Siemens SITRANS F Operating Instructions Manual page 94

Modbus communication
A.6 Modbus register mapping
The device provides means to remap 20 Modbus registers.
Table A-3 Modbus register mapping
Modbus Data type /
register Size in
bytes
10448 Unsigned / 4 Enable mapping
10450 Unsigned / 2 Register 1 source
10451 Unsigned / 2 Register 1 target
...
10488 Unsigned / 2 Register 20 source
10489 Unsigned / 2 Register 20 target
94
Parameter Description
Activation/deactivation of
the register mapping. A set
bit means that the mapping
pair is activated, a cleared bit
that the mapping pair is de‐
activated.
Bit 0:
Requested register 1 / Target
register 1
...
Bit 19:
Requested register 20 / Tar‐
get register 20
Modbus register that ap‐
pears within Modbus request
is redirected to the parame‐
ter specified by Target regis‐
ter 1
Register of an existing prod‐
uct parameter to which a
Modbus request is redirected
Modbus register that ap‐
pears within Modbus request
is redirected to the parame‐
ter specified by Target regis‐
ter 20
Register of an existing prod‐
uct parameter to which a
Modbus request is redirected
Default value Value range /
[units] Setting op‐
(units regis‐ tions
ter)
0 0 - 1048575
65535 0 - 65535
65535 0 - 65535
65535 0 - 65535
65535 0 - 65535
SITRANS FST020 IP65 (NEMA 4X)
Operating Instructions, 05/2022, A5E41425845-AC
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write