Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 210 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
208
Operating Instructions, 08/2017, A5E37367739-AC
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8919 Float / 4 Upper range
value density
Upper process density
value that is mapped to
the upper nominal
range boundary se-
lected by Frequency
value high (8935).
Applicable if Process
value (8904) = 2.
1600
[kg/m
3
]
(7600)
- Read /
write
8921 Float / 4 Lower range
value density
Lower process density
value that is mapped to
the lower nominal
range boundary se-
lected by Frequency
value low (8937). Ap-
plicable if Process
value (8904) = 2.
600
[kg/m 3 ]
(7600)
- Read /
write
8923 Float / 4 Upper range
value tempera-
ture
Upper medium tem-
perature value that is
mapped to the upper
nominal range bounda-
ry selected by Fre-
quency value high
(8935). Applicable if
Process value (8904) =
3.
Max. medium
temperature
[°C]
(7700)
- Read /
write
8925 Float / 4 Lower range
value tempera-
ture
Lower medium tem-
perature value that is
mapped to the lower
nominal range bounda-
ry selected by Fre-
quency value low
(8937). Applicable if
Process value (8904) =
3.
Min. medium
temperature
[°C]
(7700)
- Read /
write
8927 Float / 4 Upper range
value standard
volume flow
Upper standard volume
flow value that is
mapped to the upper
nominal range bounda-
ry selected by Fre-
quency value high
(8935). Applicable if
Process value (8904) =
27.
0.4 % • max.
standard
volume flow
[Sm
3
/h]
(7964)
- Read /
write