
Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
135
Table A- 10 Additional process values for gas applications
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
3010
Float / 4
Standard vol-
ume flow
Measured standard
volume flow rate
-
[Sm³/h]
(7964)
-
Read
only
3070
Float / 4
Standardizing
factor
Measured standardiz-
ing factor
-
-
Read
only
3056
Float / 4
Base density
Measured base density -
[kg/m
3
]
(7600)
-
Read
only
Table A- 11 IO values
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8803
Float / 4
Loop current
CH2
Calculated current at
output channel 2
-
[mA]
Read
only
8900
Float / 4
Output frequen-
cy CH2
Calculated frequency
at output channel 2
-
[Hz]
Read
only
8969
Float / 4
Amount on CH2 Current totalized
amount according to
pulse output channel 2
-
(Mass: 7400 /
Volume: 7500
/ Standard
Volume:
7964)
Read
only
8840
Unsigned / 2 Status output
CH2
Calculated status at
output channel 2
-
0 - 1
Read
only
9103
Float / 4
Loop current
CH3
Calculated current at
output channel 3
-
[mA]
Read
only
9200
Float / 4
Output frequen-
cy CH3
Calculated frequency
at output channel 3
-
[Hz]
Read
only
9269
Float / 4
Amount on CH3 Current totalized
amount according to
pulse output channel 3
-
(Mass: 7400 /
Volume: 7500
/ Standard
Volume:
7964)
Read
only
9140
Unsigned / 2 Status output
CH3
Calculated status at
output channel 3
-
0 - 1
Read
only
10503
Float / 4
Input current
CH3
Measured current at
input channel 3
-
[mA]
Read
only