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4bpin, 25bsignal, 5bsignal – AAEON EMB-QM87A User Manual

Page 28: Rs-422, Rs-485

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M i n i - I T X

E M B - Q M 8 7 A

Chapter 2 Quick Installation Guide

2 - 14

7

RTS1

8

CTS1

9

RI1/5V/12V

10

RS-422

Pin

Signal Pin

Signal

1

RS422_TX-

2

RS422_RX+

3

RS422_TX+

4

RS422_RX-

5

GND

6

NC

7

NC

8

NC

9

NC/5V/12V

10

RS-485

Pin

Signal Pin

Signal

1

RS485_D-

2

NC

3

RS485_D+

4

NC-

5

GND

6

NC

7

NC

8

NC

9

NC/5V/12V

10

Note: The max. rating of pin9 is 1A @ 5V & 12V

2.17 COM Port Box Header (COM2~6)

Pin

Signal Pin

Signal

1

DCD

2

RXD

3

TXD

4

DTR