Device Server EIA 232/422/485 Switch Settings

Function

 

 

Switch Settings

 

 

 

 

 

1

2

 

3

4

 

 

 

 

 

 

 

 

EIA-232

Up

Down

 

Down

Down

 

 

 

 

 

 

EIA-422/485 Full-duplex

Down

Up

 

Down

If up, termination.

 

 

 

 

 

If down,

EIA-485 half-duplex

Down

Down

 

Up

 

no termination

 

 

 

 

 

 

RJ-45 Pinouts

RJ-45

EIA-232

EIA-422/485

EIA-485 Half-

Pin

Full-Duplex

Duplex

 

 

 

 

 

1

RI

TxD-

TxD-

 

 

 

 

2

DSR

RxD-

RxD-

 

 

 

 

3

RTS

RTS+

NA

 

 

 

 

4

GND

GND

GND

 

 

 

 

5

TxD

TxD+

TxD+

 

 

 

 

6

RxD

RxD+

RxD+

 

 

 

 

7

SG

SG

SG

 

 

 

 

8

CTS

CTS+

NA

 

 

 

 

9

DTR

RTS-

NA

 

 

 

 

10

DCD

CTS-

NA

 

 

 

 

WARNING: To prevent electric shock, do not remove the cover of this module while unit is powered up. There are no user-serviceable parts inside. Refer servicing to qualified personnel.

CAUTION: This unit has two power inputs. For total isolation from electrical shock and energy hazard, disconnect both power inputs. The device is intended to be mounted in an indoor only type system.

80

Chapter 19 Reference and Certifications

Page 80
Image 80
Digi W manual RJ-45 Pinouts EIA-232 EIA-422/485 EIA-485 Half Full-Duplex