Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 229 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
227
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9210 Unsigned / 2 Flow direction Flow direction filter
applicable for Process
values (9204) = 0, 1,
19 and 27.
0
• 0: Positive direction
•
1: Negative direction
• 2: Positive and nega-
tive directions
•
3: Positive and nega-
tive directions (sym-
metric mode)
Read /
write
9235 Float / 4 Frequency
value high
Upper frequency value.
Upper nominal output
range boundary.
10000.0
[Hz]
0.0 - 12500.0 Read /
write
9237 Float / 4 Frequency
value low
Lower frequency value.
Lower nominal output
range boundary.
0.0 Hz 0.0 - 12500.0 Read /
write
9215 Float / 4 Upper range
value volume
flow
Upper volume flow
value that is mapped to
the upper nominal
range boundary se-
lected by Frequency
value high (9235).
Applicable if Process
value (9204) = 1.
0.4 % • max.
volume flow
[m
3
/s]
(7500)
- Read /
write
9217 Float / 4 Lower range
value volume
flow
Lower volume flow
value that is mapped to
the lower nominal
range boundary se-
lected by Frequency
value low (9237). Ap-
plicable if Process
value (9204) = 1.
0.0
[m
3
/s]
(7500)
- Read /
write
9211 Float / 4 Upper range
value mass flow
Upper mass flow value
that is mapped to the
upper nominal range
boundary selected by
Frequency value high
(9235). Applicable if
Process value (9204) =
0.
0.2 • max.
mass flow
[kg/s]
(7400)
- Read /
write
9213 Float / 4 Lower range
value mass flow
Lower mass flow value
that is mapped to the
lower nominal range
boundary selected by
Frequency value low
(9237). Applicable if
Process value (9204) =
0.
0.0
[kg/s]
(7400)
- Read /
write