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 look‐
up 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 vis‐
cosity 1
Reference viscosity 1
value in lookup table.
0.000001
[m
2
/s]
(7524)
0.00000001 - 10.0 Read /
write
760 Float / 4 Reference vis‐
cosity 2
Reference viscosity 2
value in lookup table.
0.000001
[m
2
/s]
(7524)
0.00000001 - 10.0 Read /
write
762 Float / 4 Liquident coeffi‐
cient K0
LiquIdent coefficient K0
value in lookup table.
0.0 0.0 - 2000.0 Read /
write
764 Float / 4 Liquident coeffi‐
cient K1
LiquIdent coefficient K1
value in lookup table.
0.0 0.0 - 1.0 Read /
write
766 Float / 4 Liquident coeffi‐
cient K2
LiquIdent coefficient K2
value in lookup table.
0.0 -1.0 - 0.0 Read /
write
768 Float / 4 Reference tem‐
perature 1
Reference temperature
1 for all reference vis‐
cosity 1 values in look‐
up table.
0.0
[°C]
(7700)
-50.0 - +250.0 Read /
write
770 Float / 4 Reference tem‐
perature 2
Reference temperature
2 for all reference vis‐
cosity 2 values in look‐
up table.
40.0
[°C]
(7700)
-50.0 - +250.0 Read /
write
772 Float / 4 Reference tem‐
perature 3
Reference temperature
for all API MPMS 11.1
density and K0, K1, K2
coefficients in oil look‐
up table.
15.55556
[°C]
(7700)
15.55556 Read
only
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
334 Operating Instructions, 08/2018, A5E37367739-AD