Lenovo EAM-400H, User Manual

Page: 32 / 51

20 Hardware Information
Serial Port Connectors - RS-232 (COM2~6)
Pin # Signal Function
1 DCD Data Carrier Detect
2 DSR Data Set Ready
3 RXD Receive Data
4 RTS Request to Send
5 TXD Transmit Data
6 CTS Clear to Send
7 DTR Data Terminal Ready
8 RI Ring Indicate
9 GND Ground
10 NC Key
Serial Port Connector - RS-422/485 (COM6)
1 2
9 10
1 2
9 10
See "COM6 Mode Jumper Settings (JSETCOM6)" on page 24.
Pin # RS-422 RS-485
1 TX- DATA-
2 N/A N/A
3 TX+ DATA+
4 N/A N/A
5 RX+ N/A
6 N/A N/A
7 RX- N/A
8 N/A N/A
9 GND GND
10 Key Key