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plcSim
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plc-api · plcsim-api.fly.dev
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plcSim

Welcome back. Get started with an example project or continue with your own logic.

YOUR PROJECTS
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START
✎
New program
An empty editor. Type Neutral Text or Structured Text and the ladder renders as you go.
↧
Import your logic
Bring a Rockwell .L5X export or Neutral Text — or just drop the files anywhere on this screen.
⧉
Paste logic
⌘V / Ctrl+V anywhere on this screen — Neutral Text, Structured Text, or a whole L5X from the clipboard.
EXAMPLESEach one runs on its own — open it and press Run.
Motor start/stopLadder (NT)
A latching start/stop station. Click Start once and the seal-in branch holds the motor on through its own contact until Stop breaks the rung.
StartStopMotor
Conveyor with dwellLadder (NT)
The belt runs, a 5-second timer proves it is up to speed, and only then does the ready lamp light. Watch the accumulator climb.
RunRequestDwellTimer.ACCReadyLamp
Tank level alarmsStructured Text
Hysteresis in Structured Text: alarms latch at one level and clear at another.
LevelHighAlarmFillValve
Traffic light sequencerStructured Text
Three chained timers cycle forever with no input — press Run and watch it go.
GreenAmberRed
Pump station (Rockwell L5X)L5X import
A Studio 5000 program export: lead/lag pumps, program-scope tags, a JSR'd alarm routine.
TankLevelLeadPumpLagPump
0 routines · 0 rungs
Ladder (RLL)
IEC 61131-3