Siemens SITRANS F series Operating Instructions Manual page 167

Modbus Data type /
register Size in bytes
1421 Float / 4
1423 Float / 4
1425 Unsigned / 2
1442 Unsigned / 2
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description
Clamp-on rec- Recommended ideal
ommended spacing distance (LTN)
spacing ideal between clamp-on
sensors for path X.
Calculated on request.
Recommended Recommended spac-
spacing ing distance (LTN
corresponding to rec-
ommended spacing
index) between clamp-
on sensors for path X.
Calculated on request.
Recommended Recommended spac-
spacing (index) ing index between
clamp-on sensors for
path X for the given
spacing method. Cal-
culated on request.
Calculate spac- Command to calculate
ing recommended spacing
distance, recommend-
ed spacing method and
recommended spacing
index for a given path.
A.9 Modbus holding registers tables
Default value Value range /
[units] Setting options
(units regis-
ter)
0.0 -
[m]
(8556)
0.0 -
[m]
(8556)
0 0 to 255
0
0: Calculation done /
•
not running
1: Perform calcula-
•
tion on path 1
2: Perform calcula-
•
tion on path 2
3:.Perform calcula-
•
tion on Path 3
4: Perform calcula-
•
tion on path 4
5: Perform calcula-
•
tion on path 5
Modbus communication
Access
level
Read
only
Read
only
Read
only
Read /
write
165