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µs/cm Calibration
Conductivity µs/cm calibration is accomplished by writing an entire block of values (non-divisible) using a write multiple registers
command (function code 0x10). Last calibration time can subsequently be read to verify. It utilizes temperature readings of the
probe, so they are not needed to be supplied by the user.
Salinity ppt Calibration
Salinity ppt calibration is accomplished by writing an entire block of values (non-divisible) using a write multiple registers command
(function code 0x10). Last calibration time can subsequently be read to verify.
Address
Description
R/W
Type
Default
0x0320
Conductivity us/cm Calibration Time (s) [3:0]
W
U32
N/A
0x0321
0x0322
Conductivity us/cm Calibration Value [3:0]
W
Float
N/A
0x0323
Address
Description
R/W
Type
Default
0x0330
Salinity ppt Calibration Time (s) [3:0]
W
U32
N/A
0x0331
0x0332
Salinity ppt Calibration Value [3:0]
W
Float
N/A
0x0333
Request
Function Code
1 byte
0x10
Register Address
2 bytes
0x0320
Number Registers
2 bytes
0x0004
Byte Count
1 byte
0x08
Register Values
8 bytes
Conductivity us/cm Calibration Time (s) [3:0]
Conductivity us/cm Calibration Value [3:0]
Request
Function Code
1 byte
0x10
Register Address
2 bytes
0x0330
Number Registers
2 bytes
0x0004
Byte Count
1 byte
0x08
Register Values
8 bytes
Salinity ppt Calibration Time (s) [3:0]
Salinity ppt Calibration Value [3:0]
Modbus Configuration & Commands
