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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
337
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[unit]
(unit register)
Value range /
Setting options
Access
level
753
Float / 4
LiquIdent
LiquIdent value in
lookup table.
Set to 100.0 to termi-
nate lookup table (if
less, maximum entries
are desired)
1500.0
[m/s]
0.0 - 2500.0
Read /
write
755
Unsigned / 2
Liquid identifier Liquid identifier value
in lookup table.
-
Read /
write
756
Float / 4
Base density
Base density value in
lookup table.
1000.0
[kg/m
3
]
(7600)
0.080 - 10000
Read /
write
758
Float / 4
Reference
viscosity 1
Reference viscosity 1
value in lookup table.
0.000001
[m
2
/s]
(7524)
0.00000001 - 10.0
Read /
write
760
Float / 4
Reference
viscosity 2
Reference viscosity 2
value in lookup table.
0.000001
[m
2
/s]
(7524)
0.00000001 - 10.0
Read /
write
762
Float / 4
Liquident coef-
ficient K0
LiquIdent coefficient K0
value in lookup table.
0.0
0.0 - 2000.0
Read /
write
764
Float / 4
Liquident coef-
ficient K1
LiquIdent coefficient K1
value in lookup table.
0.0
0.0 - 1.0
Read /
write
766
Float / 4
Liquident coef-
ficient K2
LiquIdent coefficient K2
value in lookup table.
0.0
-1.0 - 0.0
Read /
write
768
Float / 4
Reference
temperature 1
Reference temperature
1 for all reference vis-
cosity 1 values in
lookup table.
0.0
[°C]
(7700)
-50.0 - +250.0
Read /
write
770
Float / 4
Reference
temperature 2
Reference temperature
2 for all reference vis-
cosity 2 values in
lookup table.
40.0
[°C]
(7700)
-50.0 - +250.0
Read /
write