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C-1

Appendix C.  Setting the Station ID

Each MD9, including the one in the MD9 base station, must have a unique
Station ID.  Following is a list of all possible Station IDs with the
corresponding setting of the dip switches.  Here, 1 represents open and 0 is
closed.

When a station is configured for phone to MD9, PC208 DOS software cannot
recognize an MD9 address greater than 127.

SWITCHES

SWITCHES

SWITCHES

ID

1234

5678

ID

1234

5678

ID

1234

5678

43

1101

0100

86

0110

1010

1

1000

0000

44

0011

0100

87

1110

1010

2

0100

0000

45

1011

0100

88

0001

1010

3

1100

0000

46

0111

0100

89

1001

1010

4

0010

0000

47

1111

0100

90

0101

1010

5

1010

0000

48

0000

1100

91

1101

1010

6

0110

0000

49

1000

1100

92

0011

1010

7

1110

0000

50

0100

1100

93

1011

1010

8

0001

0000

51

1100

1100

94

0111

1010

9

1001

0000

52

0010

1100

95

1111

1010

10

0101

0000

53

1010

1100

96

0000

0110

11

1101

0000

54

0110

1100

97

1000

0110

12

0011

0000

55

1110

1100

98

0100

0110

13

1011

0000

56

0001

1100

99

1100

0110

14

0111

0000

57

1001

1100

100

0010

0110

15

1111

0000

58

0101

1100

101

1010

0110

16

0000

1000

59

1101

1100

102

0110

0110

17

1000

1000

60

0011

1100

103

1110

0110

18

0100

1000

61

1011

1100

104

0001

0110

19

1100

1000

62

0111

1100

105

1001

0110

20

0010

1000

63

1111

1100

106

0101

0110

21

1010

1000

64

0000

0010

107

1101

0110

22

0110

1000

65

1000

0010

108

0011

0110

23

1110

1000

66

0100

0010

109

1011

0110

24

0001

1000

67

1100

0010

110

0111

0110

25

1001

1000

68

0010

0010

111

1111

0110

26

0101

1000

69

1010

0010

112

0000

1110

27

1101

1000

70

0110

0010

113

1000

1110

28

0011

1000

71

1110

0010

114

0100

1110

29

1011

1000

72

0001

0010

115

1100

1110

30

0111

1000

74

0101

0010

117

1010

1110

32

0000

0100

75

1101

0010

118

0110

1110

33

1000

0100

76

0011

0010

119

1110

1110

34

0100

0100

77

1011

0010

120

0001

1110

35

1100

0100

78

0111

0010

121

1001

1110

36

0010

0100

79

1111

0010

122

0101

1110

37

1010

0100

80

0000

1010

123

1101

1110

38

0110

0100

81

1000

1010

124

0011

1110

39

1110

0100

82

0100

1010

125

1011

1110

Содержание MD9

Страница 1: ...INSTRUCTION MANUAL MD9 Multidrop Interface Revision 5 03 C o p y r i g h t c 1 9 8 7 2 0 0 3 C a m p b e l l S c i e n t i f i c I n c...

Страница 2: ...her warranties expressed or implied including warranties of merchantability or fitness for a particular purpose CAMPBELL SCIENTIFIC INC is not liable for special indirect incidental or consequential d...

Страница 3: ...on 1 3 Software and Datalogger Compatibility 3 4 ID and Baud Rate Selection 3 5 Maximum Number of Dataloggers and Coax Length 4 6 Telephone to MD9 Network 5 7 Operation 6 A Cable Specifications and So...

Страница 4: ...MD9 Multidrop Interface Table of Contents ii 4 1 ID Switch and Baud Rate Selection Jumpers 4 6 1 Telephone to MD9 Conversion 6 B 1 Break Address Timing Diagram B 1 This is a blank page...

Страница 5: ...ories SC12 cable BNC T connector Voltage 5 Volts from datalogger or SC532 A Current State 0 Standby 1 2 mA State 1 Active 17 mA when transmit line drives network 80 mA State 2 Sleep 3 mA State 3 Pull...

Страница 6: ...ng computer and end last datalogger of the network must be terminated with 75 ohm Coax Terminators in order to prevent signal reflection from one end of the cable to the other Place terminators on the...

Страница 7: ...r 700X Control Module SN1670 or higher 21Xs and 700Xs with lower SNs require a resistor modification which permits the respective 5 Volt power supplies to source enough current to operate an MD9 Conta...

Страница 8: ...when necessary All MD9s in a system must be set at the SAME baud rate 9600 Baud 1200 Baud 300 Baud A B Short A B Open A B Short C D Short C D Short C D Open FIGURE 4 1 ID Switch and Baud Rate Selectio...

Страница 9: ...the battery voltage level The PS512M includes an AC wall transformer for AC operation A solar panel optional may be used if AC is unavailable A PS512M with a serial number less than 1712 does not supp...

Страница 10: ...n MD9 See the timing diagram in Appendix C Upon detecting activity on the coax line remote MD9s convert from State 0 to State 2 State 2 is a sleep mode in which the MD9 begins a timing routine to dete...

Страница 11: ...dataloggers in a network have been interrogated When all data for a particular time period has been collected and stored by the computer the computer s DTR line is released causing the local MD9 to r...

Страница 12: ...MD9 Multidrop Interface 8 This is a blank page...

Страница 13: ...Conductor 20 AWG solid copper 032 Jacket Material PVC Jacket O D 235 Shield Braided tinned copper 100 coverage Resistance 10 1000 Capacitance 16 2pf ft Impedance 75 Ohms Attenuation at 1 MHz 0 29 db...

Страница 14: ...This is a blank page...

Страница 15: ...The marking time must be greater than one times the inverse of BR and the marking time and ADDRESS must be completed within 100 msec This is to say that a 9600 baud the BREAK must be greater than 1 1...

Страница 16: ...This is a blank page...

Страница 17: ...10 12 0011 0000 55 1110 1100 98 0100 0110 13 1011 0000 56 0001 1100 99 1100 0110 14 0111 0000 57 1001 1100 100 0010 0110 15 1111 0000 58 0101 1100 101 1010 0110 16 0000 1000 59 1101 1100 102 0110 0110...

Страница 18: ...000 1001 188 0011 1101 231 1110 0111 146 0100 1001 189 1011 1101 232 0001 0111 147 1100 1001 190 0111 1101 233 1001 0111 148 0010 1001 191 1111 1101 234 0101 0111 149 1010 1001 192 0000 0011 235 1101...

Страница 19: ...e can be modified to connect to the datalogger s power terminals as follows 1 Unplug field cable from datalogger and SC532A 2 Cut off DB9 connector 3 Remove cable sheath exposing positive RED wire and...

Страница 20: ...This is a blank page...

Страница 21: ...This is a blank page...

Страница 22: ...campbellsci com br suporte campbellsci com br Campbell Scientific Canada Corp CSC 11564 149th Street NW Edmonton Alberta T5M 1W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientifi...

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