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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
209
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8929
Float / 4
Lower range
value standard
volume flow
Lower standard volume
flow value that is
mapped to the lower
nominal range bounda-
ry selected by Fre-
quency value low
(8937). Applicable if
Process value (8904) =
27.
0.0
[Sm
3
/h]
(7964)
-
Read /
write
10024
Float / 4
Upper range
value velocity
Upper velocity value
that is mapped to the
upper nominal range
boundary selected by
Frequency value high
(8935). Applicable if
Process value (8904) =
18, 19 or 31.
1.0
[m/s]
(8014 / 7648)
-
Read /
write
10026
Float / 4
Lower range
value velocity
Lower velocity value
that is mapped to the
lower nominal range
boundary selected by
Frequency value low
(8937). Applicable if
Process value (8904) =
18, 19 or 31.
0.0
[m/s]
(8014 / 7648)
-
Read /
write
10028
Float / 4
Upper range
value pressure
Upper process pres-
sure value that is
mapped to the upper
nominal range bounda-
ry selected by Fre-
quency value high
(8935). Applicable if
Process value (8904) =
20.
100000.0
[Pa]
(7548)
-
Read /
write
10030
Float / 4
Lower range
value pressure
Lower process pres-
sure value that is
mapped to the lower
nominal range bounda-
ry selected by Fre-
quency value low
(8937). Applicable if
Process value (8904) =
20.
0.0
[Pa]
(7548)
-
Read /
write