Document Reference No.: ES_000086

ES-R-2x01B-M RS-232 to RS-422/RS-485 Converters Manual

Version 1.0

Clearance No.: ES

©2010 - 2011 EasySYNC Ltd.

9

5 Connector Pinout Information

This section shows the connector pinouts used on the ES-R-2001B-M and ES-R-2101B-M converters.

This allows the use of a straight-through cable between the host computer and the RS-232 port of the

ES-R-2x01B-M.

Pin Number

Description

1

DCD = Data Carrier Detect

2

RXD = Receive Data

3

TXD = Transmit Data

4

DTR = Data Terminal Ready

5

GND = RS232 signal ground

6

DSR = Data Set Ready

7

RTS = Request To Send

8

CTS = Clear To Send

9

No Connect

Table 4

RS-232 Pin-Out for DB-9 connector (DCE)

Pin Number

Description

1

DCD = Data Carrier Detect

2

TXD = Transmit Data

3

RXD = Receive Data

4

DSR = Data Set Ready

5

GND = RS232 signal ground

6

DTR = Data Terminal Ready

7

CTS = Clear To Send

8

RTS = Request To Send

9

No Connect

Table 5

RS-232 Pin-Out for DB-9 connector (DTE)