Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 164 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
162
Operating Instructions, 08/2017, A5E37367739-AC
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
1312 Float / 4 Sensor crystal
projection
Length of the
crystal projec-
tion onto the
emitting surface
of the sensor.
0.03409
[m]
(8556)
0.0 - 3.0 Read /
write
1314 Float / 4 Sensor phase
velocity
The velocity at
which the wave
fronts traverse
the interface
between the
wedge and the
pipe.
3695.5
[m/s]
(7648)
2000.0 - 10000.0 Read /
write
1316 Float / 4 Sensor inactive
wedge
The part of the
wedge that is
not part of the
sound path.
0.00076
[m]
(8556)
0.0 - 0.05 Read /
write
1318 Float / 4 Sensor fixed
time
Fixed time in
sensor wedge.
10.61E-6
[s]
2.0E-6 - 200.0E-6 Read /
write
1320 Float / 4 Mounting hole
offset
Distance be-
tween spacer
hole and sensor
front face.
0.00953
[m]
(8556)
0.0 - 0.05 Read /
write
1322 Unsigned / 2 Pipe travel time Designated
multiplier on the
crystal projec-
tion value used
in formula for
calculating pipe
travel.
0 0 - 200 Read /
write
1711 Float / 4 Temperature
compensation
factor
Sensor tempera-
ture compensa-
tion slope factor.
0.00063761
[1/K]
0.0001 - 0.0009 Read /
write
1713 Unsigned / 2 Reference
temperature
Sensor refer-
ence (nominal)
temperature.
0
•
0: 21 °C
• 1: 60 °C
•
2: 93 °C
Read /
write