Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
8403 Unsigned / 2 Totalizer 2 set Run, reset, or preset to‐
talizer 2.
Possible selections:
0
● 0: Totalize
● 1: Reset
● 2: Preset to Totalizer
1 preset value
Read /
write
8404 Unsigned / 2 Totalizer 2 di‐
rection
Totalizer 2 direction. 1
● 0: Balanced
● 1: Positive
● 2: Negative
● 3: Hold
Read /
write
8416 Float / 4 Totalizer 2 pre‐
set value
Preset value which will
be used when Totalizer
2 set is set to 2
-
(8321 / 8320 /
8322)
- Read /
write
8419 Unsigned / 2 Totalizer 2 tar‐
get mode
Sets the desired mode
for the totalizer.
8
● 8. Auto, the totalizer
algorithm running
● 16: Man, the totalizer
algorithm is stopped.
The totalizer value
can be written
Read /
write
8500 Float / 4 Totalizer 3 value Totalized value of total‐
izer 3. Units depends
on the selected proc‐
ess value the totalizer
is configured to.
Write access if Totaliz‐
er 3 target mode is set
to 16: Manual
-
(8321 / 8320 /
8322)
- Read /
write
8503 Unsigned / 2 Totalizer 3 set Run, reset, or preset to‐
talizer 3.
0
● 0: Totalize
● 1: Reset
● 2: Preset to Totalizer
1 preset value
Read /
write
8504 Unsigned / 2 Totalizer 3 di‐
rection
Totalizer 3 direction. 1
● 0: Balanced
● 1: Positive
● 2: Negative
● 3: Hold
Read /
write
8516 Float / 4 Totalizer 3 pre‐
set value
Preset value which will
be used when Totalizer
3 set is set to 2
-
(8321 / 8320 /
8322)
- Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 145
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