In-Situ Aqua TROLL 400 Modbus and SDI-12 Reference Guide - Manual (Page 46)

Register Size
(registers)
Mode & Access Level
(R/W)
Data
Type
Description
Level
1054 2 R1 float Measured value, L
m
1056 1 R1/W2 ushort Parameter ID
3 = level, depth (default)
4 = level, top of casing
5 = level, elevation
1057 1 R1/W2 ushort Units ID
33 = millimeters
34 = centimeters
35 = meters
37 = inches
38 = feet (default)
1058 1 R1 ushort Data Quality ID
1059 2 R1/W3 float Off line sentinel value (default = 0.0)
1061 1 R1 16 bits Available Units = 0x0037 (55)
6.3 Calibration Registers—Level
Values in the calibration registers determine how sensor parameters are calculated.
Register Size
(registers)
Mode & Access Level
(R/W)
Data
Type
Description
1100 2 R1/W3 float Specific Gravity (default = 1.0)
1102 2 R1/W3 float Pressure Offset, P
O
(default = 0.0)
1104 2 R1/W3 float Level Reference, L
R
(default = 0.0)
1106 2 R1/W3 float Pressure Reference, P
R
(default = 0.0)
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