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Serial Pinout Diagrams

 
RS530 Pinouts

General
RS530 was approved in March 1987. The RS530 interface is a generic connector specification. It's not an actual interface. The connector pinning can be used to support RS422, RS423, V.35 and X.21 to name the most popular ones. The purpose is to replace the large RS449 Sub-D37 connector.

Sub-D25M

Sub-D25F

Male

Female

 

Pi n

Signal

Abbr.

Circuit Name

DT E

DC E

Paired with

1

Shield

 

 

 

 

18

2

Transmitted Data

TxD

BA

Out

In

14

3

Received Data

RxD

BB

In

Out

16

4

Request To Send

RTS

CA

Out

In

19

5

Clear To Send

CTS

CB

In

Out

13

6

Data Set Ready

DSR

CC

In

Out

22

7

Signal Ground

SGND

Ground

 

 

21

8

Data Carrier Detect

DCD

CF

In

Out

10

9

Rtrn Receive Sig. Elmnt Timing

 

DD

In

Out

17

10

Rtrn DCD

 

CF

In

Out

8

11

Rtrn Transmit Sig. Elmnt Timing

 

DA

Out

In

24

12

Rtrn Transmit Sig. Elmnt Timing

 

DB

In

Out

15

13

Rtrn CTS

 

CB

In

out

5

14

Rtrn TxD

 

BA

Out

In

2

15

Transmit Signal Element Timing

 

DB

In

Out

12

16

Rtrn RxD

 

BB

In

Out

3

17

Receive Signal Element Timing

 

DD

In

Out

9

18

Local Loopback

LL

LL

Out

In

1

19

Rtrn RTS

 

CA

Out

In

4

20

Data Terminal Ready

DTR

CD

Out

In

23

21

Remote Loopback

RL

RL

Out

In

7

22

Rtrn DSR

 

CC

In

Out

6

23

Rtrn DTR

 

CD

Out

In

20

24

Transmit Signal Element timing

 

DA

Out

In

11

25

Test Mode

 

TM

In

Out

 

 

RS530 implementation options
 

 

DCE

DTE

RS530

RS232

V.35

X.21

1

1

A

1

2

2

P

2

3

3

R

4

4

4

C

 

5

5

D

 

6

6

E

 

7

7

B

 

8

8

F

 

9

-

X

 

10

-

-

 

11

-

W

 

12

-

AA

 

13

-

-

 

14

-

S

 

15

15

Y

 

16

-

T

 

17

17

V

 

18

-

-

 

19

-

-

 

20

20

-

 

21

-

-

 

22

-

-

 

23

-

B

 

24

-

U

 

25

-

-