Unicorn Computer ENDAT-3857 - Page 14

ENDAT-3857 USERS MANUAL
UNICORN COMPUTER CORP.
14
CN1(COM2),CN2(COM1): Serial port Box Headers (2x5 with 2.0mm)
Pin No. Function Pin No. Function
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 GND 10 N.C.
Serial Cable D-SUB Type Connector Pin Mapping
Pin No. Function Pin No. Function
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 GND
COM2 port (RS-485 2 Wire)
Pin No. Function Pin No. Function
1 Data – 6 NA
2 Data + 7 NA
3 NA 8 NA
4 NA 9 NA
5 NA
COM2 port (RS-422 4 Wire)
Pin No. Function Pin No. Function
1 –TXD 6 NA
2 +RXD 7 NA
3 +TXD 8 NA
4 –RXD 9 NA
5 NA