Siemens SITRANS FST030 - Page 182

Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
1144 Float / 4 Calibration val‐
ue 19
Calibration correction
factor that is associ‐
ated to Calibration
point 19.
1.0 0.5 - 2.0 Read /
write
(Expert)
1146 Float / 4 Calibration
point 20
Calibration point 20 for
undirectional flow or
calibration point 20 for
bidirectional positive
flow. If 0.0 the calibra‐
tion point is not used.
0.0
[m
3
/s]
(7500)
0.0 - 100000.0 Read /
write
(Expert)
1148 Float / 4 Calibration val‐
ue 20
Calibration correction
factor that is associ‐
ated to Calibration
point 20.
1.0 0.5 - 2.0 Read /
write
(Expert)
Limit monitoring (for path diagnostic alarms)
Table A-28 Limit monitoring (for path diagnostic alarms)
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
3332 Unsigned / 1 AlarmLimit
%Accepted
bursts
When any path’s %Accepted
bursts is < this value, an alarm
will be reported
50
[%]
0 - 100 Read /
write
3333 Float / 4 AlarmLimit
Correlation fac‐
tor
When any path’s correlation fac‐
tor is < this value, an alarm will
be reported
0.95 0 - 1 Read /
write
3335 Float / 4 AlarmLimit
RxGain
When any path’s RxGain is >
this value, an alarm will be re‐
ported
50.0
[dB]
0.0 – 100.0 Read /
write
3337 Float / 4 AlarmLimit
SNR
When any path’s SNR is < this
value, an alarm will be reported
20.0
[dB]
0.0 – 100.0 Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
182 Operating Instructions, 08/2018, A5E37367739-AD