3.8Serial 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

12

34

56

78

9 10

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

 

 

59

1 6

JP1: COM 4 Use RS-232 or RS-422/485 Select

JP1

Description

1 2

Short

RS-232

 

Open (default)

RS-422/485

 

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

12

34

56

78

9 10

17