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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
239
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
10533
Float / 4
Lower range
value tempera-
ture
Lower medium tem-
perature value that is
mapped to the lower
nominal range bounda-
ry selected by Current
mode (10522). Appli-
cable if Process value
(10523) = 1.
Min. medium
temperature
[°C]
(7700)
-
Read /
write
10537
Float / 4
Upper range
value density
Upper process density
value that is mapped to
the upper nominal
range boundary se-
lected by Current mode
(10522). Applicable if
Process value (10523)
= 2.
Max. density
[kg/m
3
]
(7600)
-
Read /
write
10539
Float / 4
Lower range
value density
Lower process density
value that is mapped to
the lower nominal
range boundary se-
lected by Current mode
(10522). Applicable if
Process value (10523)
= 2.
0.08
[kg/m
3
]
(7600)
-
Read /
write
10543
Float / 4
Upper range
value viscosity
Upper process viscosi-
ty value that is mapped
to the upper nominal
range boundary se-
lected by Current mode
(10522). Applicable if
Process value (10523)
= 3.
1.0
[m²/s]
(7524)
-
Read /
write
10545
Float / 4
Lower range
value viscosity
Lower process viscosi-
ty value that is mapped
to the lower nominal
range boundary se-
lected by Current mode
(10522). Applicable if
Process value (10523)
= 3.
0.0
[m²/s]
(7524)
-
Read /
write
10524
Unsigned / 2 Fail-safe behav-
ior
Reaction in case of a
fault at the current
input.
0
•
0: Last valid value
•
1: Custom value
Read /
write
10529
Float / 4
Fail-safe value
pressure
Input value in case of a
fault and when Fail-
safe behavior (10524)
configured to 1. Appli-
cable if Process value
(10523) = 0.
0.0
[Pa]
(7548)
-
Read /
write