The device provides means to remap 20 Modbus registers.
Table A-3 Modbus register mapping
Modbus
register
Data type /
Size in
bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting op‐
tions
Access
level
10448 Unsigned /
4
Enable mapping 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 / Tar‐
get register 1
…
Bit 19:
Requested register 20 / Tar‐
get register 20
0 0 - 1048575 Read /
write
10450 Unsigned /
2
Register 1 source Modbus register that ap‐
pears within Modbus re‐
quest is redirected to the pa‐
rameter specified by Target
register 1
65535 0 - 65535 Read /
write
10451 Unsigned /
2
Register 1 target Register of an existing prod‐
uct parameter to which a
Modbus request is redirected
65535 0 - 65535 Read /
write
...
10488 Unsigned /
2
Register 20 source Modbus register that ap‐
pears within Modbus re‐
quest is redirected to the pa‐
rameter specified by Target
register 20
65535 0 - 65535 Read /
write
10489 Unsigned /
2
Register 20 target Register of an existing prod‐
uct parameter to which a
Modbus request is redirected
65535 0 - 65535 Read /
write
Modbus communication
A.4 Modbus register mapping
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 137
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