Integer Byte Order; Float Byte Order - Siemens SITRANS F Operating Instructions Manual

A.7

Integer byte order

The device is able to adjust the byte order of integer values.
Table A-4 Integer byte order
Modbus Data type /
register Size in
bytes
8295 Unsigned / 2 Integer order byte
A.8

Float byte order

The device is able to adjust the byte order of floating-point values.
Table A-5 Float byte order
Modbus Data type /
register Size in
bytes
8296 Unsigned / 2 Float byte order
SITRANS FST020 IP65 (NEMA 4X)
Operating Instructions, 05/2022, A5E41425845-AC
Parameter Description
The integer byte order used
in Modbus messages.
0: MSB - LSB (big endian)
1: LSB - MSB (little endian)
MSB = most significant byte /
high byte
LSB = least significant byte /
low byte
Parameter Description
The float byte order used in
Modbus messages.
0: 1-0-3-2
1: 0-1-2-3
2: 2-3-0-1
3: 3-2-1-0
The first mentioned byte is
the first byte sent.
Byte 3 corresponds to the
left-most byte (MSB) of a 32
bit floating point number in
big endian format, byte 0 to
the right-most byte
Modbus communication
A.8 Float byte order
Default value Value range /
[units] Setting op‐
(units regis‐ tions
ter)
MSB - LSB (big 0 - 1
endian)
Default value Value range /
[units] Setting op‐
(units regis‐ tions
ter)
3-2-1-0 0 - 3
Access
level
Read /
write
Access
level
Read /
write
95