External serial port 2 connector (com2) – Avalue RITY82 User Manual

Page 11

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Quick Reference Guide

RITY82 Quick Reference Guide 11

2.2.2

External Serial Port 2 connector (COM2)

In RS-232 Mode

Signal

PIN PIN

Signal

DCDB#

1

2

RXDB

TXDB

3

4

DTRB#

GND

5

6

DSRB#

RTSB#

7

8

CTSB#

RIB#

9

In RS-422 Mode

Signal

PIN PIN

Signal

TxD1-

1

2

TxD1+

RxD1+

3

4

RxD1-

GND

5

6

NC

NC

7

8

NC

NC

9

In RS-485 Mode

Signal

PIN PIN

Signal

DATA1-

1

2

DATA1+

NC

3

4

NC

GND

5

6

NC

NC

7

8

NC

NC

9