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.
ꢃ CN14, 15, 16: COM 2~COM 4 Connector (5x2 header)
PIN Description PIN Description
1
3
5
7
9
2
4
1
3
5
7
9
DCD
RXD
TXD
DTR
GND
2
4
DSR
RTX
CTX
RI
6
6
8
10
8
N/C
10
ꢃ CN17: COM 1 Connector (DB9)
PIN Description PIN Description
1
2
3
4
5
DCD
RXD
TXD
DTR
GND
6
7
8
9
DSR
RTS
CTS
RI
5
1
9
6
ꢃ JP1: COM 4 Use RS-232 or RS-422/485 Select
1
2
JP1
Description
Short
Open (default)
RS-232
RS-422/485
ꢃ CN12: RS-422/485 Connector (5x2 header)
PIN Description PIN Description
1
3
5
7
9
2
4
1
3
5
7
9
TX-
RX+
GND
RTS+
CTS-
2
4
TX+
RX-
RTS-
CTS+
N/C
6
6
8
10
8
10
17
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