Odd Harmonics Without A Time Stamp With The Function Codes 0X03 And 0X04 - Siemens SENTRON PAC4220 Manual

7km power monitoring device
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Appendix
A.1 Modbus
Offset
Number
Name
of regis‐
ters
2897
2
Total of active energy - import (MID reg‐
ister)
2899
2
Total of active energy - export (MID reg‐
ister)
Table A-7
Abbreviation
R
RW
A.1.7
Odd harmonics without a time stamp with the function codes 0x03 and
0x04
For clarity, only the fundamental and the 3rd harmonic are listed in the tables.
Formula
The offsets 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###
nth - stands for the number of the harmonic
Example 1
Calculation of "5th harmonic voltage L1-N":
• 9001 + (2 + 1) x (5 − 1) = 9013
• Offset of "5th harmonic voltage L1-N" is 9013.
Example 2
Calculation of offset of "31st harmonic voltage L3-N":
• 9005 + (2 +1) x (31 − 1) = 9095
• Offset of "3rd harmonic voltage L3-N" is 9095.
122
Meaning of the abbreviations in the "Access" column
Meaning
Read access
Read and write access
Format
Unit
Float
Wh
Float
Wh
Equipment Manual, L1V30827278B-01
Value range
Access
overflow 1.0e+12
R
overflow 1.0e+12
R
PAC4220

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