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Quick Reference Guide

RITY122 Quick Reference Guide

11

2.1 RITY122 connector mapping

2.1.1 External Serial Port 1 connector (COM1)

In RS-232 Mode

Signal

PIN

PIN

Signal

DCDA#

1

6

DSRA#

RXDA

2

7

RTSA#

TXDA

3

8

CTSA#

DTRA#

4

9

RIA#

GND

5

In RS-422 Mode

Signal

PIN

PIN

Signal

TxD1-

1

6

NC

TxD1+

2

7

NC

RxD1+

3

8

NC

RxD1-

4

9

NC

GND

5

In RS-485 Mode

Signal

PIN

PIN

Signal

DATA1-

1

6

NC

DATA1+

2

7

NC

NC

3

8

NC

NC

4

9

NC

GND

5

1 2 ... 6 7 8 9 10 11 12 13 14 15

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