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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
188
Operating Instructions, 08/2017, A5E37367739-AC
Medium temperature settings
Table A- 40 Medium temperature settings
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
7701
Float / 4
Upper alarm
limit
Exceeding this limit
causes an alarm.
max. medium
temperature
[°C]
(7700)
min. medium temperature -
max. medium temperature
Read /
write
7703
Float / 4
Upper warning
limit
Exceeding this limit
causes a warning.
max. medium
temperature
[°C]
(7700)
min. medium temperature -
max. medium temperature
Read /
write
7705
Float / 4
Lower warning
limit
Falling below this
limit causes a
warning.
min. medium
temperature
[°C]
(7700)
min. medium temperature -
max. medium temperature
Read /
write
7707
Float / 4
Lower alarm
limit
Falling below this
limit causes an
alarm.
min. medium
temperature
[°C]
(7700)
min. medium temperature -
max. medium temperature
Read /
write
7712
Float / 4
Hysteresis
Hysteresis that
affects the alarm
and warning limits.
0.0
[K]
0.0 - 200.0
Read /
write
API gravity settings
Table A- 41 API gravity settings (only hydrocarbon applications)
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
11520
Float / 4
Upper alarm
limit
Exceeding this limit
causes an alarm.
Max. floating
point value
[°API]
-
Read /
write
11522
Float / 4
Upper warning
limit
Exceeding this limit
causes a warning.
Max. floating
point value
[°API]
-
Read /
write
11524
Float / 4
Lower warning
limit
Falling below this limit
causes a warning.
Min. floating
point value
[°API]
-
Read /
write