Siemens SITRANS FST030 - Page 202

Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
8806 Unsigned / 2 Current mode Mode of current output. 0
● 0: 4-20 mA (3.5)
3.8-20.5 (22.6)
NAMUR
● 1: 4-20 mA (3.75)
4.0-20.8 (22.6) US
● 2: 4-20 mA (2.0)
4.0-20.5 (22.0)
● 3: 4-20 mA (2.0)
4.0-24.0 (25.0)
● 4: 0-20 mA (0.0)
0.0-20.5 (22.0)
● 5: 0-20 mA (0.0)
0.0-24.0 (25.0)
Read /
write
8866 Float / 4 Upper range
value volume
flow
Upper volume flow val‐
ue that is mapped to
the upper nominal
range boundary selec‐
ted by Current mode
(8806). Applicable if
Process value (8802) =
1.
0.004 • max.
volume flow
[m
3
/s]
(7500)
- Read /
write
8868 Float / 4 Lower range
value volume
flow
Lower volume flow val‐
ue that is mapped to
the lower nominal
range boundary selec‐
ted by Current mode
(8806). Applicable if
Process value (8802) =
1.
0
[m
3
/s]
(7500)
- Read /
write
8810 Float / 4 Upper range
value mass flow
Upper mass flow value
that is mapped to the
upper nominal range
boundary selected by
Current mode (8806).
Applicable if Process
value (8802) = 0.
0.2 • max.
mass flow
[kg/s]
(7400)
- Read /
write
8812 Float / 4 Lower range
value mass flow
Lower mass flow value
that is mapped to the
lower nominal range
boundary selected by
Current mode (8806).
Applicable if Process
value (8802) = 0.
0.0
[kg/s]
(7400)
- Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
202 Operating Instructions, 08/2018, A5E37367739-AD