Rosemount 3095FB - Page 55

Model 3095FB Multivariable Transmitter with Modbus Protocol
Modbus Protocol Guide
Page 24 of 79
Below is an example of a Modbus message for reading DP (register 401) of 100.25 for each of
the Floating Point Format Codes.
Table 3-6 Floating Point Format Code = 0
Address Function Starting reg-
ister
# of registers Error check
Query 01 04 01 90 00 02 XXXX
Address Function Byte count Register data
bytes
Error check
Response 01 04 04 42 C8 80 00 XXXX
Table 3-7 Floating Point Format Code = 1
Address Function Starting reg-
ister
# of registers Error check
Query 01 04 01 90 00 02 XXXX
Address Function Byte count Register data
bytes
Error check
Response 01 04 04 80 00 42 C8 XXXX
Table 3-8 Floating Point Format Code = 2
Address Function Starting reg-
ister
# of registers Error check
Query 01 04 01 90 00 02 XXXX
Address Function Byte count Register data
bytes
Error check
Response 01 04 04 00 80 C8 42 XXXX
Table 3-9 Floating Point Format Code = 3
Address Function Starting reg-
ister
# of registers Error check
Query 01 04 01 90 00 02 XXXX
Address Function Byte count Register data
bytes
Error check
Response 01 04 04 C8 42 00 80 XXXX