Siemens Simatic S7-300 - Page 110

Basic functions
4.2 Homing
Connection of the SINAMICS S120 to the Technology CPU
110 Product Information, 09/2011, A5E00480378-04
Hardware configuration
A typical application example is an encoder without zero mark evaluation. An external zero
mark (Bero) is used in place of the encoder zero mark. To ensure short response times,
it is read indirectly via the digital inputs of the CU320.
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