8.5 Configuration register
Register values/factory settings are described in Chapter 7 "SDI-12 commands and responses".
Changes to the Modbus communication settings will cause a Modbus timeout because the internal communication is restarted
and the stack cannot respond. Successful changes are answered with a regular Modbus response, invalid data with "illegal
data value" and unsupported register addresses with "illegal data address".
Please note:
Changes to the SD-I12 address will reset the entire system and cause a Modbus timeout.
Register name
Register-
number
1)
Data type
Length
Access
mode
min. /
max.
Description
▶
Channel 9
117 (116) float 32
2
R
relative humidity in the
probe housing
▶
Channel 10
119 (118) float 32
2
R
dew point in the probe housing
▶
Channel 11
121 (120) float 32
2
R
temperature of internal
humidity sensor
▶
Channel 12
123 (122) float 32
2
R
current sensor orientation
▶
Channel 13
125 (124) float 32
2
R
sensor orientation during
installation
▶
Channel 14
127 (126) float 32
2
R
discharge
Register name
Register-
number
1)
Data type
Length
Access
mode
Description
Unit level/pressure
201 (200) uint 16
1
R/W
Setting unit for level/pressure
Unit temperature
202 (201) uint 16
1
R/W
Setting unit for temperature
Unit discharge
203 (202) uint 16
1
R/W
Setting unit for discharge
Calculation method
discharge
204 (203) uint 16
1
R/W
Setting calculation method
discharge
Local gravitational acceleration
205 (204) float 32
2
R/W
Setting local gravitational acceleration
Water density
207 (206) float 32
2
R/W
Setting water density
Salinity
209 (208) float 32
2
R/W
Setting salinity
Units imperial/metric
211 (210) uint 16
1
R/W
Select presetting of units
Depth measurement
212 (211) uint 16
1
R/W
Activate depth measurement
Averaging time
213 (212) float 32
2
R/W
Setting averaging time
Continuous measurement
215 (214) uint 16
1
R/W
Activate measurment mode
continuous measurement
SDI-12 address
216 (215) uint 16
1
R/W
Setting SDI-12 asdress
Modbus bus address
217 (216) uint 16
1
R/W
Setting Modbus bus address
Transmission speed
218 (217) uint 16
1
R/W
Setting Modbus transmission speed
Modbus parity
219 (218) uint 16
1
R/W
Setting Modbus parity
1)
the corresponding register start addresses are given in brackets (register number - 1 = register start addresse)
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