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17
3.8 Serial Port Connectors
The HS-3000/4M’s CN17, 14, 15 and 16 provide four high speeds
NS16C550 compatible USRT with Read/Receive 16 byte FIFO serial
ports.
CN14, 15, 16: COM 2~COM 4 Connector (5x2 header)
PIN Description
PIN Description
1 DCD 2 DSR
3 RXD 4 RTX
5
TXD
6
CTX
7 DTR 8 RI
9 GND 10 N/C
2
4
6
8
10
1
3
5
7
9
CN17: COM 1 Connector (DB9)
PIN Description
PIN Description
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4
DTR
9
RI
5 GND
16
5
9
JP1: COM 4 Use RS-232 or RS-422/485 Select
JP1 Description
Short RS-232
Open (default) RS-422/485
1 2
CN12: RS-422/485 Connector (5x2 header)
PIN Description
PIN Description
1 TX- 2 TX+
3 RX+ 4 RX-
5 GND 6 RTS-
7 RTS+ 8 CTS+
9 CTS- 10 N/C
2
4
6
8
10
1
3
5
7
9