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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
196
Operating Instructions, 08/2017, A5E37367739-AC
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8508
Float / 4
Mass upper
warning limit
Exceeding this limit
causes a warning
when mass flow is
selected as input.
Max. floating
point value
[kg]
(8520)
Read /
write
8510
Float / 4
Mass lower
warning limit
Falling below this limit
causes a warning
when mass flow is
selected as input.
Min. floating
point value
[kg]
(8520)
Read /
write
8512
Float / 4
Mass lower
alarm limit
Falling below this limit
causes an alarm when
mass flow is selected
as input.
Min. floating
point value
[kg]
(8520)
Read /
write
8514
Float / 4
Mass alarm
hysteresis
Hysteresis that affects
the alarm and warning
limits when mass flow
is selected as input.
0.0
[kg]
(8520)
-
Read /
write
8533
Float / 4
Standard vol-
ume upper
alarm limit
Exceeding this limit
causes an alarm when
volume flow is selected
as input.
Max. floating
point value
[Sl]
(8522)
Read /
write
8535
Float / 4
Standard vol-
ume upper
warning limit
Exceeding this limit
causes a warning
when volume flow is
selected as input.
Max. floating
point value
[Sl]
(8522)
Read /
write
8537
Float / 4
Standard vol-
ume lower
warning limit
Falling below this limit
causes a warning
when volume flow is
selected as input.
Min. floating
point value
[Sl]
(8522)
Read /
write
8539
Float / 4
Standard vol-
ume lower
alarm limit
Falling below this limit
causes an alarm when
volume flow is selected
as input.
Min. floating
point value
[Sl]
(8522)
Read /
write
8541
Float / 4
Standard vol-
ume alarm
hysteresis
Hysteresis that affects
the alarm and warning
limits when volume
flow is selected as
input.
0.0
[Sl]
(8522)
-
Read /
write