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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
333
A.9.11.2
Parameter change log
Table A- 137 Parameter change log
Modbus
register
Data type /
Size in bytes
Parameter
Description
Default value
[unit]
(unit register)
Value range /
Setting options
Access
level
6650
Unsigned / 2 Newest entry
number
Entry number of new-
est entry. Older entries
have a smaller entry
number.
(Wrap around for 0 -
100).
-
-
Read
only
6651
Unsigned / 2 Available en-
tries
Current number of
available parameter
change log entries.
-
-
Read
only
6652
Unsigned / 2 Clear parame-
ter change log
Command to clear the
parameter change log.
-
•
0: Cancel
•
1: Clear log
Write
only
6750
Unsigned / 2 Entry number
Selection of the entry
number.
-
0 - 100
Read /
write
6751
String / 16
Time stamp
Time stamp of the
parameter change log
entry specified by Entry
number.
Format is YYYY-MM-
DD hh-mm.
-
-
Read
only
10832
String / 32
Time stamp
Time stamp of the
parameter change log
entry specified by Entry
number.
Format is YYYY-MM-
DD hh-mm-ss.
-
-
Read
only
6759
Unsigned / 2 Modbus register Modbus register speci-
fied by Entry number.
-
-
Read
only
6760
Unsigned / 2 Data type
Data type of Modbus
register specified by
Entry number.
-
•
0: No entry
•
1: Unsigned8
•
2: Unsigned16
•
3: Unsigned32
•
4: Float32
•
5: String
Read
only
6761
Unsigned / 2 Old value un-
signed8
Parameter value of
type unsigned8 before
modification.
-
-
Read
only
6762
Unsigned / 2 Old value un-
signed16
Parameter value of
type unsigned16 be-
fore modification.
-
-
Read
only
6763
Unsigned / 4 Old value un-
signed32
Parameter value of
type unsigned32 be-
fore modification.
-
-
Read
only