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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
185
Density settings
Table A- 35 Density settings
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
7601
Float / 4
Upper alarm
limit
Exceeding this limit
causes an alarm.
max. density
[kg/m
3
]
(7600)
0 - max. density
Read /
write
7603
Float / 4
Upper warning
limit
Exceeding this limit
causes a warning.
max. density
[kg/m
3
]
(7600)
0 - max. density
Read /
write
7605
Float / 4
Lower warning
limit
Falling below this limit
causes a warning.
1.0
[kg/m
3
]
(7600)
0 - max. density
Read /
write
7607
Float / 4
Lower alarm
limit
Falling below this limit
causes an alarm.
1.0
[kg/m
3
]
(7600)
0 - max. density
Read /
write
7612
Float / 4
Hysteresis
Hysteresis that affects
the alarm and warning
limits.
.0
[kg/m
3
]
(7600)
0 - max. density
Read /
write
Standard density settings
Table A- 36 Standard density 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
11510
Float / 4
Upper alarm
limit
Exceeding this limit
causes an alarm.
max. density
[kg/m
3
]
(7600)
0 - max. density
Read /
write
11512
Float / 4
Upper warning
limit
Exceeding this limit
causes a warning.
max. density
[kg/m
3
]
(7600)
0 - max. density
Read /
write
11514
Float / 4
Lower warning
limit
Falling below this limit
causes a warning.
1.0
[kg/m
3
]
(7600)
0 - max. density
Read /
write
11516
Float / 4
Lower alarm
limit
Falling below this limit
causes an alarm.
1.0
[kg/m
3
]
(7600)
0 - max. density
Read /
write
11518
Float / 4
Hysteresis
Hysteresis that affects
the alarm and warning
limits.
.0
[kg/m
3
]
(7600)
0 - max. density
Read /
write