Serial Port Connectors - BOSER Technology HS-4650 Manual

3.10 Serial Port Connectors

The HS-4650 offers two NS16C550 compatible UARTs with
Read/Receive 16-byte FIFO serial ports and three internal 10-pin
headers, one DB9 connector, and one RS-422/485 connector.
CN7: COM1 Connector (DB9)
PIN Description PIN Description
1 DCD1
3 TXD1
5 GND
7 RTX1
9 RI1
CN14: COM2 Connector (5x2 Header)
PIN Description PIN Description
1 DCD2
3 RXD2
5 TXD2
7 DTR2
9 GND
CN15: COM3 Connector (5x2 Header)
PIN Description PIN Description
1 DCD3
3 RXD3
5 TXD3
7 DTR3
9 GND
16
2 RXD1
4 DTR1
6 DSR1
8 CTX1
RXD1
DCD1
2 DSR2
DCD2
4 RTX2
RXD2
6 CTX2
8 RI2
TXD2
10 N/C
DTR2
GND
2 DSR3
DCD3
4 RTX3
RXD3
6 CTX3
8 RI3
TXD3
10 N/C
DTR3
GND
5 9
GND
RI1
DTR1
CTX1
TXD1
RTX1
DSR1
1 6
1 2 DSR2
3 4 RTX2
5 6 CTX2
7 8 RI2
9 10 N/C
1 2 DSR3
3 4 RTX3
5 6 CTX3
7 8 RI3
9 10 N/C