An instance of this type provides sampling of an input variable IN whose type is specified by the xxx suffix in the FB type name. Upon the occurrence of a REQ event:
  • If the value of the OUT variable is already equal to that of the IN variable, no action is taken.
  • Otherwise, the value of OUT is copied from the value of IN, and an event is issued at the CNF output.
These FB types are found in the src/sample folder of the FBDK.
An example of this family of FB types is shown below, where xxx = REAL.
Last updated: 2011-01-31.
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Licensed under the Academic Free License version 3.0.