Hach LDO User Manual page 39

Appendix A Modbus Register Information
Group Name Tag Name
Oxygen
Measurements
Concentration
Percent
Measurements
Saturation
Measurements Temperature
Total Phase
Diagnostics
Shift
Blue Phase
Diagnostics
Shift
Red Phase
Diagnostics
Shift
Blue
Diagnostics
Amplitude
Diagnostics Red Amplitude
Diagnostics Version
Altitude/
Settings
Pressure
Settings Salinity
Calibration Offset Corr
Calibration Slope Corr
Calibration Calib Value
Settings Conc Units
Settings Alt Press Units
Settings Temp Units
Settings Sensor Code
Settings Sensor Name
Settings Signal Avg
Diagnostics Serial Number
Table 8 Sensor Modbus Registers
Register # Data Type Length
40001 Float
40003 Float
40005 Float
40007 Float
40009 Float
40011 Float
40013 Float
40015 Float
40017 Float
40041 Float
40043 Float
40045 Float
40047 Float
40037 Float
40091 Integer
40092 Integer
40093 Integer
40094 String
40099 String
40105 Integer
40114 String
R/W Units (U)
2 R ppm
2 R Percent
Celsius/
2 R
Fahrenheit
2 R degrees
2 R degrees
2 R degrees
2 R none
2 R none
2 R none
see Alt Press
2 R/W
Units
2 R/W none
2 R/W see Conc Units
2 R/W none
2 R/W see Conc Units
1 R/W enumerated
1 R/W enumerated
1 R/W enumerated
5 R/W none
6 R/W none
1 R/W seconds
6 R none
Range
0..20
0..300
-5.1..60 / 0..150
-360..360
-360..360
-360..360
0..1
0..1
0..99.0
0.15000 ft, 0-5000 m,
0..1000 torr, 0..1000 mmHg
0..500
-5.00..5.00
0.5..1.5
0..20
ppm=2, mg/l=0, Percent =
10
feet=43, meter=13, torr=47,
mmHg=45
Celsius=25, Fahrenheit=26
Calibration Code
User Name
0..1000
Production Code
39