Siemens SENTRON PAC3200T Product Manual page 120

Appendix
A.1 Modbus TCP
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
FLAG_TARIFF_T2
FLAG_TARIFF_UNKNOWN
FLAG_QUALITY_UNSECURE
FLAG_QUALITY_AUXPOWER_FAIL
FLAG_QUALITY_PERIOD_TO_SHORT
FLAG_QUALITY_TIME_UNSECURE
FLAG_MULTIPLE_TIMECHANGE
FLAG_CURRENT_TRANSFORMER
FLAG_LOGENTRY
FLAG_LOGBOOK_FULL
FLAG_Q1
FLAG_BAD_QUALITY_MARKER
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
MBAP Header Function code 0x64
0x0000 0x0000 0x64
0x0009 0x01
118
1 byte
Data log identifier
(Tagesprofilspeicher)
0x04
0x00xxxxxx
0x01xxxxxx
0xFFxxxxxx
0x00800000
0x00400000
0x00010000
0x00200000
0x00040000
0x00080000
0x00001000
0x00002000
0x00000040
0x00000001
1 byte
Data identifier (all
channels energy)
0x6D
Equipment Manual, 09/2022, L1V30415168B-03
1 byte 5 bytes
Advanced data
identifiers (4 byte OID
and 1 byte number of
records.)
0x00002CE2 0x02