Table 76 Integer measurement data registers (read-only)
Register
number
Address
Register description
Data format
Scale
factor
Offset
Unit
257
0100
hex
Relative humidity
16-bit signed
integer
100
0
%RH
258
0101
hex
Temperature
16-bit signed
integer
100
0
°C
260
0103
hex
Dew point
temperature
16-bit signed
integer
100
0
°C
261
0104
hex
Dew/frost point
temperature
16-bit signed
integer
100
0
°C
262
0105
hex
Dew/frost point
temperature at 1 atm
16-bit signed
integer
100
0
°C
263
0106
hex
Dew point
temperature at 1 atm
16-bit signed
integer
100
0
°C
264
0107
hex
Absolute humidity
16-bit signed
integer
100
0
g/m
3
265
0108
hex
Mixing ratio
16-bit signed
integer
100
0
g/kg
266
0109
hex
Wet-bulb
temperature
16-bit signed
integer
100
0
°C
267
010A
hex
Water concentration 16-bit signed
integer
1
0
ppm
v
268
010B
hex
Water vapor
pressure
16-bit signed
integer
10
0
hPa
269
010C
hex
Water vapor
saturation pressure
16-bit signed
integer
10
0
hPa
270
010D
hex
Enthalpy
16-bit signed
integer
100
0
kJ/kg
271
010E
hex
Water activity
16-bit signed
integer
10000
0
-
272
010F
hex
Dew point
temperature
difference
16-bit signed
integer
10
0
°C
273
0110
hex
Absolute humidity at
NTP
16-bit signed
integer
100
0
g/m
3
274
0111
hex
Water concentration
in oil
16-bit signed
integer
1
0
ppm
v
277
0114
hex
Relative saturation
16-bit signed
integer
100
0
%RS
Appendix A – Modbus reference
103
Summary of Contents for HMP Series
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