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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
273
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[unit]
(unit register)
Value range /
Setting options
Access
level
9075
Unsigned / 2 4
th
value
Selection of the fourth
value. Depending on
the number of values.
1
Read /
write
9076
Unsigned / 2 5
th
value
Selection of the fifth
value. Depending on
the number of values.
11
Read /
write
9077
Unsigned / 2 6
th
value
Selection of the sixth
value. Depending on
the number of values.
12
Read /
write
8050
Unsigned / 2 Trend scale
mode
Scaling mode for the
graph and totalizer
view.
0
•
0: Automatic scaling.
•
1: Fixed scaling de-
fined by Trend scale
lower limit (8052) and
Trend scale upper
limit (8054).
Read /
write
8051
Unsigned / 2 Trend log time
window
Scaling of the time
axis. Effective when
Trend scale mode
(8050) is set to 1.
1
•
0: 1 min
•
1: 5 min
•
2: 15 min
•
3: 30 min
•
4: 1 h
•
5: 2 h
•
6: 3 h
Read /
write
8052
Float / 4
Trend scale
lower limit
Scaling of the y-axis.
Lower limit. Effective
when Trend scale
mode (8050) is set to
1.
0.0
-
Read /
write
8054
Float / 4
Trend scale
upper limit
Scaling of the y-axis.
Upper limit. Effective
when Trend scale
mode (8050) is set to
1.
0.0
-
Read /
write