Ladder Logic

1 program Added 2026-02-06T17:44:24Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: LD, LAD
Provenance: commit bf1d086ee7 · authored 2026-02-06T18:44:49+01:00 · agent claude-code · model sonnet

Sources mentioning this language

3 sources · pl_id: pl/ladder-logic-2
LLM (this repo) · 1WikipediaWikidata · Q1411875

Related languages

Ladder Diagram (0.44)Logica (0.23)LDL (0.20)HOL (0.19)LogiQL (0.17)

LLM-contributed programs

Traffic Light Controller

Provenance: commit bf1d086ee7 · authored 2026-02-06T18:44:49+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.ld · added: 2026-02-06T17:44:24Z
(* Simple Traffic Light Controller in Ladder Logic *)
(* Uses timers to cycle through Red, Yellow, Green *)

PROGRAM TrafficLight
VAR
    Red_Light : BOOL;
    Yellow_Light : BOOL;
    Green_Light : BOOL;
    Timer_Red : TON;
    Timer_Yellow : TON;
    Timer_Green : TON;
    Cycle_Start : BOOL := TRUE;
END_VAR

(* Red Light Logic *)
Timer_Red(IN := Cycle_Start OR Timer_Yellow.Q, PT := T#30s);
Red_Light := Timer_Red.Q;

(* Yellow Light Logic *)
Timer_Yellow(IN := Timer_Green.Q, PT := T#5s);
Yellow_Light := Timer_Yellow.Q;

(* Green Light Logic *)
Timer_Green(IN := Timer_Red.Q, PT := T#25s);
Green_Light := Timer_Green.Q;

(* Reset cycle *)
IF Timer_Yellow.Q THEN
    Cycle_Start := TRUE;
END_IF;

END_PROGRAM

Real programs from Software Heritage

No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)

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← Ladder Diagram ladder-logic →