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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
237
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
9135
Unsigned / 2 Polarity
Logical polarity of dis-
crete input signal.
0
•
0: Active high level
•
1: Active low level
Read /
write
9139
Unsigned / 2 Debounce time Debounce time to filter
the input signal.
0
•
0: 0 ms
•
1: 0.5 ms
•
2: 1 ms
•
3: 1.5 ms
•
4: 2 ms
•
5: 2.5 ms
•
6: 3 ms
•
7: 3.5 ms
•
8: 4 ms
•
9: 4.5 ms
•
10: 5 ms
•
11: 5.5 ms
•
12: 6 ms
•
13: 6.5 ms
•
14: 7 ms
•
15: 7.5 ms
Read /
write