Siemens SENTRON PAC4220 - A.1.7 Odd Harmonics without Time Stamp

O󹪜set Number
of regis‐
t
ers
Name Format Unit Value range Access
2897 2 Total of active energy - import (MID reg‐
ist
er)
Float Wh over󹪞ow 1.0e+12 R
2899 2 Total of active energy - export (MID reg‐
ist
er)
Float Wh over󹪞ow 1.0e+12 R
Table A-7 Meaning of the abbreviations in the "Access" column
Abbreviation Meaning
R Read access
RW Read and write access
A.1.7 Odd harmonics without a time stamp with the function codes 0x03 and
0x04
For clar
ity, only the fundamental and the 3rdharmonic are listed in the tables.
Formula
The o󹪜sets of the 5thto 63rdodd harmonics can be calculated using the formula below:
###Formula representation still to be optimized by Alex Fischer, will be completed at a later
time###
2IIVHWRIQWKKDUPRQLF RIIVHWRIIXQGDPHQWDOOHQJW
Kb[Q෥
nth - stands for the number of the harmonic
Example 1
Calculation of "5th harmonic voltage L1-N":
• 9001 + (2 + 1) x (5 − 1) = 9013
• O󹪜set of "5th harmonic voltage L1-N" is 9013.
Example 2
Calculation of o󹪜set of "31st harmonic voltage L3-N":
• 9005 + (2 +1) x (31 − 1) = 9095
• O󹪜set of "3rd harmonic voltage L3-N" is 9095.
Appendix
A.1Modbus
PAC4220
122 Equipment Manual, L1V30827278B-01