An instance of this Function Block type implements an event-driven up/down counter.
Test Procedure
  1. Open and run events/E_CTUD in the FBDK.
  2. Enter a value for PV (Preset Value).
  3. Click CU to count up.
  4. Click CD to count down.
  5. Click R to reset.
Last updated: 2016-04-16.
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