tank_example_aws.json

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        "name": "",
        "topic": "logo/coil",
        "qos": "",
        "retain": "",
        "broker": "3fb1eb58.71aff4",
        "x": 620,
        "y": 380,
        "wires": []
    },
    {
        "id": "e5a1419b.46f9f",
        "type": "comment",
        "z": "628ade3e.cd4e1",
        "name": "SDM120 Energy Meter",
        "info": "",
        "x": 260,
        "y": 100,
        "wires": []
    },
    {
        "id": "7caafd85.83be44",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Voltage",
        "func": "var rawData = new ArrayBuffer(4);\nvar intView = new Uint16Array(rawData);\nvar fltView = new Float32Array(rawData);\n\nintView[0] = msg.payload[1]; //low\nintView[1] = msg.payload[0]; //high\n\nmsg.payload = parseFloat(fltView[0].toFixed(1));\nmsg.topic = \"voltage\";\n\nnode.status({fill:\"blue\",shape:\"ring\",text:msg.topic + \":\" + msg.payload});    \n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 460.5,
        "y": 186,
        "wires": [
            [
                "22b6715a.da163e",
                "28b63ad2.99e6b6",
                "bf6c9ea5.52956"
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        ]
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        "id": "d25ef5eb.2d39b8",
        "type": "modbus-queue-info",
        "z": "628ade3e.cd4e1",
        "name": "SDM120_queue",
        "topic": "",
        "unitid": "1",
        "queueReadIntervalTime": "1000",
        "lowLowLevel": "1",
        "lowLevel": 75,
        "highLevel": 150,
        "highHighLevel": 300,
        "server": "61d5b56.795f34c",
        "errorOnHighLevel": false,
        "x": 603.1428527832031,
        "y": 560.107177734375,
        "wires": [
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                "fa31e536.1f4728"
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    {
        "id": "36f27130.d569ae",
        "type": "inject",
        "z": "628ade3e.cd4e1",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "x": 172.1428680419922,
        "y": 600.1072082519531,
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        "z": "628ade3e.cd4e1",
        "name": "Reset queue",
        "rules": [
            {
                "t": "set",
                "p": "resetQueue",
                "pt": "msg",
                "to": "true",
                "tot": "bool"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
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        "y": 561.1071891784668,
        "wires": [
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        "z": "628ade3e.cd4e1",
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        "func": "var rawData = new ArrayBuffer(4);\nvar intView = new Uint16Array(rawData);\nvar fltView = new Float32Array(rawData);\n\nintView[0] = msg.payload[1]; //low\nintView[1] = msg.payload[0]; //high\n\nmsg.payload = parseFloat(fltView[0].toFixed(1));\nmsg.topic = \"current\";\n\nnode.status({fill:\"blue\",shape:\"ring\",text:msg.topic + \":\" + msg.payload});    \n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 459.5,
        "y": 244,
        "wires": [
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        "id": "9ec4253d.a423a8",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Power",
        "func": "var rawData = new ArrayBuffer(4);\nvar intView = new Uint16Array(rawData);\nvar fltView = new Float32Array(rawData);\n\nintView[0] = msg.payload[1]; //low\nintView[1] = msg.payload[0]; //high\n\nmsg.payload = parseFloat(fltView[0].toFixed(1));\nmsg.topic = \"power\";\n\nnode.status({fill:\"blue\",shape:\"ring\",text:msg.topic + \":\" + msg.payload});    \n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 450.5,
        "y": 297,
        "wires": [
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                "1f3add9f.6d2942",
                "28b63ad2.99e6b6"
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        "id": "bdd78f6a.e41be",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Frequency",
        "func": "var rawData = new ArrayBuffer(4);\nvar intView = new Uint16Array(rawData);\nvar fltView = new Float32Array(rawData);\n\nintView[0] = msg.payload[1]; //low\nintView[1] = msg.payload[0]; //high\n\nmsg.payload = parseFloat(fltView[0].toFixed(1));\nmsg.topic = \"frequency\";\n\nnode.status({fill:\"blue\",shape:\"ring\",text:msg.topic + \":\" + msg.payload});    \n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 518.5,
        "y": 349,
        "wires": [
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                "e7bab014.ae209",
                "28b63ad2.99e6b6"
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        "z": "628ade3e.cd4e1",
        "name": "Energy",
        "func": "var rawData = new ArrayBuffer(4);\nvar intView = new Uint16Array(rawData);\nvar fltView = new Float32Array(rawData);\n\nintView[0] = msg.payload[1]; //low\nintView[1] = msg.payload[0]; //high\n\nmsg.payload = parseFloat(fltView[0].toFixed(2));\nmsg.topic = \"energy\";\n\nnode.status({fill:\"blue\",shape:\"ring\",text:msg.topic + \":\" + msg.payload});    \n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 460.5,
        "y": 424,
        "wires": [
            [
                "a7ede4bf.33fca8",
                "28b63ad2.99e6b6"
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        "id": "22b6715a.da163e",
        "type": "ui_text",
        "z": "628ade3e.cd4e1",
        "group": "62501cae.2f15f4",
        "order": 0,
        "width": 0,
        "height": 0,
        "name": "",
        "label": "Voltage",
        "format": "{{msg.payload}} V",
        "layout": "row-spread",
        "x": 778.5,
        "y": 154,
        "wires": []
    },
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        "id": "f2caf6d5.198738",
        "type": "ui_text",
        "z": "628ade3e.cd4e1",
        "group": "62501cae.2f15f4",
        "order": 0,
        "width": 0,
        "height": 0,
        "name": "",
        "label": "Current",
        "format": "{{msg.payload}} A",
        "layout": "row-spread",
        "x": 647.5,
        "y": 243,
        "wires": []
    },
    {
        "id": "1f3add9f.6d2942",
        "type": "ui_text",
        "z": "628ade3e.cd4e1",
        "group": "62501cae.2f15f4",
        "order": 0,
        "width": 0,
        "height": 0,
        "name": "",
        "label": "Power",
        "format": "{{msg.payload}} W",
        "layout": "row-spread",
        "x": 643.5,
        "y": 298,
        "wires": []
    },
    {
        "id": "e7bab014.ae209",
        "type": "ui_text",
        "z": "628ade3e.cd4e1",
        "group": "62501cae.2f15f4",
        "order": 0,
        "width": 0,
        "height": 0,
        "name": "",
        "label": "Frequency",
        "format": "{{msg.payload}} Hz",
        "layout": "row-spread",
        "x": 774.5,
        "y": 371,
        "wires": []
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        "id": "a7ede4bf.33fca8",
        "type": "ui_text",
        "z": "628ade3e.cd4e1",
        "group": "62501cae.2f15f4",
        "order": 0,
        "width": 0,
        "height": 0,
        "name": "",
        "label": "Total Energy",
        "format": "{{msg.payload}} kWh",
        "layout": "row-spread",
        "x": 710.5,
        "y": 423,
        "wires": []
    },
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        "id": "28b63ad2.99e6b6",
        "type": "function",
        "z": "628ade3e.cd4e1",
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        "func": "watch_topic = \"energy\";\nvar output = {};\n\ncontext.set(msg.topic,msg.payload);\n\nif (context.get(\"voltage\")!==undefined) {\n    output.voltage = context.get(\"voltage\");\n}\nif (context.get(\"current\")!==undefined) {\n    output.current = context.get(\"current\");\n}\nif (context.get(\"power\")!==undefined) {\n    output.power = context.get(\"power\");\n}\nif (context.get(\"frequency\")!==undefined) {\n    output.frequency = context.get(\"frequency\");\n}\nif (context.get(\"energy\")!==undefined) {\n    output.energy = context.get(\"energy\");\n}\nmsg.payload = output;\n\nif (msg.topic===watch_topic) {\n    msg.topic = \"sdm120\";\n    return msg;\n}",
        "outputs": 1,
        "noerr": 0,
        "x": 858.5,
        "y": 261,
        "wires": [
            [
                "434cd798.eb4fc8",
                "36f552ce.1f6bce"
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        "type": "debug",
        "z": "628ade3e.cd4e1",
        "name": "",
        "active": false,
        "console": "false",
        "complete": "true",
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        "y": 316,
        "wires": []
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        "type": "function",
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        "name": "Diagnostic input message structure",
        "func": "// setting a global flag that the solar system is down\n\nmsg.payload = \"High voltage warning: \" + msg.payload.voltage +\" V\";\nmsg.system = 1; // System id, use 1 for Dummy\n//msg.state = 1; // specify if the message is to change system status\nmsg.severity = 1; // 0: information, 1: warning, 2: error\nmsg.email = false; // if separate email should be sent\n//msg.emailtext = \"Clean up step of the SAIA log backup has failed\";\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 1551.5,
        "y": 159,
        "wires": [
            [
                "9c319c03.ffaad"
            ]
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    {
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        "type": "link out",
        "z": "628ade3e.cd4e1",
        "name": "",
        "links": [
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        "x": 1758.5,
        "y": 181,
        "wires": []
    },
    {
        "id": "abce7bd2.f28d38",
        "type": "switch",
        "z": "628ade3e.cd4e1",
        "name": "Voltage check",
        "property": "payload.voltage_check",
        "propertyType": "msg",
        "rules": [
            {
                "t": "eq",
                "v": "high",
                "vt": "str"
            },
            {
                "t": "eq",
                "v": "low",
                "vt": "str"
            }
        ],
        "checkall": "true",
        "outputs": 2,
        "x": 1259.5,
        "y": 183,
        "wires": [
            [
                "deb0eb6a.b5b6a8"
            ],
            [
                "fb903198.e40b"
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        "id": "fb903198.e40b",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Diagnostic input message structure",
        "func": "// setting a global flag that the solar system is down\n\nmsg.payload = \"Low voltage warning: \" + msg.payload.voltage +\" V\";\nmsg.system = 1; // System id, use 1 for Dummy\n//msg.state = 1; // specify if the message is to change system status\nmsg.severity = 1; // 0: information, 1: warning, 2: error\nmsg.email = false; // if separate email should be sent\n//msg.emailtext = \"Clean up step of the SAIA log backup has failed\";\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 1551.5,
        "y": 204,
        "wires": [
            [
                "9c319c03.ffaad"
            ]
        ]
    },
    {
        "id": "36f552ce.1f6bce",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Voltage check",
        "func": "var high = 250.0;\nvar low = 220.0;\n\nif (msg.payload.voltage > high) {\n    msg.payload.voltage_check = \"high\";\n}\nif (msg.payload.voltage < low) {\n    msg.payload.voltage_check = \"low\";\n}\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 1046.5,
        "y": 184,
        "wires": [
            [
                "abce7bd2.f28d38"
            ]
        ]
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        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "reset on HighHigh",
        "func": "if(\"high high level reached\" === msg.state) {\n    msg.resetQueue = true;\n    return msg;\n}\n",
        "outputs": 1,
        "noerr": 0,
        "x": 476.00000762939453,
        "y": 691.2500247955322,
        "wires": [
            [
                "d25ef5eb.2d39b8",
                "bc894086.0a579"
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    {
        "id": "3f508b9d.dec2a4",
        "type": "catch",
        "z": "628ade3e.cd4e1",
        "name": "Catch queue errors",
        "scope": [
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        "x": 238.00000762939453,
        "y": 691.2500247955322,
        "wires": [
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    {
        "id": "c13ac472.bffcc8",
        "type": "comment",
        "z": "628ade3e.cd4e1",
        "name": "Error handling",
        "info": "",
        "x": 204.00000762939453,
        "y": 646.2500247955322,
        "wires": []
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        "id": "bc894086.0a579",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Diagnostic input message structure",
        "func": "// setting a global flag that the solar system is down\n\nmsg.payload = \"SDM120 modbus queue reached high level, resetting. (\" + msg.state + \")\";\nmsg.system = 4; // System id, use 1 for Dummy\n//msg.state = 1; // specify if the message is to change system status\nmsg.severity = 1; // 0: information, 1: warning, 2: error\nmsg.email = false; // if separate email should be sent\n//msg.emailtext = \"Clean up step of the SAIA log backup has failed\";\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 776.0000076293945,
        "y": 690.2500247955322,
        "wires": [
            [
                "915939da.43ae78"
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        ]
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        "id": "915939da.43ae78",
        "type": "link out",
        "z": "628ade3e.cd4e1",
        "name": "",
        "links": [
            "13e089a7.73cb46"
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        "x": 962.0000076293945,
        "y": 690.2500247955322,
        "wires": []
    },
    {
        "id": "ad895f01.04d7c",
        "type": "catch",
        "z": "628ade3e.cd4e1",
        "name": "Modbus read errors",
        "scope": [
            "bd2b5d02.ceb24",
            "bafae2b9.feeab",
            "34b2b2b6.e5604e",
            "d294d1dc.3acb5",
            "5b8bd7b9.e48b88",
            "e5a1419b.46f9f"
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        "x": 238.00000762939453,
        "y": 734.2500247955322,
        "wires": [
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        "id": "62be86bd.7b3db8",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Diagnostic input message structure",
        "func": "// setting a global flag that the solar system is down\n\nmsg.payload = \"SDM120 modbus error: \" + msg.error.message;\nmsg.system = 4; // System id, use 1 for Dummy\n//msg.state = 1; // specify if the message is to change system status\nmsg.severity = 1; // 0: information, 1: warning, 2: error\nmsg.email = false; // if separate email should be sent\n//msg.emailtext = \"Clean up step of the SAIA log backup has failed\";\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 527.0000076293945,
        "y": 734.2500247955322,
        "wires": [
            [
                "383ef9a.651f506"
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    {
        "id": "383ef9a.651f506",
        "type": "link out",
        "z": "628ade3e.cd4e1",
        "name": "",
        "links": [
            "13e089a7.73cb46"
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        "x": 713.0000076293945,
        "y": 734.2500247955322,
        "wires": []
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    {
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        "type": "debug",
        "z": "628ade3e.cd4e1",
        "name": "",
        "active": true,
        "console": "false",
        "complete": "true",
        "x": 784.0000076293945,
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        "wires": []
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    {
        "id": "3abb5f5.2fdbba",
        "type": "function",
        "z": "628ade3e.cd4e1",
        "name": "Health check",
        "func": "var devicename = \"sdm120\"; // Device name used for context variable\nvar system_id = 4; // System id number for diagnostic update\nvar online_threshold = 10; // Seconds between updates under which the device is considered online\nvar offline_threshold = 30; // Seconds between updates above which the device is considered offline\n\nvar temp = context.get(devicename+\"_update\");\nvar current = new Date();\nmsg.payload = \"No data\";\nmsg.warning = false;\nif (msg.topic!==\"timecheck\") {\n    // Do not update the context if it is triggered by the check inject node\n    context.set(devicename+\"_update\",current);\n}\nif (temp===undefined) {\n    // this will be the case when node-red is booting up or redeployed\n    context.set(devicename+\"_update\",current);\n}\n\nif (temp!==undefined) {\n    current = current - temp;\n    current = Math.floor(current/1000);\n    var minute = Math.floor(current/60);\n    var hour = Math.floor(minute/60);\n    var day = Math.floor(hour/24);\n    if (current>24*60*60) {\n        msg.payload = \"Last update \" + day + \" days, \" + hour%24 + \" hours, \" + minute%60 + \" minutes, \" + current%60 + \" seconds ago\";\n    } else if (current>60*60) {\n        msg.payload = \"Last update \" + hour%24 + \" hours, \" + minute%60 + \" minutes, \" + current%60 + \" seconds ago\";\n    } else if (current>60) {\n        msg.payload = \"Last update \" + minute%60 + \" minutes, \" + current%60 + \" seconds ago\";\n    } else {\n        msg.payload = \"Last update \" + current%60 + \" seconds ago\";\n    }\n\n    if (context.get(devicename+\"_state\")!==1) {\n        if (current<online_threshold) {\n            msg.payload = \"SDM120 is now online\";\n            msg.system = system_id; // System id, use 1 for Dummy\n            msg.state = 1; // specify if the message is to change system status\n            msg.severity = 0; // 0: information, 1: warning, 2: error\n            //msg.email = true; // if separate email should be sent\n            //msg.emailtext = \"\"; this a long text which goes into the email  \n            msg.warning = true;\n            context.set(devicename+\"_state\",1);\n        }\n    } else {\n        if (current>offline_threshold) {\n            msg.payload = \"SDM120 is not transmitting\";\n            msg.system = system_id; // System id, use 1 for Dummy\n            msg.state = 99; // specify if the message is to change system status\n            msg.severity = 2; // 0: information, 1: warning, 2: error\n            //msg.email = true; // if separate email should be sent\n            //msg.emailtext = \"\"; this a long text which goes into the email            \n            msg.warning = true;\n            context.set(devicename+\"_state\",99);\n        }\n    }\n    \n    \n}\n\nnode.status({fill:\"blue\",shape:\"ring\",text:msg.payload});\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 484.5,
        "y": 478,
        "wires": [
            [
                "9288c8a5.1fee28"
            ]
        ]
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    {
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        "type": "inject",
        "z": "628ade3e.cd4e1",
        "name": "Check",
        "topic": "timecheck",
        "payload": "",
        "payloadType": "date",
        "repeat": "1",
        "crontab": "",
        "once": false,
        "x": 157.5,
        "y": 551,
        "wires": [
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        "type": "switch",
        "z": "628ade3e.cd4e1",
        "name": "Update diag?",
        "property": "warning",
        "propertyType": "msg",
        "rules": [
            {
                "t": "true"
            }
        ],
        "checkall": "true",
        "outputs": 1,
        "x": 679.5,
        "y": 478,
        "wires": [
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                "c832ed33.b8238"
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    {
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        "z": "628ade3e.cd4e1",
        "name": "",
        "links": [
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        "y": 477.57140350341797,
        "wires": []
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        "z": "628ade3e.cd4e1",
        "name": "",
        "active": true,
        "console": "false",
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        "x": 461.5,
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        "wires": []
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    {
        "id": "bf6c9ea5.52956",
        "type": "mqtt out",
        "z": "628ade3e.cd4e1",
        "name": "Voltage",
        "topic": "modbus/voltage",
        "qos": "",
        "retain": "",
        "broker": "3720caa7.a45df6",
        "x": 420,
        "y": 40,
        "wires": []
    },
    {
        "id": "ad013c16.aafdb",
        "type": "random",
        "z": "7410fab9.141894",
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        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "x": 286,
        "y": 97,
        "wires": [
            [
                "785db5ba.72f02c"
            ]
        ]
    },
    {
        "id": "74f239cf.f36df8",
        "type": "ui_button",
        "z": "bcf97c72.58463",
        "name": "",
        "group": "f2bec9c3.abf208",
        "order": 11,
        "width": 0,
        "height": 0,
        "passthru": false,
        "label": "Clear All",
        "color": "",
        "bgcolor": "",
        "icon": "",
        "payload": "[]",
        "payloadType": "json",
        "topic": "",
        "x": 426,
        "y": 57,
        "wires": [
            [
                "69e95581.c67b6c",
                "cd411486.5517d8",
                "ed1ce218.1b697",
                "643027ed.4a5978",
                "21f3f2ed.33301e",
                "bffc32db.5d203"
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        ]
    },
    {
        "id": "1a619d0b.f5dc13",
        "type": "random",
        "z": "bcf97c72.58463",
        "name": "",
        "low": "1",
        "high": "10000000",
        "inte": "true",
        "x": 466,
        "y": 577,
        "wires": [
            [
                "bffc32db.5d203"
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        ]
    },
    {
        "id": "85c3ebc1.0e0c78",
        "type": "ui_text",
        "z": "bcf97c72.58463",
        "group": "b8c7b62a.60da78",
        "order": 2,
        "width": 0,
        "height": 0,
        "name": "",
        "label": "Pushbullet",
        "format": "{{msg.payload}}",
        "layout": "row-left",
        "x": 1209,
        "y": 369,
        "wires": []
    },
    {
        "id": "7d78b07.b2b755",
        "type": "debug",
        "z": "bcf97c72.58463",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "x": 1231,
        "y": 587,
        "wires": []
    },
    {
        "id": "7febac23.7093a4",
        "type": "pushbullet in",
        "z": "bcf97c72.58463",
        "config": "f362788e.9e7518",
        "name": "",
        "x": 1003,
        "y": 367,
        "wires": [
            [
                "85c3ebc1.0e0c78"
            ]
        ]
    },
    {
        "id": "14965f7.c174da1",
        "type": "amazon-echo-device",
        "z": "bcf97c72.58463",
        "name": "test",
        "topic": "",
        "x": 1013,
        "y": 581,
        "wires": [
            [
                "7d78b07.b2b755"
            ]
        ]
    },
    {
        "id": "ad9d1182.7498b",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "float Buffer to decimal conv.",
        "func": "const buf = msg.payload;\nconst value = buf.readFloatBE();\nmsg.payload = value;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 180,
        "y": 360,
        "wires": [
            [
                "af3bb6d.b79e648"
            ]
        ]
    },
    {
        "id": "9fdc8b7e.62d9b8",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "Integer to Buffer conv.",
        "func": "var payload=msg.payload;\nvar buf = Buffer.alloc(2);\nbuf.writeInt16BE(payload);\nmsg.payload=buf;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 180,
        "y": 120,
        "wires": [
            [
                "fa3d2d90.ff1fa",
                "a04a0d28.c376d"
            ]
        ]
    },
    {
        "id": "fa3d2d90.ff1fa",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "x": 390,
        "y": 80,
        "wires": []
    },
    {
        "id": "1dc3ccf1.26edd3",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "x": 470,
        "y": 280,
        "wires": []
    },
    {
        "id": "29b83b9d.6399c4",
        "type": "inject",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "topic": "",
        "payload": "259",
        "payloadType": "num",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 90,
        "y": 40,
        "wires": [
            [
                "9fdc8b7e.62d9b8"
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        ]
    },
    {
        "id": "a04a0d28.c376d",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "buffer to decimal Integer conv.",
        "func": "var buf = msg.payload;\nvar value = buf.readInt16BE();\nmsg.payload = value;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 250,
        "y": 200,
        "wires": [
            [
                "ce422909.887f28"
            ]
        ]
    },
    {
        "id": "6aaf63c7.4f73dc",
        "type": "inject",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "topic": "",
        "payload": "259.2",
        "payloadType": "num",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 90,
        "y": 240,
        "wires": [
            [
                "32cb794.904b686"
            ]
        ]
    },
    {
        "id": "32cb794.904b686",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "Float to Buffer conv.",
        "func": "var payload=msg.payload;\nvar buf = Buffer.alloc(4);\nbuf.writeFloatBE(payload);\nmsg.payload=buf;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 250,
        "y": 280,
        "wires": [
            [
                "1dc3ccf1.26edd3",
                "ad9d1182.7498b"
            ]
        ]
    },
    {
        "id": "3f9bed5.f0c2c12",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "Create Buffer",
        "func": "var buf=Buffer.alloc(10);\nvar a=[259,260,261,262,263];\nfor (var i=0,j=0;j<a.length;i+=2,j++)\n{\n    node.log(j+\"  \" +a.length);\n buf.writeInt16BE(a[j],i); \n\n}\nnode.log(buf);\nmsg.payload=buf;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 190,
        "y": 480,
        "wires": [
            [
                "f27257e5.5c4b38",
                "73bf78f.e317888"
            ]
        ]
    },
    {
        "id": "f27257e5.5c4b38",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "x": 430,
        "y": 500,
        "wires": []
    },
    {
        "id": "323ce988.3cb3a6",
        "type": "inject",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 120,
        "y": 420,
        "wires": [
            [
                "3f9bed5.f0c2c12"
            ]
        ]
    },
    {
        "id": "73bf78f.e317888",
        "type": "mqtt out",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "topic": "test_buffer",
        "qos": "",
        "retain": "",
        "broker": "8d40d19f.7caae",
        "x": 280,
        "y": 560,
        "wires": []
    },
    {
        "id": "b55b8901.03bf88",
        "type": "mqtt in",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "topic": "test_buffer",
        "qos": "0",
        "datatype": "auto",
        "broker": "8d40d19f.7caae",
        "x": 100,
        "y": 620,
        "wires": [
            [
                "af01563b.13e1f8",
                "fa9c3d72.11e66"
            ]
        ]
    },
    {
        "id": "af01563b.13e1f8",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "Received data",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 440,
        "y": 660,
        "wires": []
    },
    {
        "id": "ec9b0bed.971898",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "Decoded Buffer data",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 390,
        "y": 760,
        "wires": []
    },
    {
        "id": "fa9c3d72.11e66",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "Decode Buffer",
        "func": "var buf=msg.payload;\nvar a=[];\nfor (var i=0,j=0;i<buf.length;i+=2,j++)\n{\nnode.log(j+\"  \" +a.length);\n a[j]=buf.readInt16BE(i); \n\n}\nmsg.payload=a;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 160,
        "y": 720,
        "wires": [
            [
                "ec9b0bed.971898"
            ]
        ]
    },
    {
        "id": "7a34a24.414bb5c",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "Create Buffer Int +Float",
        "func": "var buf=Buffer.alloc(6);\nvar a=259;\nvar b=260.5;\nbuf.writeInt16BE(a,0); \nbuf.writeFloatBE(b,2); \nmsg.payload=buf;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 220,
        "y": 1240,
        "wires": [
            [
                "cde7a5d8.cfcdf8",
                "3839e9c2.349a56"
            ]
        ]
    },
    {
        "id": "34c12594.c7978a",
        "type": "inject",
        "z": "e1ccec9f.7e8b9",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 100,
        "y": 1140,
        "wires": [
            [
                "7a34a24.414bb5c"
            ]
        ]
    },
    {
        "id": "15684a4c.ff1036",
        "type": "comment",
        "z": "e1ccec9f.7e8b9",
        "name": "Buffer=Int +float",
        "info": "",
        "x": 180,
        "y": 1080,
        "wires": []
    },
    {
        "id": "cde7a5d8.cfcdf8",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "Int+Float ",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 440,
        "y": 1160,
        "wires": []
    },
    {
        "id": "3839e9c2.349a56",
        "type": "function",
        "z": "e1ccec9f.7e8b9",
        "name": "Decode Buffer",
        "func": "var buf=msg.payload;\n\nvar a=buf.readInt16BE(0); \nvar b=buf.readFloatBE(2); \nmsg.payload=a.toString() +\"  Float=  \"+ b.toFixed(2) ;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 220,
        "y": 1360,
        "wires": [
            [
                "72d0850e.aa975c"
            ]
        ]
    },
    {
        "id": "72d0850e.aa975c",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "Decode",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 440,
        "y": 1340,
        "wires": []
    },
    {
        "id": "ce422909.887f28",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "Integer",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 450,
        "y": 180,
        "wires": []
    },
    {
        "id": "af3bb6d.b79e648",
        "type": "debug",
        "z": "e1ccec9f.7e8b9",
        "name": "Float",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 458.0833435058594,
        "y": 354.5833435058594,
        "wires": []
    },
    {
        "id": "4354af2a.18fce",
        "type": "influxdb out",
        "z": "d7d07f95.3a883",
        "influxdb": "e8cfe233.02899",
        "name": "",
        "measurement": "random1",
        "precision": "",
        "retentionPolicy": "",
        "x": 550,
        "y": 200,
        "wires": []
    },
    {
        "id": "df06b8e9.5c3998",
        "type": "function",
        "z": "d7d07f95.3a883",
        "name": "single value",
        "func": "msg.payload = Math.random()*10;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 347,
        "y": 228,
        "wires": [
            [
                "4354af2a.18fce"
            ]
        ]
    },
    {
        "id": "5d34b183.709c",
        "type": "inject",
        "z": "d7d07f95.3a883",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": "",
        "x": 140,
        "y": 160,
        "wires": [
            [
                "df06b8e9.5c3998"
            ]
        ]
    },
    {
        "id": "122b4eb9.67d671",
        "type": "influxdb out",
        "z": "7410fab9.141894",
        "influxdb": "36725605.1446ea",
        "name": "",
        "measurement": "random1",
        "precision": "",
        "retentionPolicy": "",
        "x": 1230,
        "y": 40,
        "wires": []
    },
    {
        "id": "b5336e67.a6083",
        "type": "influxdb out",
        "z": "d7d07f95.3a883",
        "influxdb": "e8cfe233.02899",
        "name": "",
        "measurement": "harshad",
        "precision": "",
        "retentionPolicy": "",
        "x": 630,
        "y": 400,
        "wires": []
    },
    {
        "id": "9f8188ac.aa0268",
        "type": "function",
        "z": "d7d07f95.3a883",
        "name": "single value",
        "func": "msg.payload = Math.random()*10;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 427,
        "y": 428,
        "wires": [
            [
                "b5336e67.a6083"
            ]
        ]
    },
    {
        "id": "dea733e8.4cd98",
        "type": "inject",
        "z": "d7d07f95.3a883",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": "",
        "x": 220,
        "y": 360,
        "wires": [
            [
                "9f8188ac.aa0268"
            ]
        ]
    },
    {
        "id": "d61a2e92.3c96b",
        "type": "function",
        "z": "a51f08f4.7b5608",
        "name": "multiple readings",
        "func": "msg.payload = [\n    [{\n        numValue: 10,\n        randomValue: Math.random()*10,\n        strValue: \"message1\",\n        time: new Date(\"2015-12-28T19:41:13Z\").getTime()\n    },\n    {\n        tag1:\"temp\",\n        tag2:\"rh\"\n    }],\n    [{\n        numValue: 20,\n        randomValue: Math.random()*10,\n        strValue: \"message2\",\n        time: new Date(\"2015-12-28T19:41:14Z\").getTime()\n    },\n    {\n        tag1:\"temp\",\n        tag2:\"rh\"\n    }]\n];\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 330,
        "y": 200,
        "wires": [
            [
                "45a84f8a.327cc"
            ]
        ]
    },
    {
        "id": "570e330a.088d2c",
        "type": "inject",
        "z": "a51f08f4.7b5608",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "x": 156,
        "y": 200,
        "wires": [
            [
                "d61a2e92.3c96b"
            ]
        ]
    },
    {
        "id": "45a84f8a.327cc",
        "type": "influxdb out",
        "z": "a51f08f4.7b5608",
        "influxdb": "5bbb9cd.2f41c64",
        "name": "",
        "measurement": "ahu1",
        "precision": "",
        "retentionPolicy": "",
        "x": 521,
        "y": 199,
        "wires": []
    },
    {
        "id": "b0c4b78c.31fb78",
        "type": "modbus-read",
        "z": "ac32416f.210d2",
        "name": "Read Holding Registers",
        "showStatusActivities": false,
        "showErrors": false,
        "unitid": "1",
        "dataType": "HoldingRegister",
        "adr": "1",
        "quantity": "6",
        "rate": "500",
        "rateUnit": "ms",
        "server": "84a9ab5b.b116b8",
        "x": 200,
        "y": 260,
        "wires": [
            [],
            [
                "6838bb5e.8ecf34"
            ]
        ]
    },
    {
        "id": "6838bb5e.8ecf34",
        "type": "function",
        "z": "ac32416f.210d2",
        "name": " Decode array",
        "func": "//   The message returned from the read node is an\n// array as there could be multiple registers returned\n//   This reads the first value in the array.\ntank1Level = msg.payload.data[0]\ntank2Level = msg.payload.data[1]\ntank1Start = msg.payload.data[2]\ntank1Stop = msg.payload.data[3]\ntank2Start = msg.payload.data[4]\ntank2Stop = msg.payload.data[5]\n\nglobal.set(\"tank1Level\",tank1Level);\nglobal.set(\"tank2Level\",tank2Level);\nglobal.set(\"tank1Start\",tank1Start);\nglobal.set(\"tank1Stop\",tank1Stop);\nglobal.set(\"tank2Start\",tank2Start);\nglobal.set(\"tank2Stop\",tank2Stop);\n\ntank1HStp = (tank1Start - 15);\ntank1LStp = (tank1Stop + 15);\ntank2HStp = (tank1Start - 15);\ntank2LStp = (tank1Stop + 15);\n\nvar msg1 = { payload:tank1Level};\nvar msg2 = { payload:tank2Level};\nvar msg3 = { payload:tank1Start};\nvar msg4 = { payload:tank1Stop};\nvar msg5 = { payload:tank2Start};\nvar msg6 = { payload:tank2Stop};\nvar msg7 = { payload:tank1HStp};\nvar msg8 = { payload:tank1LStp};\nvar msg9 = { payload:tank2HStp};\nvar msg10 = { payload:tank2LStp};\n\n\n\n\nreturn [ msg1, msg2, msg3, msg4, msg5, msg6, msg7, msg8, msg9, msg10 ];\n",
        "outputs": "10",
        "noerr": 0,
        "x": 224.78684997558594,
        "y": 381.7841491699219,
        "wires": [
            [
                "798300ed.3f7df",
                "a81fbedc.ea2b6",
                "5c366b66.a7f144",
                "ffb0dfa.8fd4b2"
            ],
            [
                "96d93560.e242a8",
                "5f66ab1e.959544",
                "10383137.cb89bf",
                "987ca55f.e6db88"
            ],
            [
                "148a833a.ce7c3d"
            ],
            [
                "ba9c177c.a2b238"
            ],
            [
                "43d8fddc.58a474"
            ],
            [
                "4bbe5566.a9c88c"
            ],
            [
                "8d42a4dd.7335b8"
            ],
            [
                "16c70008.db4f7"
            ],
            [
                "2587797c.df9946"
            ],
            [
                "3536600d.b6cb5"
            ]
        ]
    },
    {
        "id": "80c7f8b0.f66808",
        "type": "modbus-server",
        "z": "ac32416f.210d2",
        "name": "Modbus Server",
        "logEnabled": false,
        "serverPort": "502",
        "responseDelay": 100,
        "delayUnit": "ms",
        "coilsBufferSize": 1024,
        "holdingBufferSize": 1024,
        "inputBufferSize": 1024,
        "x": 357.00001525878906,
        "y": 1231.0000882148743,
        "wires": [
            [
                "8e3fd1.e182803"
            ],
            [
                "8e3fd1.e182803"
            ],
            [
                "8e3fd1.e182803"
            ],
            []
        ]
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