Siemens SITRANS FST030 - Process Values; A.9.1 Process Values

Note
In case of error message "Check if the device is set to CT or SIL Operation mode", please check
for the following root causes:
- The device is set to CT mode
- The device is set to SIL mode
- The used Modbus register address is wrong
A.9.1 Process values
Table A-8 Process values for standard applications
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
3000 Float / 4 Volume flow Measured volume flow -
[m³/s]
(7500)
- Read
only
3004 Float / 4 Mass flow Measured mass flow -
[kg/s]
(7400)
- Read
only
3008 Float / 4 Flow velocity Measured liquid flow
velocity
0.0
[m/s]
(8014)
- Read
only
3006 Float / 4 Sound velocity Measured fluid sound
speed
1500.0
[m/s]
(7648)
- Read
only
3040 Float / 4 Density Liquid density 0.0
[kg/m
3
]
(7600)
- Read
only
3044 Float / 4 Pressure Process pressure -
[Pa]
(7548)
- Read
only
3046 Float / 4 Kinematic vis‐
cosity
Liquid viscosity -
[m
2
/s]
(7524)
- Read
only
3042 Float / 4 Medium temper‐
ature
Measured medium tem‐
perature
-
[°C]
(7700)
- Read
only
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 141