Fixed Programming Language (FPL)

Definition:
Fixed Programming Languages (FPL) are predefined programming environments with limited flexibility to avoid introducing systematic faults.

Key Points:

  • Examples include ladder diagram (LD) and function block diagram (FBD).
  • Used to reduce the likelihood of introducing dangerous coding errors.

Example:
Safety-critical logic implemented in FBD to simplify validation.

See also: Full variability programming language

Cited Source:

  • IEC 61131-3.

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