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Appendix
A.1 Modbus TCP
118
Equipment Manual, 09/2022, L1V30415168B-03
Reading out the profile data memory (load profile, daily profile, monthly profile, annual
profile)
Each of the profile data memories contains 2 measuring channels:
•
Measuring channel 1: Active energy or active power import
•
Measuring channel 2: Active energy or active power export
A special feature of the load profile memory (demand period duration of 15 minutes) is that
these channels are also available as
•
Arithmetic average power demand values (W)
•
Cumulated average power demand values (W) and/or as
•
Energy portions (Wh)
Each of these values can be converted to any of the others using the demand period duration
and the real measurement duration which is also available.
Any entry in the profile data memory can be marked as a data variable ("information flag
bytes") by the device. This information helps the user to identify occurrences during the
demand periods.
Description of the "information flag bytes":
FLAG_TARIFF_T1
0x00xxxxxx
FLAG_TARIFF_T2
0x01xxxxxx
FLAG_TARIFF_UNKNOWN
0xFFxxxxxx
FLAG_QUALITY_UNSECURE
0x00800000
FLAG_QUALITY_AUXPOWER_FAIL
0x00400000
FLAG_QUALITY_PERIOD_TO_SHORT
0x00010000
FLAG_QUALITY_TIME_UNSECURE
0x00200000
FLAG_MULTIPLE_TIMECHANGE
0x00040000
FLAG_CURRENT_TRANSFORMER
0x00080000
FLAG_LOGENTRY
0x00001000
FLAG_LOGBOOK_FULL
0x00002000
FLAG_Q1
0x00000040
FLAG_BAD_QUALITY_MARKER
0x00000001
Examples
A number of Modbus frames are provided here to indicate the readout of various data logs in
the device using the function code 0x64.
Example of request frame
7 bytes
1 byte
1 byte
1 byte
5 bytes
MBAP Header
Function code 0x64
Data log identifier
(Tagesprofilspeicher)
Data identifier (all
channels energy)
Advanced data
identifiers (4 byte OID
and 1 byte number of
records.)
0x0000 0x0000
0x0009 0x01
0x64
0x04
0x6D
0x00002CE2 0x02
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