Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
224
Operating Instructions, 08/2017, A5E37367739-AC
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9186
Float / 4
Offset adjust-
ment
Command to trim the
lower range value of
the loop current.
Simulate a loop current
of 4.0 mA, measure the
current with an ampere
meter and write the
measured value to this
register.
-
0 - 25
Write
only
9188
Float / 4
Gain adjust-
ment
Command to trim the
upper range value of
the loop current.
Simulate a loop current
of 20.0 mA, measure
the current with an
ampere meter and
write the measured
value to this register.
-
0 - 25
Write
only