Rugged Outback RS416 manual 4.6.2 RS232/RS485/RS422 via DB9, DB9 Female DCE Port pin-out

Models: RS416

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4.6.2 RS232/RS485/RS422 via DB9

4.6.2 RS232/RS485/RS422 via DB9

Each port is individually selectable via software to be RS232, RS485 or RS422. The DB9 port and pin-out is shown below.

Figure 16: DB9 Female DCE Port pin-out

 

 

 

 

 

 

 

Pin

RS232 Mode

 

RS485 Mode

 

RS422 Mode

1

CD

 

-

 

-

2

TX

 

TX/RX+

 

TX+

3

RX

 

-

 

RX+

4

DTR

 

-

 

-

5

 

Common (Isolated Ground)

 

6

DSR

 

-

 

RX-

7

CTS

 

TX/RX -

 

TX-

8

RTS

 

-

 

 

 

RI

 

 

 

 

9

(No Connection)

 

-

 

-

Shield

 

 

Chassis Ground

 

Table 5: DB9 Female DCE Port pin-out

 

NOTES:

1.No internal termination is provided.

2.Pins 1, 4, and 6 are connected internally. Pins 7 and 8 are connected internally. The pins are permanently asserted to 5V so that DTE devices that require DCD, DTR, or CTS signals will operate. However, hardware flow control via RTS is not recognized.

3.The Common terminals are optically isolated; however, there is transient voltage protection circuitry between the Common terminals and chassis ground.

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2008 RuggedCom Inc. All rights reserved

Rev104

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Rugged Outback RS416 4.6.2 RS232/RS485/RS422 via DB9, DB9 Female DCE Port pin-out, No internal termination is provided