{
  "program": "Motor_Start_Stop",
  "rungs": [
    {
      "id": 1,
      "comment": "Motor self-holding circuit: (Start OR Motor) AND NOT Stop -> Motor",
      "condition": {
        "type": "Series",
        "nodes": [
          {
            "type": "Parallel",
            "nodes": [
              { "type": "Contact", "mode": "NO", "variable": "Start_Btn" },
              { "type": "Contact", "mode": "NO", "variable": "Motor_Run" }
            ]
          },
          {
            "type": "Contact",
            "mode": "NC",
            "variable": "Stop_Btn"
          }
        ]
      },
      "coils": [
        { "mode": "Normal", "variable": "Motor_Run" }
      ]
    }
  ]
}