Parameter 2: 19

 => 'NRPN 1 LSB'
the term LSB refers to the fact that the value from the dial is send with the LSB controller '26'

Midi-Message (Hex format) :  

Bx 63 nn  
Bx 62 NN
Bx 26 VV

x: channel (see parameter 1),

nn: NRPN-Adress MSB fixed to '00'
NN: NRPN-Adress LSB   (see parameter 3)
VV LSB value from Dial

Example: 

BE 63 00 BE 62 3F BE 26 03  
(same with running status: BE 63 00 62 3F 26 03  )


( NRPN 00 3F  - on channel 15 MSB Value 03 )

Parameter 3  ( NN )

Meaning of
NRPN (non registered parameters) depends on each manufacturer

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127