Siemens SITRANS F series Operating Instructions Manual page 176

Modbus communication
A.9 Modbus holding registers tables
Modbus Data type /
register Size in bytes
1064 Unsigned / 2
174
Parameter Description
Calibration The register "Multipoint
table command calibration status" is
updated after each
command has been
handled.
Command 21 will al-
ways be accepted.
Remaining commands
will only be accepted if
register "Calibration
table protection" is 0.
Default value Value range /
[units] Setting options
(units regis-
ter)
-
1..20: Transfer cali-
•
bration data specified
in registers "Calibra-
tion point" and "Cali-
bration value" to
according entry of the
multipoint calibration
table.
21: Perform sanity
•
check of the calibra-
tion table (calibration
point values must be
in nominal ascending
order).
22: Reset calibration
•
table to default val-
ues (all "Calibration
point X" values set to
0.0 and all "Calibra-
tion value X" values
set to 1.0).
23: Set register
•
"Asymmetric calibra-
tion table" to 0 to in-
dicate that the
calibration table is
used as a uni-
directional table.
24: Set register
•
"Asymmetric calibra-
tion table" to 1 to in-
dicate that the
calibration table is
used as a bi-
directional table.
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Access
level
Read /
write