Definition:
Full Variability Language (FVL) is a type of language that offers more freedom in control logic but introduces more risks related to systematic errors. Think of standard PLC programming languages.
Key Points:
- Examples include structured text or high-level languages like C.
- Require stringent verification and validation methods.
Example:
Custom algorithms written in structured text (ST) for a safety PLC application.
See also: Fixed Programming Language (FPL)
Cited Source:
- IEC 61131-3.