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EL8601-8411 | 12-Channel multi-Interface, 8 x DI, 1 x CNT, 1 x ENC AB, 4 x DO, 2 x PWM, 1 x AI, 1 x AO · 0 次阅读

Save counter value via latch extern input (Enable latch extern on pos./neg. edge)

Save counter value via a positive/negative edge at the Latch input (Enable latch extern on positive/negative edge)

The latch function enables the current counter value to be stored in separate process data, independent of the cycle time.

  • The counter value at the Latch extern input can be saved via:
    • Index 0x7000:02 "Enable latch extern on positive edge" = TRUE
      At the first external latch pulse with positive edge the current counter value is stored in index 0x6000:12 "Latch value".
    • Index 0x7000:04 "Enable latch extern on negative edge" = TRUE
      At the first external latch pulse with negative edge the current counter value is stored in index 0x6000:12 "Latch value".
    • Simultaneous activation of 0x7000:02 and 0x7000:04
      On the first external latch pulse, regardless of the polarity of the edge, the current counter value is saved in index 0x6000:12 "Latch value".
  • Saving of the counter value in index 0x6000:12 "Latch value" is confirmed via the "Latch extern valid" bit (index 0x6000:02).
  • The status of the Latch extern input can be monitored via index 0x6002:14 "Status of extern latch".