Siemens SITRANS FST030 - Page 201

Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
hydrocarbon and gas
applications)
● 29: Base viscosity
(only hydrocarbon
applications)
● 30: Base density
(only hydrocarbon
applications)
● 31: LiquIdent (only
hydrocarbon
applications)
● 32: API gravity (only
hydrocarbon
applications)
● 33: Base API gravity
(only hydrocarbon
applications)
● 34: Specific gravity
(only hydrocarbon
applications)
● 35: Base specific
gravity (only
hydrocarbon
applications)
● 36: Rate of change
(ROC) (only
hydrocarbon
applications)
8809 Unsigned / 2 Flow direction Flow direction filter ap‐
plicable for Process val‐
ues (8802) = 0, 1, 19
and 27.
0
● 0: Positive direction
● 1: Negative direction
● 2: Positive and
negative directions
● 3: Positive and
negative directions
(symmetric mode)
Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 201