Detailed Description
2.9 Zero mark selection with BERO
Reference Point Approach (R1)
2-48 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
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Fig. 2-13 Zero mark selection with BERO
Zero mark evaluation with BERO must be parameterized as the referencing mode:
MD34200 $MA_ENC_REFP_MODE = 5
Negative edge evaluation
In the case of a referencing operation with a negative edge evaluation of the BERO signal:
MD34120 $MA_REFP_BERO_LOW_ACTIVE = FALSE
synchronization is with the next encoder zero mark encountered after the BERO is exited.
Positive edge evaluation
In the case of a referencing operation with a positive edge evaluation of the BERO signal:
MD34120 $MA_REFP_BERO_LOW_ACTIVE = TRUE
synchronization is with the next encoder zero mark encountered after the BERO is
approached.
If, mechanically, the BERO is sized in such a way that the positive BERO signal covers the
entire width of the encoder zero mark, the encoder zero mark will be reliably detected in both
traversing directions.
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