Siemens SITRANS F Series, Operating Instructions Manual, Page: 259 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
257
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9440 Float / 4 Fail-safe value Output value in case of
a fault and when Fail-
safe behavior (9439) is
configured to 4.
0.0
[Hz]
0.0 - 12500.0 Read /
write
7163 Float / 4 Forced value Forced value when
forcing is active.
1.0
[Hz]
0.0 - 12500.0 Read /
write
Channel 4 pulse output settings
Table A- 63 Channel 4 pulse output settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9460 Unsigned / 2 Process value Select process value
for the pulse output.
0
•
0: Mass flow
•
1: Volume flow
•
27: Standard volume
flow rate (only hydro-
carbon and gas ap-
plications)
Read /
write
9462 Unsigned / 2 Flow direction Flow direction filter. 0
• 0: Positive direction
•
1: negative direction
• 2: Positive and nega-
tive directions
Read /
write
9465 Float / 4 Amount of vol-
ume
Amount value to gen-
erate an output pulse.
Applicable if process
value (9460) is set to 1.
0.001
[m
3
]
(8993)
- Read /
write
9463 Float / 4 Amount of
mass
Amount value to gen-
erate an output pulse.
Applicable if process
value (9460) is set to 0.
1.0
[kg]
(8992)
- Read /
write
9467 Float / 4 Amount of
standard vol-
ume
Amount value to gen-
erate an output pulse.
Applicable if process
value (9460) is set to
27.
1.0
[Sl]
(8994)
- Read /
write
10255 Unsigned / 2 Pulses per
amount
Number of pulses
which will be output
when configured
amount is reached.
1 - Read /
write
9474 Float / 4 Pulse width Pulse duration. 0.1
[s]
0.00004 - 4.0 Read /
write