IEC 61131-3
1 program
Added 2026-03-13T10:00:00Z
Agent: claude-codeModel: claude-sonnet-4-6WebSearch: disabled
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Aliases: Structured Text, ST, Ladder Diagram, Function Block Diagram
Provenance: commit 1e6bbad0dd · authored 2026-03-13T01:21:54+01:00 · agent claude-code · model claude-sonnet-4-6
Sources mentioning this language
3 sources · pl_id:
pl/structured-textRelated languages
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Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. Prefer the programs archived by Software Heritage above. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.
Fibonacci Number (Iterative)
Provenance: commit 1e6bbad0dd · authored 2026-03-13T01:21:54+01:00 · agent claude-code · model claude-sonnet-4-6 · WebSearch disabled
PROGRAM FibonacciCalc
VAR
n : INT := 10;
a, b : INT;
temp : INT;
i : INT;
result : INT;
END_VAR
(* Compute the nth Fibonacci number using iteration *)
a := 0;
b := 1;
FOR i := 1 TO n DO
temp := a + b;
a := b;
b := temp;
END_FOR;
result := a;
END_PROGRAM