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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
238
Operating Instructions, 08/2017, A5E37367739-AC
Channel 3 analog input settings
Table A- 59 Channel 3 analog input settings
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
10522
Unsigned / 2 Current mode
Mode of current output. 0
•
0: 4-20 mA (3.5) 3.8-
20.5 (22.6) NAMUR
•
1: 4-20 mA (3.75)
4.0-20.8 (22.6) US
•
2: 4-20 mA (2.0) 4.0-
20.5 (22.0)
•
3: 4-20 mA (2.0) 4.0-
24.0 (25.0)
•
4: 0-20 mA (0.0) 0.0-
20.5 (22.0)
•
5: 0-20 mA (0.0) 0.0-
24.0 (25.0)
Read /
write
10523
Unsigned / 2 Process value
Assignment of the
current input value to a
process value.
0
•
0: Pressure
•
1: Temperature
•
2: Density
•
3: Viscosity
Read /
write
10525
Float / 4
Upper range
value pressure
Upper process pres-
sure value that is
mapped to the upper
nominal range bounda-
ry selected by Current
mode (10522). Appli-
cable if Process value
(10523) = 0.
100000.0
[Pa]
(7548)
-
Read /
write
10527
Float / 4
Lower range
value pressure
Lower process pres-
sure value that is
mapped to the lower
nominal range bounda-
ry selected by Current
mode (10522). Appli-
cable if Process value
(10523) = 0.
0.0
[Pa]
(7548)
-
Read /
write
10531
Float / 4
Upper range
value tempera-
ture
Upper medium tem-
perature value that is
mapped to the upper
nominal range bounda-
ry selected by Current
mode (10522). Appli-
cable if Process value
(10523) = 1.
Max. medium
temperature
[°C]
(7700)
-
Read /
write