User`s manual

ENDAT-2794A USERS MANUAL
UNICORN COMPUTER CORP.
13
D-SUB Type Connector for COM1 ~ COM3 port (RS-232)
Pin No. Description Pin No. Description
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 GND
D-SUB Type Connector for 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 NA 9 –RXD
5 NA
D-SUB Type Connector for COM2 port (RS-485 2 Wire)
Pin No. Function Pin No. Function
1 Data – 6 NA
2 NA 7 NA
3 Data + 8 NA
4 NA 9 NA
5 NA
CN3: COM4 port Box Headers (2x5 with 2.54mm)
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.
SMB1: SM Bus (1x4 with 2.54mm)
Pin No. Function Pin No. Function
1 SMBCLK 3 +3.3V
2 SMBDATA 4 GND