Modbus Register Map - GE Moisture monitor series 3 Programming Manual

MODBUS Register Map

Advanced Programming
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
1 0x0000 Chan 1, Oxygen, %
2 0x0001 Chan 1, Oxygen, %
3 0x0002 Chan 1, Oxygen % Error Code
4 0x0003 Chan 2, Oxygen, %
5 0x0004 Chan 2, Oxygen, %
6 0x0005 Chan 2, Oxygen % Error Code
25 0x0018 Chan 1, Oxygen, PPM
26 0x0019 Chan 1, Oxygen, PPM
27 0x001A Chan 1, Oxygen PPM Error Code
28 0x001B Chan 2, Oxygen, PPM
29 0x001C Chan 2, Oxygen, PPM
30 0x001D Chan 2, Oxygen PPM Error Code
1025 0x0400 Chan 1, Dew Point, °C
1026 0x0401 Chan 1, Dew Point, °C
1027 0x0402 Chan 1, Dew Point Error Code
1028 0x0403 Chan 2, Dew Point, °C
1029 0x0404 Chan 2, Dew Point, °C
1030 0x0405 Chan 2, Dew Point Error Code
2049 0x0800 Chan 1, Temperature, °C
2050 0x0801 Chan 1, Temperature, °C
2051 0x0802 Chan 1, Temperature Error Code
2052 0x0803 Chan 2, Temperature, °C
2053 0x0804 Chan 2, Temperature, °C
2054 0x0805 Chan 2, Temperature Error Code
Measurement
Oxygen
Moisture
Temperature
March 2008
Data
MSW
LSW
0-32767
MSW
LSW
0-32767
MSW
LSW
0-32767
MSW
LSW
0-32767
MSW
LSW
0-32767
MSW
LSW
0-32767
MSW
LSW
0-32767
MSW
LSW
0-32767
3-9