Siemens SITRANS F Series Operating Instructions Manual page 223

Modbus Data type /
register Size in bytes
9591 Unsigned / 2
9281 Unsigned / 2
9114 Unsigned / 2
9115 Float / 4
7153 Float / 4
9186 Float / 4
9188 Float / 4
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD
Parameter Description
Filter-safe acti‐ Fail-safe activation con‐
vation condition dition.
Fail-safe min. Minimum time the out‐
time put stays in fail-safe be‐
havior.
Fail-safe behav‐ Current output reaction
ior in case of a fault.
Fail-safe value Output value in case of
a fault and when Fail-
safe behavior (9114) is
configured to 4.
Forced value Forced value when
forcing is active.
Offset adjust‐ Command to trim the
ment 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.
Gain adjustment Command to trim the
upper range value of
the loop current.
Simulate a loop current
of 20.0 mA, measure
the current with an am‐
pere meter and write
the measured value to
this register.
A.9 Modbus holding registers tables
Default value Value range /
[units] Setting options
(units register)
1 ● 0: Bad status of
selected process
value
● 1: Active
Maintenance alarm
or Failure (NAMUR)
0 0 - 100
[s]
0
● 0: Lower fault current
● 1: Upper fault current
● 2: Last valid value
● 3: Disabled
● 4: Custom value
0.0 0.0 - 25.0
[mA]
4.0 3.5 - 25.0
[mA]
- 0 - 25
- 0 - 25
Modbus communication
Access
level
Read /
write
Read /
write
Read /
write
Read /
write
Read /
write
Write on‐
ly
Write on‐
ly
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