Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 246 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
244
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
9309 Unsigned / 2 Flow direction Flow direction filter
applicable for Process
values (9302) = 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
9306 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
9366 Float / 4 Upper range
value volume
flow
Upper volume flow
value that is mapped to
the upper nominal
range boundary se-
lected by Current mode
(9306). Applicable if
Process value (9302) =
1.
0.4 % • max.
volume flow
[m
3
/s]
(7500)
- Read /
write
9368 Float / 4 Lower range
value volume
flow
Lower volume flow
value that is mapped to
the lower nominal
range boundary se-
lected by Current mode
(9306). Applicable if
Process value (9302) =
1.
0.0
[m
3
/s]
(7500)
- Read /
write
9310 Float / 4 Upper range
value mass flow
Upper mass flow value
that is mapped to the
upper nominal range
boundary selected by
Current mode (9306).
Applicable if Process
value (9302) = 0.
0.2 • max.
mass flow
[kg/s]
(7400)
- Read /
write