In-Situ Aqua TROLL 400 Modbus and SDI-12 Reference Guide - Manual (Page 36)

5. Modbus Registers—Conductivity Sensor
5.1 Header Registers—Conductivity
The sensor map data register offset points to the first register in the sensor data header block.
The current value for this sensor data register map version is 1.
Register Size
(registers)
Mode & Access Level
(R/W)
Data
Type
Description
0501 1 R1 ushort Sensor ID = 35
0502 2 R1 ulong Sensor serial number
(same as probe)
0504 1 R1 16 bits Sensor status
0505 3 R1/W4 time Last factory calibration
0508 3 R1/W4 time Next factory calibration
(0 = none required)
0511 3 R1 time Last user calibration
0514 3 R1/W2 time Next user calibration
(0 = none required)
0517 1 R1 ushort Warm-up time in
milliseconds = 1200
0518 1 R1 ushort Fast sample rate =
1200 milliseconds
0519 1 R1 ushort Number of sensor
parameters (N) = 7
0520 1 R1/W3 ushort Alarm/warning parameter
number (1 – N, default = 1)
0521 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
0522 2 R1/W3 float High alarm set value
(default = 0.0)
36