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Impulse 7804e User Manual

Page 20

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©Sealevel Systems, Inc.
SL9219 - 06/2011

7804e Manual

20

Port #

1

2

3

4

5

6

7

8

RS-422/485

RS-232

TX-

TD

36

12

27

3

75

51

66

42

RX-

RD

37

11

28

2

76

50

67

41

RTS-

RTS

17

31

8

22 56

70

47

61

CTS-

CTS

16

32

7

23 55

71

46

62

TX+

DTR

35

13

26

4

74

52

65

43

RTS+

DSR

18

30

9

21 57

69

48

60

RX+

DCD

38

10

29

1

77

49

68

40

CTS+

RI

15

33

6

24 54

72

45

63

GND

GND

34

14

25

5

73

53

64

44

The RTS output is only available in RS-232 and RS-422 modes. The RTS output is tri-
stated in RS-485 mode and therefore unusable. The CTS input is available in all modes