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MODBUS commands
4.10 Modbus holding registers tables
Channel 2 frequency output settings
Table 4-32
Channel 2 frequency output settings
Modbus
Data type /
register
Size in bytes
8904
Unsigned / 2
8910
Unsigned / 2
8935
Float / 4
8937
Float / 4
8915
Float / 4
8917
Float / 4
8911
Float / 4
86
Parameter
Description
Process value
Select process value
for the current output.
Flow direction
Flow direction filter ap‐
plicable for Process val‐
ues (8904) set to 0, 1,
19, or 27.
Frequency val‐
Upper frequency value.
ue high
Upper nominal output
range boundary.
Frequency val‐
Lower frequency value.
ue low
Lower nominal output
range boundary.
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.
Default value
Value range /
[units]
Setting options
(units register)
-
● 0: Mass flow
● 1: Volume flow
● 2: Density
● 3: Medium
temperature
0
● 0: Positive direction
● 1: Negative direction
● 2: Positive and
negative directions
● 3: Positive and
negative directions
(symmetric mode)
10000.0
0.0 - 12500.0
[Hz]
0.0
0.0 - 12500.0
[Hz]
0.4 % • max.
-
volume flow
[m
/s]
3
(7500)
0.0
-
[m
/s]
3
(7500)
0.2 • max.
-
mass flow-
[kg/s]
(7400)
FCT030 Modbus (From firmware 4.0)
Function Manual, 06/2018, A5E39931813-AB
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
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