Definitions of Signals and Direction

EIA-232

Direction

Description

 

 

 

RI

In

Ring Indicator

DCD

In

Data Carrier Detect

RTS

Out

Request To Send

DSR

In

Data Set Ready

TXD

Out

Transmit Data

RXD

In

Receive Data

S-GND

 

Signal Ground

CTS

In

Clear to Send

DTR

Out

Data Terminal Ready

C-GND

 

Chassis Ground

 

 

 

Definitions of Signals and Direction

Page 32

Page 32
Image 32
Perle Systems 1S1P manual Definitions of Signals and Direction, EIA-232 Direction Description