Siemens SITRANS F Series Operating Instructions Manual page 209

Modbus Data type /
register Size in bytes
8915 Float / 4
8917 Float / 4
8911 Float / 4
8913 Float / 4
8919 Float / 4
8921 Float / 4
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD
Parameter Description
Upper range Upper volume flow val‐
value volume ue that is mapped to
flow the upper nominal
range boundary selec‐
ted by Frequency value
high (8935). Applicable
if Process value (8904)
= 1.
Lower range Lower volume flow val‐
value volume ue that is mapped to
flow the lower nominal
range boundary selec‐
ted by Frequency value
low (8937). Applicable
if Process value (8904)
= 1.
Upper range Upper mass flow value
value mass flow that is mapped to the
upper nominal range
boundary selected by
Frequency value high
(8935). Applicable if
Process value (8904) =
0.
Lower range Lower mass flow value
value mass flow that is mapped to the
lower nominal range
boundary selected by
Frequency value low
(8937). Applicable if
Process value (8904) =
0.
Upper range Upper process density
value density value that is mapped to
the upper nominal
range boundary selec‐
ted by Frequency value
high (8935). Applicable
if Process value (8904)
= 2.
Lower range Lower process density
value density value that is mapped to
the lower nominal
range boundary selec‐
ted by Frequency value
low (8937). Applicable
if Process value (8904)
= 2.
A.9 Modbus holding registers tables
Default value Value range /
[units] Setting options
(units register)
0.4 % • max. -
volume flow
[m /s]
3
(7500)
0.0 -
[m /s]
3
(7500)
0.2 • max. -
mass flow-
[kg/s]
(7400)
0.0 -
[kg/s]
(7400)
1600 -
[kg/m ]
3
(7600)
600 -
[kg/m ]
3
(7600)
Modbus communication
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
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