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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
231
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
10142
Float / 4
Lower range
value viscosity
Lower process viscosi-
ty value that is mapped
to the lower nominal
range boundary se-
lected by Frequency
value low (9237). Ap-
plicable if Process
value (9204) = 21 or
29.
0.0
[m²/s]
(7524)
-
Read /
write
10168
Float / 4
Upper range
value ROC
Upper rate of change
value that is mapped to
the upper nominal
range boundary se-
lected by Frequency
value high (9235).
Applicable if Process
value (9204) = 36.
1.0
[m/s²]
(8564)
-
Read /
write
10170
Float / 4
Lower range
value ROC
Lower rate of change
value that is mapped to
the lower nominal
range boundary se-
lected by Frequency
value low (9237). Ap-
plicable if Process
value (9204) = 36.
0.0
[m/s²]
(8564)
-
Read /
write
9208
Float / 4
Damping value Time constant of
damping filter for fre-
quency output signal.
0.0
[s]
0.0 - 100.0
Read /
write
9591
Unsigned / 2 Fail-safe activa-
tion condition
Fail-safe activation
condition.
1
•
0: Bad status of se-
lected process value
•
1: Active Mainte-
nance alarm or Fail-
ure (NAMUR)
Read /
write
9281
Unsigned / 2 Fail-safe min.
time
Minimum time the
output stays in fail-safe
behavior.
0
[s]
0 - 100
Read /
write
9239
Unsigned / 2 Fail-safe behav-
ior
Frequency output reac-
tion in case of a fault.
2
•
0: Frequency value
low
•
1: Frequency value
high
•
2: Last valid value
•
3: Disabled
•
4: Custom value
Read /
write
Содержание SITRANS F Series
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