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Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units register)
Value range /
Setting options
Access
level
9210
Unsigned / 2
Flow direction
Flow direction filter ap‐
plicable for Process val‐
ues (9204) = 0, 1, 19
and 27.
0
● 0: Positive direction
● 1: Negative direction
● 2: Positive and
negativedirections
● 3: Positive and
negative directions
(symmetric mode)
Read /
write
9235
Float / 4
Frequency val‐
ue high
Upper frequency value.
Upper nominal output
range boundary.
10000.0
[Hz]
0.0 - 12500.0
Read /
write
9237
Float / 4
Frequency val‐
ue low
Lower frequency value.
Lower nominal output
range boundary.
0.0 Hz
0.0 - 12500.0
Read /
write
9215
Float / 4
Upper range
value volume
flow
Upper volume flow val‐
ue that is mapped to
the upper nominal
range boundary selec‐
ted by Frequency value
high (9235). Applicable
if Process value (9204)
= 1.
0.4 % • max.
volume flow
[m
3
/s]
(7500)
-
Read /
write
9217
Float / 4
Lower range
value volume
flow
Lower volume flow val‐
ue that is mapped to
the lower nominal
range boundary selec‐
ted by Frequency value
low (9237). Applicable
if Process value (9204)
= 1.
0.0
[m
3
/s]
(7500)
-
Read /
write
9211
Float / 4
Upper range
value mass flow
Upper mass flow value
that is mapped to the
upper nominal range
boundary selected by
Frequency value high
(9235). Applicable if
Process value (9204) =
0.
0.2 • max.
mass flow
[kg/s]
(7400)
-
Read /
write
9213
Float / 4
Lower range
value mass flow
Lower mass flow value
that is mapped to the
lower nominal range
boundary selected by
Frequency value low
(9237). Applicable if
Process value (9204) =
0.
0.0
[kg/s]
(7400)
-
Read /
write
MODBUS commands
4.10 Modbus holding registers tables
FCT030 Modbus (From firmware 4.0)
Function Manual, 06/2018, A5E39931813-AB
97