal
1-2 +12V
3-4 RI (Default)
5-6 +5V