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5.2 Modbus Register
Parameter name
Register address
(HEX / DEC)
Parameter type
Modbus function
number
Parameter range and description
TEMPRATURE
0x0000 /0
INT16, read
3/4
-4000-8000 corresponds to -40.00 ~
80.00℃.
VWC
0x0001 /1
UINT16, read
3/4
0-10000 corresponds to 0-100%
EC
0x0002 /2
UINT16, read
3/4
0-20000 corresponds to 0-20000us/cm
SALINITY
0x0003 /3
UINT16, read
3/4
0-20000 corresponds to 0-20000mg/L
TDS
0x0004 /4
UINT16, read
3/4
0-20000 corresponds to 0-20000mg/L
EPSILON
0x0005 /5
UINT16, read
3/4
0-8200 corresponds to
0.00~82.00
SOIL TYPE
0x0020 /32
UINT16, read-write
3/6/16
0-3
0: Mineral soil
1: sandy soil
2: clay
3: organic soil
TEMP UNIT
0x0021 /33
UINT16, read-write
3/6/16
0:℃
1:℉
EC&TEMP COFF
0x0022 /34
UINT16, read-write
3/6/16
0-100 corresponds to 0.0%-10.0%
SALINITY COFF
0x0023 /35
UINT16, read-write
3/6/16
0-100 corresponds to 0.00-1.00
TDS COFF
0x0024 /36
UINT16, read-write
3/6/16
0-100 corresponds to 0.00-1.00
Modbus ADDRESS
0x0200 /512
UINT16, read-write
3/6/16
0-255
BAUDRATE
0x0201 /513
UINT16, read-write
3/6/16
0-6
0:1200bps
1:2400bps
2:4800bps
3:9600bps
4:19200bps