[ { "id": "c4495043459c465d", "type": "subflow", "name": "gather & repeat", "info": "", "category": "", "in": [ { "x": 60, "y": 80, "wires": [ { "id": "e97157a71ff3fc6b" } ] } ], "out": [ { "x": 380, "y": 80, "wires": [ { "id": "e97157a71ff3fc6b", "port": 0 } ] } ], "env": [], "meta": {}, "color": "#DDAA99" }, { "id": "e97157a71ff3fc6b", "type": "function", "z": "c4495043459c465d", "name": "gather & repeat", "func": "/**\n * This function node receives a monitored DataValue from OPC UA.\n * - msg.payload: Contains the value to be parsed into a float.\n * - msg.sourceTimestamp: Contains the value's timestamp in UTC ISO string format.\n *\n * It outputs messages to the first output with the following payload structure:\n * {\n * timestamp: new Date(msg.sourceTimestamp),\n * value: String(parseFloat(msg.payload))\n * }\n *\n * OPC UA only sends data when a value changes. To maintain a steady data stream, this node\n * repeats the last received value every second. The first repeated message is sent 1.5 seconds\n * after the initial message, with timestamps incrementing by the 1-second interval.\n *\n * Key constraints:\n * - Timestamps must always progress forward.\n * - Timing is based solely on OPC UA timestamps to avoid clock skew issues.\n * - Maintain only a single active timer to prevent duplicate messages.\n * - Timers are cleared properly upon node redeploy.\n */\n\nconst INTERVAL_MS = 1000; // 1-second interval for repeats\nconst INITIAL_DELAY_MS = 1500; // 1.5-second initial delay\n\n// Initialize context variables\nlet timer = context.get('timer');\nlet lastSentTimestamp = context.get('lastSentTimestamp') || 0;\nlet lastValue = context.get('lastValue');\nlet nextExpectedTimestamp = context.get('nextExpectedTimestamp') || 0;\n\n// Cleanup on node redeploy\nif (!context.get('initialized')) {\n node.on('close', function() {\n if (timer) {\n clearTimeout(timer);\n context.set('timer', null);\n }\n });\n context.set('initialized', 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"z": "8914237e0d8e46c7", "g": "b07d4a44ddb86adf", "name": "", "props": [ { "p": "serverTimestamp", "v": "", "vt": "date" }, { "p": "sourceTimestamp", "v": "", "vt": "date" }, { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "0", "payloadType": "str", "x": 310, "y": 880, "wires": [ [ "20844959a8ea715c" ] ] }, { "id": "7619f93616149cdc", "type": "function", "z": "8914237e0d8e46c7", "g": "11f19caa7b9760b7", "name": "gather & repeat", "func": "/**\n * This function node receives a monitored DataValue from OPC UA.\n * - msg.payload: Contains the value to be parsed into a float.\n * - msg.sourceTimestamp: Contains the value's timestamp in UTC ISO string format.\n *\n * It outputs messages to the first output with the following payload structure:\n * {\n * timestamp: new Date(msg.sourceTimestamp),\n * value: String(parseFloat(msg.payload))\n * }\n *\n * OPC UA only sends data when a value changes. To maintain a steady data stream, this node\n * repeats the last received value every second. The first repeated message is sent 1.5 seconds\n * after the initial message, with timestamps incrementing by the 1-second interval.\n *\n * Key constraints:\n * - Timestamps must always progress forward.\n * - Timing is based solely on OPC UA timestamps to avoid clock skew issues.\n * - Maintain only a single active timer to prevent duplicate messages.\n * - Timers are cleared properly upon node redeploy.\n */\n\nconst INTERVAL_MS = 1000; // 1-second interval for repeats\nconst INITIAL_DELAY_MS = 1500; // 1.5-second initial delay\n\n// Initialize context variables\nlet timer = context.get('timer');\nlet lastSentTimestamp = context.get('lastSentTimestamp') || 0;\nlet lastValue = context.get('lastValue');\nlet nextExpectedTimestamp = context.get('nextExpectedTimestamp') || 0;\n\n// Cleanup on node redeploy\nif (!context.get('initialized')) {\n node.on('close', function () {\n if (timer) {\n clearTimeout(timer);\n context.set('timer', null);\n }\n });\n context.set('initialized', true);\n}\n\nfunction sendAndSchedule(value, sourceTime) {\n // Send the message immediately\n node.send({\n payload: {\n timestamp: new Date(sourceTime),\n value: value\n }\n });\n\n // Update context\n context.set('lastSentTimestamp', sourceTime);\n context.set('lastValue', value);\n\n // Calculate the next expected timestamp\n const nextTs = sourceTime + INITIAL_DELAY_MS + INTERVAL_MS;\n context.set('nextExpectedTimestamp', nextTs);\n\n // Schedule the next repetition\n const delayUntilNextRepeat = INITIAL_DELAY_MS;\n timer = setTimeout(() => {\n sendRepeatedValue(value, nextTs, INTERVAL_MS);\n }, delayUntilNextRepeat);\n context.set('timer', timer);\n}\n\nfunction sendRepeatedValue(value, nextTs, interval) {\n // Send the repeated message\n node.send({\n payload: {\n timestamp: new Date(nextTs),\n value: value\n }\n });\n\n // Schedule the next repetition\n const nextNextTs = nextTs + interval;\n context.set('nextExpectedTimestamp', nextNextTs);\n\n timer = setTimeout(() => {\n 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"props": [ { "p": "topic", "vt": "str" }, { "p": "payload" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "[]", "payload": "[]", "payloadType": "str", "x": 690, "y": 740, "wires": [ [ "68e0c3653588a07d", "d3b1d8b5c05c2b22" ] ] }, { "id": "c9717ac11b53672e", "type": "function", "z": "8914237e0d8e46c7", "g": "62d148a7e9f5c520", "name": "enum to string", "func": "switch(msg.payload) {\n case 0:\n msg.payload = \"Off\";\n break;\n case 1:\n msg.payload = \"Standby\";\n break;\n case 2:\n msg.payload = \"Error\";\n break;\n case 3:\n msg.payload = \"Cleaning\";\n break;\n case 4:\n msg.payload = \"Serving Coffee\";\n break;\n case 5:\n msg.payload = \"Under Maintenance\";\n break;\n default:\n msg.payload = msg.payload;\n break;\n\n}\n// msg.payload = msg.payload;\nreturn msg;\n\n/*\n\nexport enum EnumCoffeeMachineModeEx {\n Off = 0,\n Standby = 1,\n Error = 2,\n Cleaning = 3,\n\n // not in spec !!!\n ServingCoffee = 4,\n\n UnderMaintenance = 5, // like filling 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"inject", "z": "8914237e0d8e46c7", "g": "23e92d93ed23febc", "name": "", "props": [], "repeat": "", "crontab": "", "once": true, "onceDelay": "1", "topic": "", "x": 290, "y": 1100, "wires": [ [ "36b2628c69b87d42" ] ] }, { "id": "f79e321ce9b22631", "type": "function", "z": "8914237e0d8e46c7", "g": "23e92d93ed23febc", "name": "remove payload", "func": "msg.payload = null;\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 360, "y": 1060, "wires": [ [ "36b2628c69b87d42" ] ] }, { "id": "6c7658b34fce0ac3", "type": "comment", "z": "8914237e0d8e46c7", "g": "a872632f0795dffe", "name": "Buttons", "info": "", "x": 1190, "y": 160, "wires": [] }, { "id": "9326ae6929032e87", "type": "comment", "z": "8914237e0d8e46c7", "name": "Coffee Machine ( visit http://127.0.0.1:1880/dashboard/CoffeeMachineSynopsis )", "info": "# Coffee Machine *\n\nThis example demostrate how to \ncreate a Dashboard that interacts \nwith a OPCUA CoffeeMachine\n\n", "x": 480, "y": 40, "wires": [] }, { "id": "b577d7342c008353", "type": "OpcUa-Client2-Explore", "z": "8914237e0d8e46c7", "g": "a9f1eb481f74dde3", "inputs": 1, "output": 4, "name": "", "endpoint": "9593045b235c321c", "nodeId": "/di:DeviceSet/ns1:CoffeeMachineA.kitchen:Parameters", "outputType": "Value", "excludeEmpty": false, "followOrganizes": false, "x": 460, "y": 1260, "wires": [ [ "af5560e53daca7e6", "96aded34d2e12af9" ] ] }, { "id": "529de43bbcc8ddd4", "type": "inject", "z": "8914237e0d8e46c7", "g": "a9f1eb481f74dde3", "name": "", "props": [], "repeat": "10", "crontab": "", "once": false, "onceDelay": "2", "topic": "", "x": 300, "y": 1260, "wires": [ [ "b577d7342c008353" ] ] }, { "id": "73a7a87a437b298c", "type": "csv", "z": "8914237e0d8e46c7", "g": "a9f1eb481f74dde3", "name": "", "spec": "rfc", "sep": ";", "hdrin": "", "hdrout": "once", "multi": "one", "ret": "\\n", "temp": "", "skip": "0", "strings": true, "include_empty_strings": "", "include_null_values": "", "x": 990, "y": 1260, "wires": [ [ "239601af1e96d917", "ccd602507a4abc68" ] ] }, { "id": "239601af1e96d917", "type": "file", "z": "8914237e0d8e46c7", "g": "a9f1eb481f74dde3", "name": "Append to Output.csv", "filename": "/tmp/output.csv", "filenameType": "str", "appendNewline": false, "createDir": false, "overwriteFile": "false", "encoding": "none", "x": 1200, "y": 1260, "wires": [ [] ] }, { "id": "ccd602507a4abc68", "type": "debug", "z": "8914237e0d8e46c7", "g": "a9f1eb481f74dde3", "name": "debug 13", "active": false, "tosidebar": true, "console": false, "tostatus": false, "complete": "payload", "targetType": "msg", "statusVal": "", "statusType": "auto", "x": 1160, "y": 1300, "wires": [] }, { "id": "d21be93e03b60165", "type": "OpcUa-Client2-Explore", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "inputs": 1, "output": 4, "name": "", "endpoint": "9593045b235c321c", "nodeId": "/di:DeviceSet/ns1:CoffeeMachineA.kitchen:Parameters", "outputType": "NodeId", "excludeEmpty": false, "followOrganizes": false, "x": 440, "y": 1540, "wires": [ [ "50c33de026727ab2" ] ] }, { "id": "1832b372c56dc715", "type": "inject", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "name": "", "props": [], "repeat": "", "crontab": "", "once": false, "onceDelay": "2", "topic": "", "x": 290, "y": 1540, "wires": [ [ "d21be93e03b60165" ] ] }, { "id": "5f6eeb0fc5228a66", "type": "OpcUa-Client2-Read", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "inputs": 1, "output": 4, "name": "", "endpoint": "9593045b235c321c", "attributeId": "Value", "nodeId": "", "outputType": "Value", "x": 870, "y": 1540, "wires": [ [ "fe845d4c6aa473d0", "829ce0410d7c3b05", "5e50f3a2da48a03b" ] ] }, { "id": "5e50f3a2da48a03b", "type": "debug", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "name": "debug 15", "active": false, "tosidebar": true, "console": false, "tostatus": false, "complete": "true", "targetType": "full", "statusVal": "", "statusType": "auto", "x": 1260, "y": 1460, "wires": [] }, { "id": "fe845d4c6aa473d0", "type": "delay", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "name": "", "pauseType": "delay", "timeout": "2", "timeoutUnits": "seconds", "rate": "1", "nbRateUnits": "1", "rateUnits": "second", "randomFirst": "1", "randomLast": "5", "randomUnits": "seconds", "drop": false, "allowrate": false, "outputs": 1, "x": 840, "y": 1480, "wires": [ [ "99b27a72cfb58370" ] ] }, { "id": "50c33de026727ab2", "type": "function", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "name": "memorize payload", "func": "flow.set(\"p\", msg.payload)\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 630, "y": 1540, "wires": [ [ "5f6eeb0fc5228a66" ] ] }, { "id": "99b27a72cfb58370", "type": "function", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "name": "function 3", "func": "msg.payload = flow.get(\"p\");\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 955, "y": 1480, "wires": [ [ "5f6eeb0fc5228a66" ] ], "l": false }, { "id": "829ce0410d7c3b05", "type": "function", "z": "8914237e0d8e46c7", "g": "230bb82688833807", "name": "clean up", "func": "msg.timestamp = new Date(); // new Date(msg.sourceTimestamp);\nmsg.payload.TotalMix = msg.payload.ServedCoffeeCount;\nmsg.payload.timestamp = msg.timestamp;\nmsg.payload.d= msg.timestamp.toISOString();\nmsg.payload.values = [ Math.random()*1000 , Math.random()*1000];\nmsg.payload.titles = [ \"A\", \"B\"]\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1100, "y": 1540, "wires": [ [ "5e50f3a2da48a03b", "1bea16ead1291025" ] ] }, { "id": "4cecc03d1a64c091", "type": "OpcUa-Client2-Browse", "z": "8914237e0d8e46c7", "g": "ec1ab7ca9e060d7f", "inputs": 1, "output": 4, "name": "", "endpoint": "9593045b235c321c", "nodeId": "/di:DeviceSet/ns1:CoffeeMachineA.sterfive:Recipes", "referenceTypeId": "HasChild", "includeSubtypes": false, "browseDirection": "Forward", "nodeClassMask": 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"finalize": "", "libs": [], "x": 1510, "y": 980, "wires": [ [ "e3c1066f3260a1cb" ] ] }, { "id": "e3c1066f3260a1cb", "type": "function", "z": "8914237e0d8e46c7", "g": "ec1ab7ca9e060d7f", "name": "prepare combo box options", "func": "msg.ui_update = {\n options: msg.payload\n};\nmsg.payload = msg.payload[0].value;\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1240, "y": 1060, "wires": [ [ "f6b1e7b0df0fa288", "237e980896f1a684" ] ] }, { "id": "0597a0ffcdab77cd", "type": "function", "z": "8914237e0d8e46c7", "g": "ec1ab7ca9e060d7f", "name": "memorize selectedComboValue", "func": "// This function is triggered whenever the combo box value changes.\n// It stores the selected value in the flow context.\nflow.set(\"selectedComboValue\", msg.payload);\nreturn null; // No output required from this node.\n\nreturn msg;", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 1710, "y": 1080, "wires": [ 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