In-Situ Aqua TROLL 400 Modbus and SDI-12 Reference Guide - Manual (Page 29)

Register Size
(registers)
Mode & Access Level
(R/W)
Data
Type
Description
0020 1 R1/W3 ushort Alarm/warning parameter number
(1 – N, default = 1)
0021 1 R1/W3 16 bits Alarm and warning enable bits
(default = 0)
Bit 0 = High alarm enabled
Bit 1 = High warning enabled
Bit 2 = Low warning enabled
Bit 3 = Low alarm enabled
Bit 4 = Sensor calibration warning
0022 2 R1/W3 float High alarm set value (default = 0.0)
0024 2 R1/W3 float High alarm clear value (default = 0.0)
0026 2 R1/W3 float High warning set value (default = 0.0)
0028 2 R1/W3 float High warning clear value
(default = 0.0)
0030 2 R1/W3 float Low warning clear value
(default = 0.0)
0032 2 R1/W3 float Low warning set value (default = 0.0)
0034 2 R1/W3 float Low alarm clear value (default = 0.0)
0036 2 R1/W3 float Low alarm set value (default = 0.0)
4.2 Sensor Serial Number
This field returns the serial number of the installed sensor cap. The probe returns zero if the
sensor cap is not installed or is expired.
4.3 Sensor Status
Bit 9 of the sensor status register is set to indicate when the sensor cap is not installed.
4.4 Last Factory Calibration
This field returns the start time of the installed sensor cap. If the cap has not been used, the cap
manufactured time is returned. The probe returns zero if the sensor cap is not installed.
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