Siemens SITRANS F series Operating Instructions Manual page 235

Modbus Data type /
register Size in bytes
9267 Float / 4
10155 Unsigned / 2
9274 Float / 4
9277 Unsigned / 2
9591 Unsigned / 2
9281 Unsigned / 2
9261 Unsigned / 2
7431 Float / 4
7158 Float / 4
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description
Amount of Amount value to gen-
standard vol- erate an output pulse.
ume Applicable if process
value (9260) is set to
27.
Pulses per Number of pulses
amount which will be output
when configured
amount is reached.
Pulse width Pulse duration.
Polarity Logical polarity of
pulse output.
Fail-safe activa- Fail-safe activation
tion condition condition.
Fail-safe min. Minimum time the
time output stays in fail-safe
behavior.
Fail-safe behav- Pulse output reaction
ior in case of a fault.
Only applicable if Re-
dundancy mode (9280)
= 0.
Fail-safe value Output value in case of
a fault and when Fail-
safe behavior (9261) is
configured to 4.
Forced value Forced value when
forcing is active.
A.9 Modbus holding registers tables
Default value Value range /
[units] Setting options
(units regis-
ter)
1.0 -
[Sl]
(8994)
1 -
0.1 0.00004 - 4.0
[s]
0
0: Active high level
•
1: Active low level
•
1
0: Bad status of se-
•
lected process value
1: Active Mainte-
•
nance alarm or Fail-
ure (NAMUR)
0 0 - 100
[s]
0
0: Last valid value
•
1: Hold. Value 0.0
•
substitutes the actual
input value
2: Disabled
•
3: Custom value
•
0.0 0.0 - 12500.0
[pulses/s]
1.0 0.0 - 12500.0
[pulses/s]
Modbus communication
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
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