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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
312
Operating Instructions, 08/2017, A5E37367739-AC
Channel 3
Table A- 107 Channel 3
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[unit]
(unit register)
Value range /
Setting options
Access
level
9103
Float / 4
Current output
value
Output current value if
configured to current
output.
-
-
Read
only
9128
Unsigned / 2 Error status
Error status if config-
ured to current output.
-
•
Bit 0: Overflow
•
Bit 1: Underflow
•
Bit 2: Fail mode acti-
vated
•
Bit 3: Cable break
•
Bit 4: Output current
cannot be estab-
lished (read back de-
viation > 0.1 mA)
Read
only
9140
Unsigned / 2 Status output
Status value if config-
ured to status output.
-
0 - 1
Read
only
9269
Float / 4
Pulse status
output
Amount done if config-
ured to pulse output.
-
-
Read
only
9272
Unsigned / 2 Error status
Error status if config-
ured to pulse output.
-
•
Bit 0: The pulse out-
put has reached the
maximum pulse out-
put frequency
•
Bit 1: Fail mode is
activated
Read
only
9287
Unsigned / 4 Pulse counter
Pulse output since
startup.
-
-
Read
only
9200
Float / 4
Frequency
output value
Frequency value if
configured to frequen-
cy output.
-
-
Read
only
9203
Unsigned / 2 Error status
Error status if config-
ured to frequency out-
put.
-
•
Bit 0: Overflow
•
Bit 1: Underflow
•
Bit 2: Fail mode acti-
vated
Read
only
10503
Float / 4
Current input
value
Input current value if
configured to current
input.
-
-
Read
only