AXIOMTEK IPC972, User Manual

Page: 39 / 94

IPC972 Series U
ser’s Manual
Introduction 31
The system has two serial ports. COM1~COM2 are RS-232/422/485 ports.
*RS-232/422/485 can be configured via BIOS settings.
※
COM1,COM2
Pins RS-232 RS-422 RS-485
1 DCD, Data Carrier Detect TX- Data-
2 RXD, Receive Data TX+ Data+
3 TXD, Transmit Data RX+ No use
4 DTR, Data Terminal Ready RX- No use
5 GND, Ground No use No use
6 DSR, Data Set Ready No use No use
7 RTS, Request To Send No use No use
8 CTS, Clear To Send No use No use
9 RI, Ring Indicator No use No use