Address
(Decimal)
Address
(Hexadecimal)
Register Description
Data Format
Metric Unit
Floating Point Values
27
001A
hex
Enthalpy
32-bit float
kJ/kg
33
0020
hex
Absolute humidity at
NTP
32-bit float
g/m
3
65
0040
hex
Water vapor mass
fraction
32-bit float
ppm
w
Integer Values
257
0100
hex
Relative humidity
16-bit signed
integer
%RH
258
0101
hex
Temperature
16-bit signed
integer
°C
260
0103
hex
Dew point temperature
16-bit signed
integer
°C
261
0104
hex
Dew/frost point
temperature
16-bit signed
integer
°C
262
0105
hex
Dew/frost point
temperature at 1 atm
16-bit signed
integer
°C
263
0106
hex
Dew point temperature
at 1 atm
16-bit signed
integer
°C
264
0107
hex
Absolute humidity
16-bit signed
integer
g/m
3
265
0108
hex
Mixing ratio
16-bit signed
integer
g/kg
266
0109
hex
Wet-bulb temperature
16-bit signed
integer
°C
267
010A
hex
Water vapor
concentration
16-bit signed
integer
ppm
v
268
010B
hex
Water vapor pressure
16-bit signed
integer
hPa
269
010C
hex
Water vapor saturation
pressure
16-bit signed
integer
hPa
270
010D
hex
Enthalpy
16-bit signed
integer
kJ/kg
273
0110
hex
Absolute humidity at
NTP
16-bit signed
integer
g/m
3
Appendix A – Modbus Reference
49
Summary of Contents for HUMICAP HMP4
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