Siemens SITRANS F series Operating Instructions Manual page 171

Modbus Data type /
register Size in bytes
1665 Float / 4
1659 Float / 4
User calibration
Table A- 26 User calibration
Modbus Data type /
register Size in bytes
1000 Float / 4
1006 Float / 4
1010 Float / 4
1014 Float / 4
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description
Spacing offset Spacing offset (LTN) between
clamp-on sensors for path 5.
Path weight Fixed weighting factor associ-
ated with path 5.
For clamp-on systems the in-
stalled paths weightings should
be identical but not zero.
For inline systems the sum of
the installed paths weightings
should be 1.0.
Parameter Description
Slope correc- Define positive and
tion factor negative flow direction.
Default positive flow
direction is indicated by
the arrow on the sen-
sor.
Path 1 offset User calibrated zero
offset for path 1.
Calibrated delta time =
delta time + Path 1
factory offset + Path 1
offset.
Path 2 offset User calibrated zero
offset for path 2.
Calibrated delta time =
delta time + Path 2
factory offset + Path 2
offset.
Path 3 offset User calibrated zero
offset for path 3.
Calibrated delta time =
delta time + Path 3
factory offset + Path 3
offset.
A.9 Modbus holding registers tables
Default value Value range /
[units] Setting options
(units regis-
ter)
0.0 -100.0 - 100.0
[m]
(8556)
1.0 0.01 - 2.0
Default value Value range /
[units] Setting options
(units regis-
ter)
1.0 0.5 - 2.0
0.0 -1.25E-6 - +1.25E-6
[s]
0.0 -1.25E-6 - +1.25E-6
[s]
0.0 -1.25E-6 - +1.25E-6
[s]
Modbus communication
Access
level
Read /
write
Read /
write
(Expert)
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
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