Siemens CPU 31 Series - Page 148

Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
CPU 31xC and CPU 31x, Technical Data
6-36 Manual, 01/2006 Edition, A5E00105475-06
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Figure 6-4 Principle of interference suppression with STEP 7
In the two graphics below we illustrate how the 50 Hz and 60 Hz interference suppression
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Figure 6-5 50 Hz interference suppression