Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 135 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
133
A.9 Modbus holding registers tables
In the following the Modbus RTU holding registers available for SITRANS FS430 are
described.
Note
All Write parameters require password access.
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 regis-
ter)
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]
(7684)
- 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