Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 225 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
223
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
10166 Float / 4 Lower range
value ROC
Lower rate of change
value that is mapped to
the lower nominal
range boundary se-
lected by Current mode
(9106). Applicable if
Process value (9102) =
36.
0.0
[m/s²]
(8564)
- Read /
write
9107 Float / 4 Damping value Time constant of
damping filter for cur-
rent output signal.
0.0
[s]
0.0 - 100.0 Read /
write
9591 Unsigned / 2 Filter-safe acti-
vation 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
9114 Unsigned / 2 Fail-safe behav-
ior
Current output reaction
in case of a fault.
0
•
0: Lower fault current
• 1: Upper fault current
•
2: Last valid value
• 3: Disabled
•
4: Custom value
Read /
write
9115 Float / 4 Fail-safe value Output value in case of
a fault and when Fail-
safe behavior (9114) is
configured to 4.
0.0
[mA]
0.0 - 25.0 Read /
write
7153 Float / 4 Forced value Forced value when
forcing is active.
4.0
[mA]
3.5 - 25.0 Read /
write