
Appendix A _________________________________________________________ Modbus Reference
VAISALA ________________________________________________________________________ 71
Modbus Register Map
Table 14 Modbus Register Map
Address
(hexadecimal)
Format
Type
MSW
float
w
MSW
float
2
MSW
float
MSW
bit field
Oil factor A (set value) *
MSW
float
Oil factor B (set value) *
MSW
float
integer
(1 … 247 allowed
* Availability of the register depends on the device model.
Actual address bytes used in a Modbus Protocol Data unit.
Least significant word (bits 15 … 0).
Most significant word (bits 31 … 16).
Numeric value in range 0 … 65535.
32 individual values, each 0 or 1.
Floating point number encoded according to IEEE 754.
Register value cannot be changed with Modbus functions.
Register value can be changed with Modbus functions.
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