Shared ladder program

Ladder logic: 3 rungs with rising-edge, CMP, MOV

A runnable ladder logic program with 3 rungs using rising-edge, CMP, MOV, CTD, OTE. Open it in the free browser PLC simulator to edit, run and fork it. No install, no account.

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RUNG 1PFeeder_ReloadMOV Parts_Left:= 200RUNG 2PPart_TakenCTD Feed_CountPRE 4RUNG 3Parts_Left< 20Low_Stock_Lamp
Static preview of the shared program. The live editor is below.

What's in this program

rising-edgeCMPMOVCTDOTE
  • 3 rungs
  • Uses a compare instruction

Instructions used: rising-edge (one-shot rising-edge contact), CMP (compare instruction), MOV (move value into a register), CTD (count-down counter), OTE (output energise coil).

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Want to build your own? Open the free ladder logic sandbox.