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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
193
Totalizer 2 settings
Table A- 46 Totalizer 2 settings
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8405
Unsigned / 2 Process value
Select process value
for totalization.
0
•
0: Cut-off filtered
mass flow
•
1: Cut-off filtered
volume flow
•
27: Cut-off filtered
standard volume flow
(only hydrocarbon
and gas applications)
Read /
write
8402
Unsigned / 2 Fail-safe behav-
ior
Behavior of the totaliz-
er during the oc-
curence of bad input
value.
0
•
0: RUN; totalization is
continued using the
bad input value.
•
1: HOLD; totalization
is stopped.
•
2: MEMORY; totali-
zation is continued
based on the last in-
coming good value.
Read /
write
8423
Float / 4
Volume upper
alarm limit
Exceeding this limit
causes an alarm when
volume flow is selected
as input.
Max. floating
point value
[m
3
]
(8421)
Read /
write
8425
Float / 4
Volume upper
warning limit
Exceeding this limit
causes a warning
when volume flow is
selected as input.
Max. floating
point value
[m
3
]
(8421)
Read /
write
8427
Float / 4
Volume lower
warning limit
Falling below this limit
causes a warning
when volume flow is
selected as input.
Min. floating
point value
[m
3
]
(8421)
Read /
write
8429
Float / 4
Volume lower
alarm limit
Falling below this limit
causes an alarm when
volume flow is selected
as input.
Min. floating
point value
[m
3
]
(8421)
Read /
write
8431
Float / 4
Volume alarm
hysteresis
Hysteresis that affects
the alarm and warning
limits when volume
flow is selected as
input.
0.0
[m
3
]
(8421)
-
Read /
write
8406
Float / 4
Mass upper
alarm limit
Exceeding this limit
causes an alarm when
mass flow is selected
as input.
Max. floating
point value
[kg]
(8420)
Read /
write