beautypg.com

Rs-423/232 dte to dce (no handshake to dce), Rs-423/232 dte to dte (soft or no handshake to dte, Rs-422 – Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module User Manual

Page 48

background image

Publication 1747-UM005B-EN-P - March 2006

4-10 Installation and System Configuration

RS-423/232 DTE to DCE (No Handshake to DCE)

RS-423/232 DTE to DTE (Soft or No Handshake to DTE

RS-422

NC

RXD

TXD

DTR

COM

DSR

RTS

CTS

NC

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

8

3

2

20

7

6

4

5

22

CD

COM

RI

RXD

TXD

DTR

DSR

RTS

CTS

(1)

(1)

(1)

Connect DSR to DTR and CTS to RTS when using devices that cannot disable their hardware handshaking.

Peripheral

Interface Module

9-pin 25-pin

DTE

DCE

NC

RXD

TXD

DTR

COM

DSR

RTS

CTS

NC

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

8

3

2

20

7

6

4

5

22

CD

COM

RI

RXD

TXD

DTR

DSR

RTS

CTS

(1)

(1)

(1)

Connect DSR to DTR and CD, and CTS to RTS when using devices that cannot disable their handshaking.

Peripheral

Interface Module

9-pin 25-pin

DTE

DTE

TXD-

RXD-

COM

RXD+

TXD+

1

2

3

4

5

6

7

8

9

RXD-

TXD-

COM

TXD+

RXD+

Peripheral

Interface Module

DTE