Siemens SITRANS F series Operating Instructions Manual page 161

Modbus Data type /
register Size in bytes
1223 Unsigned / 2
1224 Unsigned / 2
Process medium characteristics
Table A- 17 Process medium characteristics
Modbus Data type /
register Size in bytes
1825 Float / 4
1701 Float / 4
1703 Float / 4
1705 Float / 4
1707 Float / 4
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description
Downstream Compensation for
pipe geometry downstream pipe ge-
ometry.
Downstream The distance to the
distance downstream flow dis-
turbance in multiples of
inner pipe diameter.
Parameter Description
Expected sound Expected sound veloci-
velocity ty in the medium at
medium temperature.
Fixed medium Fixed medium temper-
temperature ature value used for
compensation.
Fixed process Fixed process pressure
pressure value used for com-
pensation.
Fixed process Fixed process viscosity
viscosity value used for com-
pensation.
Fixed process Fixed process density
density used for compensation.
A.9 Modbus holding registers tables
Default value Value range /
[units] Setting options
(units regis-
ter)
0
0: Straight run
•
1: Single elbow
•
2: Double elbow (in-
•
plane)
3: Double elbow (out-
•
of-plane)
4: Reducer
•
5: Expansion
•
0 0 - 40
Default value Value range /
[units] Setting options
(units regis-
ter)
1500.0 100.0 - 2500.0
[m/s]
(7648)
20 -273 - 400
[°C]
(7700)
700000.0 0.0 - 1E+8
[Pa]
(8015)
0.000001 0.0 - 5000.0
[m /s]
2
(7524)
1000.0 0.0 - 2000.0
[kg/m ]
3
(7600)
Modbus communication
Access
level
Read /
write
Read /
write
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
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