Michell Instruments Optidew

Optidew User’s Manual
Michell Instruments 49
APPENDIX B
Register Address
Dec Hex Access Data Type Description Comment
Instrument Information
0 0000 R|W uint16 Instrument Modbus Address
2 0002 R uint32 Instrument Serial MS
3 0003 Instrument Serial LS
4 0004 R uint16 Instrument Firmware Version
5 0005 R uint16 Register Map Version
Measured and Calculated Values
6 0006 R float Dew/Frost point MS
Units = Temperature
Unit
7 0007 R Dew/Frost point LS
8 0008 R float Ambient Temp MS
Units = Temperature
Unit
9 0009 R Ambient Temp LS
10 000A R float Pressure MS Units = Pressure Unit
11 000B R Pressure LS
12 000C R float Relative Humidity MS
13 000D R Relative Humidity LS
14 000E R float ppm (vol) MS
Default = Dry Basis,
register 105 for wet
basis
15 000F R ppm (vol) LS
16 0010 R float ppm (wt.) MS
Mol weight of carrier
set in register 108
17 0011 R ppm (wt.) LS
18 0012 R float Absolute Humidity MS Units = g/m3
19 0013 R Absolute Humidity LS
20 0014 R float Mixing Ratio MS Units = g/kg
21 0015 R Mixing Ratio LS
22 0016 R float Wet Bulb MS
Units = Temperature
Unit
23 0017 R Wet Bulb LS
24 0018 R float Water Vapour Pressure MS Units = Pascal
25 0019 R Water Vapour Pressure LS
30 001E R uint16 Temperature Unit Set using register 100
0=°C
1=°F