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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
253
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9419
Float / 4
Upper range
value density
Upper process density
value that is mapped to
the upper nominal
range boundary se-
lected by Frequency
value high (9435).
Applicable if Process
value (9404) = 2.
Max. density
[kg/m
3
]
(7600)
-
Read /
write
9421
Float / 4
Lower range
value density
Lower process density
value that is mapped to
the lower nominal
range boundary se-
lected by Frequency
value low (9437). Ap-
plicable if Process
value (9404) = 2.
0.08
[kg/m
3
]
(7600)
-
Read /
write
9423
Float / 4
Upper range
value tempera-
ture
Upper medium tem-
perature value that is
mapped to the upper
nominal range bounda-
ry selected by Fre-
quency value high
(9435). Applicable if
Process value (9404) =
3.
Max. medium
temperature
[°C]
(7700)
-
Read /
write
9425
Float / 4
Lower range
value tempera-
ture
Lower medium tem-
perature value that is
mapped to the lower
nominal range bounda-
ry selected by Fre-
quency value low
(9437). Applicable if
Process value (9404) =
3.
Min. medium
temperature
[°C]
(7700)
-
Read /
write
9427
Float / 4
Upper range
value standard
volume flow
Upper standard volume
flow value that is
mapped to the upper
nominal range bounda-
ry selected by Fre-
quency value high
(9435). Applicable if
Process value (9404) =
27.
0.4 % • max.
standard
volume flow
[Sm
3
/h]
(7964)
-
Read /
write