RS-422/449 (EIA-449) DTE Cable Pinout

15

1

–

Shield Ground

60

4

59

Send Data (A)

56

5

55

Send Timing (A)

1

6

2

Receive Data (A)

48

7

47

Request to Send (A)

5

8

6

Receive Timing (A)

37

9

38

Clear to Send (A)

41

10

–

Local Loopback

9

11

10

Data Mode (A)

33

12

34

Terminal Ready (A)

13

13

14

Receive Ready (A)

52

17

51

Terminal Timing (A)

36

19

–

Signal Ground

4

20

–

Receive Common

59

22

60

Send Data (B)

55

23

56

Send Timing (B)

2

24

1

Receive Data (B)

47

25

48

Request to Send (B)

6

26

5

Receive Timing (B)

38

27

37

Clear to Send (B)

10

29

9

Data Mode (B)

34

30

33

Terminal Ready (B)

14

31

13

Receiver Ready (B)

51

35

52

Terminal Timing (B)

57

37

–

Send Common

26 to 25

–

–

–

18 to 17

–

–

–