Basic Documentation

Configurations
Modbus registers
4
8 | 14
A6V12297475_en--_a
4.3 Modbus registers
Holding
Register
(16-bit)
No.
Description
Range
Unit
Scaling
Default
R/W
1
Temperature value
-327…327 °C
-556.6…620.6 °F
°C
°F
0.01
-
R
2
Temperature
reliability
0 – No error
1 – Bad reliability,
unavailable
-
-
-
R
3
Relative humidity
value
0…100 %
%
0.01
-
R
4
Humidity reliability
0 – No error
1 – Bad reliability,
unavailable
-
-
-
R
401
System unit
0 – Celsius
1 – Fahrenheit
others - invalid
value to be
discard
-
-
0
RW
1286
SW version: Major &
Minor versions
-
-
-
-
R
1287
SW version: Build
version
-
-
-
-
R
764
Modbus address
1…247
-
-
1
RW
765
Baud rate
0 = Auto
1 = 9600bps
2 = 19200bps
3 = 38400bps
4 = 57600bps
5 = 76800bps
6 = 115200bps
-
-
0
RW
766
Transmission format
(start bits-data bits-
parity-stop bits)
0 = 1-8-E-1
1 = 1-8-O-1
2 = 1-8-N-1
3 = 1-8-N-2
-
-
0
RW
NOTES:
● The register number is counted from 1.
● In the case of a multiple writing command from the master with invalid values,
the sensor rejects the command with an error notice. The register values
remain unchanged.
● Software version format: major version is 1 byte, minor version is 1 byte and
build version is 2 bytes, such as [2.01.33] = 0x02010021.