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LE-37E

User’s Manual

-15-

2.4.4

COM1: RS232 DB9 connector

Pin

Signal

Pin

Signal

1

DCD

2

RXD

3

TXD

4

DTR

5

GND

6

DSR

7

RTS

8

CTS

9

Set by JP2

10

Key

CN_COM2: RS232/422/485 10-pin header (Pitch 1.27mm x 2.54mm)

Pin

Signal

Pin

Signal

1

DCD/ 422TX-/ 485-

2

RXD/ 422TX+/ 485+

3

TXD/ 422RX+

4

DTR/ 422RX-

5

GND

6

DSR

7

RTS

8

CTS

9

Set by JP1

10

Key

Use JCSEL1 and JCSEL2 to select communication mode

CN_COM2

1

2

9

10

CN_COM3/4

CN_COM5/6

1

2

19

20

1

2

20

19

2

1

6

5

JP1

JP2

2

6

1

5

JCSEL1

1

2

11

12

JCSEL2

1

2

5

6

COM1