Com Port Wafer Connector (Cn1, Cn3) - AXIOMTEK IPC920 Series User Manual

IPC920 Series User's Manual
1.8.2

COM port wafer connector (CN1, CN3)

The pin assignments of RS-232/422/485 are listed in the below table.
Set COM signals to operate in RS-232/422/485 by BIOS.
Supports High-Speed Mode 115.2 Kbps, up to 1.5 Kbps
Pin RS-232 RS-422
1 RTS RX-
3 TXD RX+
5 CTS TX-
7 RXD TX+
9 GND GND
2 RTS RX-
4 TXD RX+
6 CTS TX-
8 RXD TX+
10 GND GND
Pins RS-232
1 No use
2 RXD, Receive Data
3 TXD, Transmit Data
4 No use
5 GND, Ground
16
RS-485
N.C.
N.C.
D-
D+
GND
N.C.
N.C.
D-
D+
GND
RS-422 RS-485
No use No use
TX+ Data+
RX+ No use
No use No use
No use No use
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