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COM/AWT540/PB–EN Rev. C
| Navigator 540 | Transmitter
Appendix B – Modbus tables
B.1 Register tables
Table name
Table type
Data type
Start address
End address
Digital I/O status
Input coils
Unsigned 8 bit
0
999
Alarm acknowledgement
Output coils
Unsigned 8 bit
0
499
Action commands
Output coils
Unsigned 8 bit
500
949
Read-only single precision float parameters
Input registers
Float
30000
30999
Read-only 32 bit parameters
Input registers
Unsigned 32 bit
31000
31999
Read-only 16 bit parameters
Input registers
Unsigned 16 bit
32000
32999
Read-only 8 bit parameters
Input registers
Unsigned 8 bit
33000
33999
Read-only string parameters
Input registers
Unsigned 8 bit
34000
34999
Read/Write single precision float parameters
Holding registers
Float
40000
40999
Read/Write 16 bit parameters
Holding registers
Unsigned 16 bit
42000
42999
Read/Write 8 bit parameters
Holding registers
Unsigned 8 bit
43000
43999
Read/Write string parameters
Holding registers
Unsigned 8 bit
44000
44999