Advanced Programming
3-9
March 2008
MODBUS Register Map
Addresses are tabulated in Table 3-3 below in hexadecimal notation.
Register numbers, in decimal, are equal to the address plus one.
Use the most-significant word (
MSW
) as the register number for
measurement values, which are IEEE 754 floating-point
representations (32-bits) transmitted using a pair of 16-bit registers.
Error codes are integers contained in a single register (Table 3-4 on
page 3-11).
Table 3-3: MODBUS Register Map
Register Address
Measurement
Data
Oxygen
1
0x0000 Chan 1, Oxygen, %
MSW
2
0x0001 Chan 1, Oxygen, %
LSW
3
0x0002 Chan 1, Oxygen % Error Code
0-32767
4
0x0003 Chan 2, Oxygen, %
MSW
5
0x0004 Chan 2, Oxygen, %
LSW
6
0x0005 Chan 2, Oxygen % Error Code
0-32767
25
0x0018 Chan 1, Oxygen, PPM
MSW
26
0x0019 Chan 1, Oxygen, PPM
LSW
27
0x001A Chan 1, Oxygen PPM Error Code
0-32767
28
0x001B Chan 2, Oxygen, PPM
MSW
29
0x001C Chan 2, Oxygen, PPM
LSW
30
0x001D Chan 2, Oxygen PPM Error Code
0-32767
Moisture
1025
0x0400 Chan 1, Dew Point, °C
MSW
1026
0x0401 Chan 1, Dew Point, °C
LSW
1027
0x0402 Chan 1, Dew Point Error Code
0-32767
1028
0x0403 Chan 2, Dew Point, °C
MSW
1029
0x0404 Chan 2, Dew Point, °C
LSW
1030
0x0405 Chan 2, Dew Point Error Code
0-32767
Temperature
2049
0x0800 Chan 1, Temperature, °C
MSW
2050
0x0801 Chan 1, Temperature, °C
LSW
2051
0x0802 Chan 1, Temperature Error Code
0-32767
2052
0x0803 Chan 2, Temperature, °C
MSW
2053
0x0804 Chan 2, Temperature, °C
LSW
2054
0x0805 Chan 2, Temperature Error Code
0-32767
Содержание Moisture monitor series 3
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