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EL515x | Incremental Encoder Interface · 0 次阅读

Activation of the external latch input (“Latch”) and latching of the counter value (index 0x7000:02, 0x7000:04)

The counter value can be saved in “Latch value” either on a positive edge or a negative edge at the external latch

  • “Enable latch extern on positive edge” (index 0x7000:02) / “Enable latch extern on negative edge” (index 0x7000:04)
    • The function is activated by setting the bit in “Enable latch extern on positive edge” (index 0x7000:02) / “Enable latch extern on negative edge” (index 0x7000:04) to TRUE.
    • The counter value in “Latch value” (index 0x6000:12) will be saved on the next positive/negative edge. The subsequent pulses have no influence on the latch value.
    • The “Latch extern valid” bit (index 0x6000:02) is set to TRUE.
    • After re-activation of “Enable latch extern on positive edge (index 0x7000:02) / “Enable latch extern on negative edge” (index 0x7000:04), a new counter value at the latch input can only be written if the values of the “Latch extern valid” bit (index 0x6000:02) and the “Latch C valid” bit (index 0x6000:01) are FALSE