FUNCTION_BLOCK Simple

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ECC

This Function Block (FB) type provides a template for construction of Simple FB Types.

The operation of an instance of this FB type is defined by the Execution Control Chart (ECC) shown above and the algorithms shown below. 

ALGORITHM INIT IN ST :
(* Initialization Algorithm *)
QO := QI;
IF QI THEN
  STATUS := 0; //OK
  OUT := "";
ELSE 
  STATUS := 1; //INHIBITED
END_IF
END_ALGORITHM

ALGORITHM REQ IN ST :
(* Normally Executed Algorithm *)
QO := QI;
IF QI THEN
  STATUS := 0; //OK
  OUT := IN;
ELSE
  STATUS := 1; //INHIBITED
END_IF
END_ALGORITHM