Siemens SITRANS FC410, Operating Instructions Manual, Page: 127 / 160

Modbus holding registers
A.3 Modbus holding registers tables
FC410 with Modbus
Operating Instructions, 02/2016, A5E33120874-AC
125
Table A- 4 Massflow
Modbus
address
Data type /
Size [bytes]
Parameter Description Default value
[unit]
Value range Access
level
2125 Float / 4 Low Massflow Cut-
Off
Set massflow limit for low
flow cut-off.
Below this limit massflow
output is forced to zero.
If Low Flow Cut-Off is set to
0, the cut-off functionality is
disabled.
Notice:
It is recommended to set a
lower value for gas applica-
tions.
Sensor size
specific [kg/s]
1)
0 to 1023 Read /
Write
2426 Float / 4 Massflow Correction
Factor
Specify correction factor for
use in the massflow calcula-
tion
1 -1.999 to
+1.999
Read /
Write
1)
: See Sensor dimension dependent default settings (Page 139)
Table A- 5 Volume flow
Modbus
address
Data type /
Size [bytes]
Parameter Description Default value
[unit]
Value range Access
level
2170 Float / 4 Low Volumeflow
Cut Off
Define the numerical volume-
flow value below which the
volume flow output is forced
to zero.
Sensor size
specific [m 3 /s]
1)
0 to 0.177 Read /
Write
1)
: See Sensor dimension dependent default settings (Page 139)
Table A- 6 Density
Modbus
address
Data type /
Size [bytes]
Parameter Description Default value
[unit]
Value range Access
level
2127 Float / 4 Empty Tube Limit Define threshold value of
empty tube
500 [kg/m
3
] -14 000 to
+14 000
Read /
Write
2129 Unsigned /
2
Empty Tube
Detection
Set automatic detection of
Empty Tube On/Off
0 = off (Empty tube is off).
1 = on (a density value
below Empty Tube Limit
triggers an alarm. All flow
rate values are forced to
zero %).
0 0 to 1
Read /
Write