Siemens SITRANS FST030 - Setup; Sensor

A.9.4 Setup
A.9.4.1 Sensor
Sensor settings
Table A-14 General sensor settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
1801 Unsigned / 2 Flow direction Define positive and
negative flow direction.
Default positive flow di‐
rection is indicated by
an arrow on the sensor.
1
● 0: Negative: The flow
is measured '+' in
default negative
direction and '-' in
default positive
direction.
● 1: Positive: The flow
is measured '+' in
default positive
direction and '-' in
default negative
direction.
Read /
write
Pipe settings (clamp-on)
Table A-15 Pipe settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
1200 Float / 4 Outer pipe di‐
ameter
External pipe diameter. 0.1
[m]
(8556)
0.006 - 10.0 Read /
write
1202 Float / 4 Wall thickness Pipe wall thickness. 0.001
[m]
(8556)
1.0E-6 - 0.5 Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
160 Operating Instructions, 08/2018, A5E37367739-AD