Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 193 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
191
A.9.4.3 Totalizers
Totalizer 1 settings
Table A- 45 Totalizer 1 settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8305 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
8302 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
8323 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
]
(8321)
Read /
write
8325 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
]
(8321)
Read /
write
8327 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
]
(8321)
Read /
write
8329 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
]
(8321)
Read /
write
8331 Float / 4 Volume alarm
hysteresis
Hysteresis that affects
the alarm and warning
limits when volume
flow is selected as
input.
0.0
[m
3
]
(8321)
- Read /
write