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Siemens S5-135U/155U User Manual

Page 29

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3-3

System Manual
C79000-G8576-C199-06

Depending on the propagation medium (conducted or non-conducted
interference) and distance from the source, interference can be picked up by
the programmable controller via different coupling mechanisms.

A distinction is made between the following:

S

Direct coupling

S

Capacitive coupling

S

Inductive coupling

S

Radiated interference

Installation Guidelines