FUNCTION_BLOCK E_CTD
An instance of this Function Block type implements an event-driven down-counter.
Test Procedure
  1. Open and run events/E_CTD in the FBDK.
  2. Enter data for the PV input variable.
  3. Use LD to load PV to CV.
  4. Use CD to count down.
Last updated: 2016-04-18.
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