Aaeon AEC-6850 - COM2 RS-232;422;485 Setting; COM2 RS-232;422;485 Serial Port Connector; COM1 RS-232 Serial Port Connector

Embedded Controller AEC-6850
Chapter 2 Hardware Installation 2 - 6
2.4 COM2 RS-232/422/485 Setting
Note: RS-232/422/485 Selection by BIOS
2.5 COM2 RS-232/422/485 Serial Port Connector
Different devices implement the RS-232/422/485 standard in
different ways. If you are having problems with a serial device, be
sure to check the pin assignments below for the connector.
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 10 N.C.
2.6 COM1 RS-232 Serial Port Connector
Pin Signal Pin Signal
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N.C.