Process Values; A.9.4.2 Process Values - Siemens SITRANS F series Operating Instructions Manual

Modbus communication
A.9 Modbus holding registers tables
A.9.4.2

Process values

Volume flow settings
Table A- 29 Volume flow settings
Modbus Data type /
register Size in bytes
7510 Float / 4
7501 Float / 4
7503 Float / 4
7505 Float / 4
7507 Float / 4
7512 Float / 4
Mass flow settings
Table A- 30 Mass flow settings
Modbus Data type /
register Size in bytes
7410 Float / 4
7401 Float / 4
180
Parameter Description
Low flow cut-off Volume flow limit for
low flow cut-off. Below
limit volume flow output
is forced to zero.
Upper alarm Exceeding this limit
limit causes an alarm.
Upper warning Exceeding this limit
limit causes a warning.
Lower warning Falling below this limit
limit causes a warning.
Lower alarm Falling below this limit
limit causes an alarm.
Hysteresis Hysteresis that affects
the alarm and warning
limits.
Parameter Description
Low flow cut-off Mass flow limit for low
flow cut-off. Below limit
mass flow output is
forced to zero.
Upper alarm Exceeding this limit
limit causes an alarm.
Default value Value range /
[units] Setting options
(units regis-
ter)
Sensor size 0 - max. volume flow
specific
max. volume -max. volume flow -
flow +max. volume flow
[m /s]
3
(7500)
max. volume -max. volume flow -
flow +max. volume flow
[m /s]
3
(7500)
-max. volume -max. volume flow -
flow +max. volume flow
[m /s]
3
(7500)
-max. volume -max. volume flow -
flow +max. volume flow
[m /s]
3
(7500)
0.0 0 - max. volume flow
[m /s]
3
(7500)
Default value Value range /
[units] Setting options
(units regis-
ter)
0.001 x max. 0 - max. mass flow
mass flow
[kg/s]
(7400)
max. mass -max. mass flow -
flow +max. mass flow
[kg/s]
(7400)
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Access
level
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write
Read /
write
Read /
write
Read /
write
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write
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Access
level
Read /
write
Read /
write