Mega System Tech RS485 Manuale Utente

NET101 User’s Manual -4-

Chapter 1: Introduction

Section 5. NET101 DB-9 Pin Assignment

Fig.4 DB-9 Male

NET101 DB-9 PIN Assignment

DB-9 Pin No.

RS-232

RS-422

RS-485

Full Duplex

RS-485

Half-Duplex

1

DCD RxD- RxD-

2

RxD RxD+ RxD+

3

TxD

TxD+

TxD+

TxD+ / RxD+

4

DTR

TxD-

TxD-

TxD- / RxD-

5

GND GND GND GND

6

DSR

7

RTS

8

CTS

9

RI

Fig.5 NET101 DB-9 PIN assignment