AppendixA:Fahrenheit conversion of Centigrade data

The type of the network variable of the temperature currently used by LM ADAPTER is SNVT_temp_p, and expresses temperature data with Centigrade.By local remote controller or the system controller, the Fahrenheit is used for a temperature display and Centigrade data is used for communication between units.

The conversion table of the Fahrenheit and Centigrade is shown in Table-1.

The network variables and configuration properties which use this conversion table are as follows.

SetPoint

 

- nviSetP_n

 

 

 

SetPoint state

 

- nvoSetP_n

Space Temperature

 

- nvoSpaceTemp_n

Lower Setpoint Cooling

 

- nciCoolLrSetP

Upper Setpoint Heating

 

- nciHeatUpSetP

 

 

 

Table-1

 

 

 

 

 

Conversion table for C/F

 

Centigrade

 

Fahrenheit

 

Room air temp.

 

 

value(℃)

 

value(°F)

 

Temp. setting

 

 

 

 

 

 

 

 

 

 

39

 

102

 

 

 

 

 

38

 

100

 

 

 

 

 

37

 

99

 

 

 

 

 

36

 

97

 

Room air

 

 

35

 

95

 

Temperature

 

 

34

 

93

 

 

 

 

 

 

 

 

 

33

 

91

 

 

 

 

 

32

 

89

 

 

 

 

 

31

 

88

 

 

 

 

 

30

 

87

 

 

 

 

 

29

 

85

 

 

 

 

 

28

 

83

 

 

 

 

 

27

 

81

 

 

 

 

 

26

 

79

 

 

 

 

 

25

 

77

 

Temperature

 

 

 

24

 

75

 

 

 

 

23

 

73

 

setting range

 

 

 

22

 

71

 

 

 

 

 

21

 

69

 

 

 

 

 

20

 

(68)*1

 

 

 

 

 

19

 

67

 

 

 

 

 

18

 

65

 

 

 

 

 

17

 

63

 

 

 

 

 

16

 

61

 

 

 

 

 

15

 

59

 

 

 

 

 

14

 

57

 

 

 

 

 

13

 

55

 

 

 

 

 

12

 

53

 

 

 

 

 

11

 

52

 

 

 

 

 

10

 

50

 

 

 

 

 

9

 

48

 

 

 

 

 

8

 

46

 

 

 

 

 

7

 

45

 

 

 

 

Room air temperature display range

46°F to 102 °F

Temperature setting range

63°F to 87°F

 

 

 

 

 

*Cool/dry operation:67 °F to 87°F

Heat operation : 63°F to 83°F

Auto operation : 67°F to 83°F

*1:68-degree-F use only a room air temperature display.

A temperature setup cannot be performed on the controller. Moreover, it is referred to as 67-degree-F when 20-degree-C is receive.

Cautions

-Local remote controller and the temperature display of a system controller will be 2-degree-F unit.

-When the conversion formula of the Fahrenheit and Centigrade is used, an error arises.