Siemens SITRANS F series Operating Instructions Manual page 175
Ultrasonic flowmeters
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Multipoint calibration
Table A- 28
Multipoint calibration
Modbus
Data type /
register
Size in bytes
1051
Unsigned / 2
1052
Unsigned / 2
1053
Unsigned / 2
1066
Float / 4
1068
Float / 4
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter
Description
Protect calibra-
Specifies protection of
tion table
the multipoint calibra-
tion table
Enable mul-
Enable or disable the
tipoint calibra-
Multipoint calibration.
tion
Asymmetric
Usage of the calibra-
calibration table
tion table.
Calibration
Calibration point that is
point
to be transferred to the
multipoint calibration
table.
Calibration
Calibration correction
value
factor that is to be
transferred to the mul-
tipoint calibration table.
E. g. 0.99 = -1% cor-
rection.
A.9 Modbus holding registers tables
Default value
Value range /
[units]
Setting options
(units regis-
ter)
0
0 :No protection of
•
the calibration table.
End users can use
Calibration table
command (1064) to
change the multipoint
calibration table.
1: Calibration table is
•
protected. Calibration
table command
(1064) will not grant
access to modify the
multipoint calibration
table.
0
0: Disabled
•
1: Enabled
•
0
0: Unidirectional. All
•
20 calibration points
are used for positive
flow calibration and
are then mirrored for
negative flow.
1: Bidirectional. The
•
first 10 calibration
points are used for
positive flow calibra-
tion and the 10 last
calibration points are
used for negative
flow calibration.
0.0
0.0 - 100000.0
[m
/s]
3
(7500)
1.0
0.5 - 2.0
Modbus communication
Access
level
Read /
write
(Expert)
Read /
write
Read /
write
(Expert)
Read /
write
Read /
write
173
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