Ers-byte connector mapping, External serial port 1 connector (com1), External serial port 3/4 connector (com3/4) – Avalue ERS-BYTE-10COM User Manual

Page 12: 1 ers-byte connector mapping

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ERS-BYTE

12 ERS-BYTE Quick Reference Guide

2.1 ERS-BYTE connector mapping

2.1.1

External Serial Port 1 connector (COM1)

Pin

RS-232

RS-485

RS-422

1

DCD

TXD-/RXD-

TXD-

2

RXD

TXD+/RXD+

TXD+

3

TXD

RXD+

4

DTR

RXD-

5

GND

GND

GND

6

DSR

7

RTS

8

CTS

9

RI

2.1.2

External Serial Port 3/4 connector (COM3/4)

Pin

RS-232

RS-485

RS-422

1

DCD

TXD-/RXD-

TXD-

2

RXD

TXD+/RXD+

TXD+

3

TXD

RXD+

4

DTR

RXD-

5

GND

GND

GND

6

DSR

7

RTS

8

CTS

9

RI