[
  {
    "id": "sum_tab_1",
    "type": "tab",
    "label": "SumUltimate - sum + subtract",
    "disabled": false,
    "info": "Esempi: somma con topic diversi e sottrazione con \"Subtract from\"."
  },
  {
    "id": "sum_cmt_1",
    "type": "comment",
    "z": "sum_tab_1",
    "name": "SUM: ogni msg.topic rappresenta una variabile",
    "info": "Il nodo memorizza l'ultimo valore per ciascun topic e ricalcola ad ogni arrivo.",
    "x": 240,
    "y": 60,
    "wires": []
  },
  {
    "id": "sum_inj_a",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "a = 10",
    "props": [
      { "p": "payload" },
      { "p": "topic", "vt": "str" }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "a",
    "payload": "10",
    "payloadType": "num",
    "x": 120,
    "y": 120,
    "wires": [["sum_node_sum"]]
  },
  {
    "id": "sum_inj_b",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "b = 5",
    "props": [
      { "p": "payload" },
      { "p": "topic", "vt": "str" }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "b",
    "payload": "5",
    "payloadType": "num",
    "x": 110,
    "y": 160,
    "wires": [["sum_node_sum"]]
  },
  {
    "id": "sum_inj_c",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "c = 2",
    "props": [
      { "p": "payload" },
      { "p": "topic", "vt": "str" }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "c",
    "payload": "2",
    "payloadType": "num",
    "x": 110,
    "y": 200,
    "wires": [["sum_node_sum"]]
  },
  {
    "id": "sum_inj_reset_1",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "reset",
    "props": [{ "p": "reset", "v": "true", "vt": "bool" }],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "x": 110,
    "y": 240,
    "wires": [["sum_node_sum", "sum_node_sub"]]
  },
  {
    "id": "sum_node_sum",
    "type": "SumUltimate",
    "z": "sum_tab_1",
    "name": "Sum",
    "property": "payload",
    "math": "sum",
    "subtractstartfrom": "",
    "x": 320,
    "y": 160,
    "wires": [["sum_dbg_sum"]]
  },
  {
    "id": "sum_dbg_sum",
    "type": "debug",
    "z": "sum_tab_1",
    "name": "SUM result",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "payload",
    "targetType": "msg",
    "statusVal": "",
    "statusType": "auto",
    "x": 540,
    "y": 160,
    "wires": []
  },
  {
    "id": "sum_cmt_2",
    "type": "comment",
    "z": "sum_tab_1",
    "name": "SUBTRACT: scegli il topic iniziale (Subtract from)",
    "info": "Qui la sottrazione parte dal topic \"startNumber\" e sottrae a/b.",
    "x": 270,
    "y": 300,
    "wires": []
  },
  {
    "id": "sum_inj_start",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "startNumber = 100",
    "props": [
      { "p": "payload" },
      { "p": "topic", "vt": "str" }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "startNumber",
    "payload": "100",
    "payloadType": "num",
    "x": 150,
    "y": 360,
    "wires": [["sum_node_sub"]]
  },
  {
    "id": "sum_inj_sa",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "a = 20",
    "props": [
      { "p": "payload" },
      { "p": "topic", "vt": "str" }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "a",
    "payload": "20",
    "payloadType": "num",
    "x": 120,
    "y": 400,
    "wires": [["sum_node_sub"]]
  },
  {
    "id": "sum_inj_sb",
    "type": "inject",
    "z": "sum_tab_1",
    "name": "b = 10",
    "props": [
      { "p": "payload" },
      { "p": "topic", "vt": "str" }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "b",
    "payload": "10",
    "payloadType": "num",
    "x": 120,
    "y": 440,
    "wires": [["sum_node_sub"]]
  },
  {
    "id": "sum_node_sub",
    "type": "SumUltimate",
    "z": "sum_tab_1",
    "name": "Subtract",
    "property": "payload",
    "math": "subtract",
    "subtractstartfrom": "startNumber",
    "x": 330,
    "y": 420,
    "wires": [["sum_dbg_sub"]]
  },
  {
    "id": "sum_dbg_sub",
    "type": "debug",
    "z": "sum_tab_1",
    "name": "SUBTRACT result",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "payload",
    "targetType": "msg",
    "statusVal": "",
    "statusType": "auto",
    "x": 560,
    "y": 420,
    "wires": []
  }
]