Monatsrückblick Juli / August 2026 ist online!

[Homoran]

@andibr

Aber laut github Seite
https://github.com/PLCHome/iobroker.pylontech

Ist der auch für pytes

[andibr]

@Homoran
Ja, ich weiss. Und ich habe etliches getestet, nur er hat weder die Schnittstelle noch die Pytes gefunden.
Mit den genau gleichen Vorgaben und Linux Rechten schafft es mein Node-Red aus dem gleichen LXC Container raus das Master BMS zu erreichen. Der Adapter schaffte es aber nicht, zu dem hat er automatisch Datenpunkte angelegt beim einfügen der Instanz, die es gar nicht gibt.
Ich gehe davon aus, dass der Adapter mal geschaffen und getesten wurde mit Pylontech und weil die BMS vieleicht mal identisch gearbeitet hatten das dann so reingekommen ist. Leider hat auch der Entwickler des Adapters bis jetz keine Reaktion gezeigt, so dass ich davon aus gehe, dass kein Interesse mehr besteht. Darum habe ich eben den mir einigermassen gangbare Weg gewählt. Adapterentwicklung oder Anpassung ist ausserhalb meiner Fähigkeiten.
Ich helfe gerne wenn ich was testen kann, aber wie man im ganzen Verlauf sehen kann, begreife ich gewisse Software Dinge irgend wie nicht.
Ich weiss man könnte auch den Flow viel eleganter machen mit einer Liste und immer der gleichen Abfrage, aber ich habe es nicht hingekriegt.

[Homoran]

Mein Problem ist, dass ich mit node-red vielleicht vor knapp 10 Jahren zuletzt gearbeitet hatte.
Seit es Blockly gibt bin ich damit unterwegs.

Aber selbst wenn es mit dem Pytes-Kabel direkt ginge, wüsste ich überhaupt nicht wie ich die Schnittstelle ansprechen müsste.

[OliverIO]

@andibr

Wenn es einen timeout gibt kommt wahrscheinlich kein String. Entweder eine Fehlermeldung oder nix. Die nachfolgenden nodes verarbeiten das gnadenlos.
Da müsste man dann das ausfiltern

[andibr]

@Homoran
Keine Ahnung ob man mit Blockly das auch hinkriegen würde, aber grundsätzlich ist es nichts kompliziertes. Wenn du mit dem original Pytes Kabel und dem Windows BMS-Tool drauf zugreifen kannst, geht es mit allem anderen auch.
Mit Putty kannst du eine "telnet" Verbindung auf den COMx Port aufbauen und schon kannst du die Daten abholen. Sobald die Verbindung aufgebaut ist, einfach "bat 1" schreiben und ENTER drücken, dann kommen die Daten auf den Bildschirm.
Das aufwendige ist eher die angezeigten Daten in etwas vernünftiges zu verwandeln.
Die serielle Schnittstelle ist da sehr dankbar, braucht 3 Drähte und die gleiche Einstellungen und die Geräte sprechen miteinander, ist halt eben eine der ersten Computerschnittstellen die es dazumals gab.
Leider sind die Distanzen erwas gross in die Schweiz, sonst würde ich gerne auch praktisch helfen.

[andibr]

@OliverIO ich kopiere morgen mal die Meldungen die mir Node-Red auswirft. Es steht meistens, ....ist kein String....

[andibr]

Mein Flow sieht so aus:

Manchmal funktioniert es richtig und manchmal eben nicht. Ich habe mir überlegt, ob evt. daran liegen könnte, dass der Port nach der Abfrage nicht geschlossen wird?
Wenn ich im Minicom den Connect offen stehen lasse ist mir bis jetzt nicht aufgefallen, dass da keine Antwort kommen würde.

Im Log sieht es dann so aus:

Wenn ich dann den Flow verändere und neu deploye funktioniert es eine Weile ganz gut und plötzlich geht es wieder nicht mehr. Bis jetzt habe ich noch kein Muster gefunden.

Ich habe da noch alte USR-TCP232-T2 Adapter rumliegen

Allenfalls könnte man damit ja auch etwas machen und hätte dann einfach einen Netzwerk-Port zum abfragen, aber ich denke das Thema mit dem Timeout wird gleich bleiben. So wie ich es verstehe kommt der Timeout nicht vom Port sondern ist ein "nicht reagieren des BMS".

[OliverIO]

@andibr

Als erstes muss man rausfinden an welcher Node der Fehler entsteht.
Dann in dieser function node etwas debug code einbauen
Damit man sieht was für ein datentyp da ankommt und was für Inhaltsangaben ankommt.
Dann muss man bewerten wie man damit umgeht.
Wenn es sonst funktioniert, dann kann man das einfach durch Code ausfiltern, also keine msg zurückgeben, so das die nachfolgenden nodes nicht getriggert werden.

Nur mit einem Bild vom Flow kann niemand was anfangen.
Mit mehr, kann ich erst Ende nächster woche weitermachen

[andibr]

@OliverIO ich versuche morgen noch etwas mehr raus zu holen. Eben es verwirrt mich das es manchmal durchläuft und dann plötzlich nicht mehr.
Für mich als Laie sieht es irgendwie so aus, wie wenn das BMS irgendwie auf was warten würde und daher nicht mehr.

[peterfido]

Statt des Screenshots am besten den Node-Red-Export hier in Code-Tags posten. Dann kann man sehen, ob man helfen kann.

[andibr]

@peterfido

Hier ist der ganze Flow, den ich unterdessen zusammen habe:

[
    {
        "id": "26771494c726dd85",
        "type": "tab",
        "label": "Pytes",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "09a7088a7c52e930",
        "type": "inject",
        "z": "26771494c726dd85",
        "name": "Start Impuls",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "900",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "bat",
        "payloadType": "str",
        "x": 130,
        "y": 60,
        "wires": [
            [
                "f6f7978549817c9b",
                "dd20c6bfc8c1643a",
                "aae8b0af1ff64ae1",
                "6df4f9bd092fdcd3",
                "d81970d6d1e4cca6",
                "c8cc5a91dbf6eb1a",
                "09faeaa564e7d7ea",
                "027109f5112c3c3e"
            ]
        ]
    },
    {
        "id": "f6f7978549817c9b",
        "type": "trigger",
        "z": "26771494c726dd85",
        "name": "bat 1",
        "op1": "bat 1",
        "op2": "",
        "op1type": "str",
        "op2type": "nul",
        "duration": "250",
        "extend": false,
        "overrideDelay": false,
        "units": "ms",
        "reset": "",
        "bytopic": "all",
        "topic": "topic",
        "outputs": 1,
        "x": 690,
        "y": 60,
        "wires": [
            [
                "f1e94e531bb2b4f9"
            ]
        ]
    },
    {
        "id": "f1e94e531bb2b4f9",
        "type": "serial request",
        "z": "26771494c726dd85",
        "name": "BMSMaster",
        "serial": "d031dd424e7b1ff2",
        "x": 890,
        "y": 60,
        "wires": [
            [
                "79724f85531596e4",
                "4b31f05c7b6c5425"
            ]
        ]
    },
    {
        "id": "79724f85531596e4",
        "type": "function",
        "z": "26771494c726dd85",
        "name": "convert to msgs",
        "func": "const text = msg.payload;\n\nif (typeof text !== \"string\") {\n    node.error(\"msg.payload ist kein String\", msg);\n    return null;\n}\n\n// In einzelne Zeilen zerlegen\nconst lines = text\n    .split(/\\r?\\n/)\n    .map(line => line.trim())\n    .filter(line => line !== \"\");\n\n// Nur Zeilen berücksichtigen, die mit einer Batterienummer beginnen\nconst dataLines = lines.filter(line => /^\\d+\\s/.test(line));\n\nconst messages = [];\n\nfor (const line of dataLines) {\n\n    // Spalten sind durch mindestens 2 Leerzeichen getrennt\n    const columns = line.split(/\\s{2,}/);\n\n    if (columns.length < 9) {\n        node.warn(\"Zeile konnte nicht verarbeitet werden: \" + line);\n        continue;\n    }\n\n    const battery = {\n        battery: Number(columns[0]),\n        volt: Number(columns[1]),\n        tempr: Number(columns[2]),\n        baseState: columns[3],\n        voltState: columns[4],\n        currState: columns[5],\n        tempState: columns[6],\n        coulomb: Number(columns[7].replace(\"%\", \"\")),\n        capacity: Number(columns[8].replace(/[^\\d]/g, \"\"))\n    };\n\n    messages.push({\n        ...msg,\n        payload: battery\n    });\n}\n\n// Alle Nachrichten nacheinander über denselben Ausgang senden\nreturn [messages];",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1080,
        "y": 60,
        "wires": [
            [
                "4a8dcae7d0f7d8a8"
            ]
        ]
    },
    {
        "id": "68c635b31d513d6d",
        "type": "debug",
        "z": "26771494c726dd85",
        "name": "debug 4",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1440,
        "y": 120,
        "wires": []
    },
    {
        "id": "6a16c00e7b0e2997",
        "type": "ioBroker out",
        "z": "26771494c726dd85",
        "name": "",
        "topic": "",
        "ack": "true",
        "autoCreate": "true",
        "stateName": "",
        "role": "",
        "payloadType": "",
        "readonly": "",
        "stateUnit": "",
        "stateMin": "",
        "stateMax": "",
        "x": 1460,
        "y": 60,
        "wires": []
    },
    {
        "id": "4a8dcae7d0f7d8a8",
        "type": "function",
        "z": "26771494c726dd85",
        "name": "function 2",
        "func": "const battery = msg.payload;\n\nif (!battery || battery.battery === undefined) {\n    node.error(\"Ungültiges Battery-Objekt\", msg);\n    return null;\n}\n\nconst batteryId = battery.battery;\n\nconst states = [\n    {\n        id: \"voltage\",\n        value: battery.volt,\n        name: \"Voltage\",\n        role: \"value.voltage\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mV\",\n        min: 0\n    },\n    {\n        id: \"temperature\",\n        value: battery.tempr / 1000,\n        name: \"Temperature\",\n        role: \"value.temperature\",\n        type: \"number\",\n        readonly: true,\n        unit: \"°C\"\n    },\n    {\n        id: \"baseState\",\n        value: battery.baseState,\n        name: \"Base State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"voltageState\",\n        value: battery.voltState,\n        name: \"Voltage State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"currentState\",\n        value: battery.currState,\n        name: \"Current State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"temperatureState\",\n        value: battery.tempState,\n        name: \"Temperature State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"charge\",\n        value: battery.coulomb,\n        name: \"Charge\",\n        role: \"value.battery\",\n        type: \"number\",\n        readonly: true,\n        unit: \"%\",\n        min: 0,\n        max: 100\n    },\n    {\n        id: \"capacity\",\n        value: battery.capacity,\n        name: \"Capacity\",\n        role: \"value\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mAh\",\n        min: 0\n    }\n];\n\nconst messages = [];\n\nfor (const state of states) {\n    const out = {\n        topic: `0_userdata.0.pytes.01.${batteryId}.${state.id}`,\n        payload: state.value,\n\n        stateName: state.name,\n        stateRole: state.role,\n        stateType: state.type,\n        stateReadonly: state.readonly\n    };\n\n    if (state.unit !== undefined) {\n        out.stateUnit = state.unit;\n    }\n\n    if (state.min !== undefined) {\n        out.stateMin = state.min;\n    }\n\n    if (state.max !== undefined) {\n        out.stateMax = state.max;\n    }\n\n    messages.push(out);\n}\n\nreturn [messages];",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1260,
        "y": 60,
        "wires": [
            [
                "6a16c00e7b0e2997",
                "68c635b31d513d6d"
            ]
        ]
    },
    {
        "id": "dd20c6bfc8c1643a",
        "type": "delay",
        "z": "26771494c726dd85",
        "name": "",
        "pauseType": "delay",
        "timeout": "1",
        "timeoutUnits": "minutes",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "allowrate": false,
        "outputs": 1,
        "x": 520,
        "y": 200,
        "wires": [
            [
                "0dc431cc8e3444fa"
            ]
        ]
    },
    {
        "id": "3cce03774442db86",
        "type": "debug",
        "z": "26771494c726dd85",
        "name": "debug 2",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1440,
        "y": 260,
        "wires": []
    },
    {
        "id": "0dc431cc8e3444fa",
        "type": "trigger",
        "z": "26771494c726dd85",
        "name": "bat 2",
        "op1": "bat 2",
        "op2": "",
        "op1type": "str",
        "op2type": "nul",
        "duration": "250",
        "extend": false,
        "overrideDelay": false,
        "units": "ms",
        "reset": "",
        "bytopic": "all",
        "topic": "topic",
        "outputs": 1,
        "x": 730,
        "y": 200,
        "wires": [
            [
                "72209bb281ee39b7"
            ]
        ]
    },
    {
        "id": "72209bb281ee39b7",
        "type": "serial request",
        "z": "26771494c726dd85",
        "name": "BMSMaster",
        "serial": "d031dd424e7b1ff2",
        "x": 890,
        "y": 200,
        "wires": [
            [
                "9441d38d2c549fb8"
            ]
        ]
    },
    {
        "id": "9441d38d2c549fb8",
        "type": "function",
        "z": "26771494c726dd85",
        "name": "convert to msgs",
        "func": "const text = msg.payload;\n\nif (typeof text !== \"string\") {\n    node.error(\"msg.payload ist kein String\", msg);\n    return null;\n}\n\n// In einzelne Zeilen zerlegen\nconst lines = text\n    .split(/\\r?\\n/)\n    .map(line => line.trim())\n    .filter(line => line !== \"\");\n\n// Nur Zeilen berücksichtigen, die mit einer Batterienummer beginnen\nconst dataLines = lines.filter(line => /^\\d+\\s/.test(line));\n\nconst messages = [];\n\nfor (const line of dataLines) {\n\n    // Spalten sind durch mindestens 2 Leerzeichen getrennt\n    const columns = line.split(/\\s{2,}/);\n\n    if (columns.length < 9) {\n        node.warn(\"Zeile konnte nicht verarbeitet werden: \" + line);\n        continue;\n    }\n\n    const battery = {\n        battery: Number(columns[0]),\n        volt: Number(columns[1]),\n        tempr: Number(columns[2]),\n        baseState: columns[3],\n        voltState: columns[4],\n        currState: columns[5],\n        tempState: columns[6],\n        coulomb: Number(columns[7].replace(\"%\", \"\")),\n        capacity: Number(columns[8].replace(/[^\\d]/g, \"\"))\n    };\n\n    messages.push({\n        ...msg,\n        payload: battery\n    });\n}\n\n// Alle Nachrichten nacheinander über denselben Ausgang senden\nreturn [messages];",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1080,
        "y": 200,
        "wires": [
            [
                "c7f18bb5735b986f"
            ]
        ]
    },
    {
        "id": "5f5f0afbf22fe52b",
        "type": "ioBroker out",
        "z": "26771494c726dd85",
        "name": "",
        "topic": "",
        "ack": "true",
        "autoCreate": "true",
        "stateName": "",
        "role": "",
        "payloadType": "",
        "readonly": "",
        "stateUnit": "",
        "stateMin": "",
        "stateMax": "",
        "x": 1460,
        "y": 200,
        "wires": []
    },
    {
        "id": "c7f18bb5735b986f",
        "type": "function",
        "z": "26771494c726dd85",
        "name": "function 3",
        "func": "const battery = msg.payload;\n\nif (!battery || battery.battery === undefined) {\n    node.error(\"Ungültiges Battery-Objekt\", msg);\n    return null;\n}\n\nconst batteryId = battery.battery;\n\nconst states = [\n    {\n        id: \"voltage\",\n        value: battery.volt,\n        name: \"Voltage\",\n        role: \"value.voltage\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mV\",\n        min: 0\n    },\n    {\n        id: \"temperature\",\n        value: battery.tempr / 1000,\n        name: \"Temperature\",\n        role: \"value.temperature\",\n        type: \"number\",\n        readonly: true,\n        unit: \"°C\"\n    },\n    {\n        id: \"baseState\",\n        value: battery.baseState,\n        name: \"Base State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"voltageState\",\n        value: battery.voltState,\n        name: \"Voltage State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"currentState\",\n        value: battery.currState,\n        name: \"Current State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"temperatureState\",\n        value: battery.tempState,\n        name: \"Temperature State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"charge\",\n        value: battery.coulomb,\n        name: \"Charge\",\n        role: \"value.battery\",\n        type: \"number\",\n        readonly: true,\n        unit: \"%\",\n        min: 0,\n        max: 100\n    },\n    {\n        id: \"capacity\",\n        value: battery.capacity,\n        name: \"Capacity\",\n        role: \"value\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mAh\",\n        min: 0\n    }\n];\n\nconst messages = [];\n\nfor (const state of states) {\n    const out = {\n        topic: `0_userdata.0.pytes.02.${batteryId}.${state.id}`,\n        payload: state.value,\n\n        stateName: state.name,\n        stateRole: state.role,\n        stateType: state.type,\n        stateReadonly: state.readonly\n    };\n\n    if (state.unit !== undefined) {\n        out.stateUnit = state.unit;\n    }\n\n    if (state.min !== undefined) {\n        out.stateMin = state.min;\n    }\n\n    if (state.max !== undefined) {\n        out.stateMax = state.max;\n    }\n\n    messages.push(out);\n}\n\nreturn [messages];",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1260,
        "y": 200,
        "wires": [
            [
                "5f5f0afbf22fe52b",
                "3cce03774442db86"
            ]
        ]
    },
    {
        "id": "aae8b0af1ff64ae1",
        "type": "delay",
        "z": "26771494c726dd85",
        "name": "",
        "pauseType": "delay",
        "timeout": "2",
        "timeoutUnits": "minutes",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "allowrate": false,
        "outputs": 1,
        "x": 520,
        "y": 340,
        "wires": [
            [
                "085f008ec32136f1"
            ]
        ]
    },
    {
        "id": "acfcfbc9dab48c55",
        "type": "debug",
        "z": "26771494c726dd85",
        "name": "debug 5",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1440,
        "y": 400,
        "wires": []
    },
    {
        "id": "085f008ec32136f1",
        "type": "trigger",
        "z": "26771494c726dd85",
        "name": "bat 3",
        "op1": "bat 3",
        "op2": "",
        "op1type": "str",
        "op2type": "nul",
        "duration": "250",
        "extend": false,
        "overrideDelay": false,
        "units": "ms",
        "reset": "",
        "bytopic": "all",
        "topic": "topic",
        "outputs": 1,
        "x": 730,
        "y": 340,
        "wires": [
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                "7134518ae47c75db"
            ]
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    },
    {
        "id": "7134518ae47c75db",
        "type": "serial request",
        "z": "26771494c726dd85",
        "name": "BMSMaster",
        "serial": "d031dd424e7b1ff2",
        "x": 890,
        "y": 340,
        "wires": [
            [
                "2819be0b93263306"
            ]
        ]
    },
    {
        "id": "2819be0b93263306",
        "type": "function",
        "z": "26771494c726dd85",
        "name": "convert to msgs",
        "func": "const text = msg.payload;\n\nif (typeof text !== \"string\") {\n    node.error(\"msg.payload ist kein String\", msg);\n    return null;\n}\n\n// In einzelne Zeilen zerlegen\nconst lines = text\n    .split(/\\r?\\n/)\n    .map(line => line.trim())\n    .filter(line => line !== \"\");\n\n// Nur Zeilen berücksichtigen, die mit einer Batterienummer beginnen\nconst dataLines = lines.filter(line => /^\\d+\\s/.test(line));\n\nconst messages = [];\n\nfor (const line of dataLines) {\n\n    // Spalten sind durch mindestens 2 Leerzeichen getrennt\n    const columns = line.split(/\\s{2,}/);\n\n    if (columns.length < 9) {\n        node.warn(\"Zeile konnte nicht verarbeitet werden: \" + line);\n        continue;\n    }\n\n    const battery = {\n        battery: Number(columns[0]),\n        volt: Number(columns[1]),\n        tempr: Number(columns[2]),\n        baseState: columns[3],\n        voltState: columns[4],\n        currState: columns[5],\n        tempState: columns[6],\n        coulomb: Number(columns[7].replace(\"%\", \"\")),\n        capacity: Number(columns[8].replace(/[^\\d]/g, \"\"))\n    };\n\n    messages.push({\n        ...msg,\n        payload: battery\n    });\n}\n\n// Alle Nachrichten nacheinander über denselben Ausgang senden\nreturn [messages];",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 1080,
        "y": 340,
        "wires": [
            [
                "ca02643445158e40"
            ]
        ]
    },
    {
        "id": "ea0794a8642caf84",
        "type": "ioBroker out",
        "z": "26771494c726dd85",
        "name": "",
        "topic": "",
        "ack": "true",
        "autoCreate": "true",
        "stateName": "",
        "role": "",
        "payloadType": "",
        "readonly": "",
        "stateUnit": "",
        "stateMin": "",
        "stateMax": "",
        "x": 1460,
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        "func": "const battery = msg.payload;\n\nif (!battery || battery.battery === undefined) {\n    node.error(\"Ungültiges Battery-Objekt\", msg);\n    return null;\n}\n\nconst batteryId = battery.battery;\n\nconst states = [\n    {\n        id: \"voltage\",\n        value: battery.volt,\n        name: \"Voltage\",\n        role: \"value.voltage\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mV\",\n        min: 0\n    },\n    {\n        id: \"temperature\",\n        value: battery.tempr / 1000,\n        name: \"Temperature\",\n        role: \"value.temperature\",\n        type: \"number\",\n        readonly: true,\n        unit: \"°C\"\n    },\n    {\n        id: \"baseState\",\n        value: battery.baseState,\n        name: \"Base State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"voltageState\",\n        value: battery.voltState,\n        name: \"Voltage State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"currentState\",\n        value: battery.currState,\n        name: \"Current State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"temperatureState\",\n        value: battery.tempState,\n        name: \"Temperature State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"charge\",\n        value: battery.coulomb,\n        name: \"Charge\",\n        role: \"value.battery\",\n        type: \"number\",\n        readonly: true,\n        unit: \"%\",\n        min: 0,\n        max: 100\n    },\n    {\n        id: \"capacity\",\n        value: battery.capacity,\n        name: \"Capacity\",\n        role: \"value\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mAh\",\n        min: 0\n    }\n];\n\nconst messages = [];\n\nfor (const state of states) {\n    const out = {\n        topic: `0_userdata.0.pytes.06.${batteryId}.${state.id}`,\n        payload: state.value,\n\n        stateName: state.name,\n        stateRole: state.role,\n        stateType: state.type,\n        stateReadonly: state.readonly\n    };\n\n    if (state.unit !== undefined) {\n        out.stateUnit = state.unit;\n    }\n\n    if (state.min !== undefined) {\n        out.stateMin = state.min;\n    }\n\n    if (state.max !== undefined) {\n        out.stateMax = state.max;\n    }\n\n    messages.push(out);\n}\n\nreturn [messages];",
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        "name": "",
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        "x": 890,
        "y": 900,
        "wires": [
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                "56d333a3d08a8b60"
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        "type": "function",
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        "func": "const text = msg.payload;\n\nif (typeof text !== \"string\") {\n    node.error(\"msg.payload ist kein String\", msg);\n    return null;\n}\n\n// In einzelne Zeilen zerlegen\nconst lines = text\n    .split(/\\r?\\n/)\n    .map(line => line.trim())\n    .filter(line => line !== \"\");\n\n// Nur Zeilen berücksichtigen, die mit einer Batterienummer beginnen\nconst dataLines = lines.filter(line => /^\\d+\\s/.test(line));\n\nconst messages = [];\n\nfor (const line of dataLines) {\n\n    // Spalten sind durch mindestens 2 Leerzeichen getrennt\n    const columns = line.split(/\\s{2,}/);\n\n    if (columns.length < 9) {\n        node.warn(\"Zeile konnte nicht verarbeitet werden: \" + line);\n        continue;\n    }\n\n    const battery = {\n        battery: Number(columns[0]),\n        volt: Number(columns[1]),\n        tempr: Number(columns[2]),\n        baseState: columns[3],\n        voltState: columns[4],\n        currState: columns[5],\n        tempState: columns[6],\n        coulomb: Number(columns[7].replace(\"%\", \"\")),\n        capacity: Number(columns[8].replace(/[^\\d]/g, \"\"))\n    };\n\n    messages.push({\n        ...msg,\n        payload: battery\n    });\n}\n\n// Alle Nachrichten nacheinander über denselben Ausgang senden\nreturn [messages];",
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    {
        "id": "8dc1347bba1166d9",
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        "name": "function 8",
        "func": "const battery = msg.payload;\n\nif (!battery || battery.battery === undefined) {\n    node.error(\"Ungültiges Battery-Objekt\", msg);\n    return null;\n}\n\nconst batteryId = battery.battery;\n\nconst states = [\n    {\n        id: \"voltage\",\n        value: battery.volt,\n        name: \"Voltage\",\n        role: \"value.voltage\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mV\",\n        min: 0\n    },\n    {\n        id: \"temperature\",\n        value: battery.tempr / 1000,\n        name: \"Temperature\",\n        role: \"value.temperature\",\n        type: \"number\",\n        readonly: true,\n        unit: \"°C\"\n    },\n    {\n        id: \"baseState\",\n        value: battery.baseState,\n        name: \"Base State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"voltageState\",\n        value: battery.voltState,\n        name: \"Voltage State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"currentState\",\n        value: battery.currState,\n        name: \"Current State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"temperatureState\",\n        value: battery.tempState,\n        name: \"Temperature State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"charge\",\n        value: battery.coulomb,\n        name: \"Charge\",\n        role: \"value.battery\",\n        type: \"number\",\n        readonly: true,\n        unit: \"%\",\n        min: 0,\n        max: 100\n    },\n    {\n        id: \"capacity\",\n        value: battery.capacity,\n        name: \"Capacity\",\n        role: \"value\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mAh\",\n        min: 0\n    }\n];\n\nconst messages = [];\n\nfor (const state of states) {\n    const out = {\n        topic: `0_userdata.0.pytes.07.${batteryId}.${state.id}`,\n        payload: state.value,\n\n        stateName: state.name,\n        stateRole: state.role,\n        stateType: state.type,\n        stateReadonly: state.readonly\n    };\n\n    if (state.unit !== undefined) {\n        out.stateUnit = state.unit;\n    }\n\n    if (state.min !== undefined) {\n        out.stateMin = state.min;\n    }\n\n    if (state.max !== undefined) {\n        out.stateMax = state.max;\n    }\n\n    messages.push(out);\n}\n\nreturn [messages];",
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        "nbRateUnits": "1",
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        "wires": [
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                "dfa2e714a883320c"
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    {
        "id": "dfa2e714a883320c",
        "type": "function",
        "z": "26771494c726dd85",
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        "func": "const text = msg.payload;\n\nif (typeof text !== \"string\") {\n    node.error(\"msg.payload ist kein String\", msg);\n    return null;\n}\n\n// In einzelne Zeilen zerlegen\nconst lines = text\n    .split(/\\r?\\n/)\n    .map(line => line.trim())\n    .filter(line => line !== \"\");\n\n// Nur Zeilen berücksichtigen, die mit einer Batterienummer beginnen\nconst dataLines = lines.filter(line => /^\\d+\\s/.test(line));\n\nconst messages = [];\n\nfor (const line of dataLines) {\n\n    // Spalten sind durch mindestens 2 Leerzeichen getrennt\n    const columns = line.split(/\\s{2,}/);\n\n    if (columns.length < 9) {\n        node.warn(\"Zeile konnte nicht verarbeitet werden: \" + line);\n        continue;\n    }\n\n    const battery = {\n        battery: Number(columns[0]),\n        volt: Number(columns[1]),\n        tempr: Number(columns[2]),\n        baseState: columns[3],\n        voltState: columns[4],\n        currState: columns[5],\n        tempState: columns[6],\n        coulomb: Number(columns[7].replace(\"%\", \"\")),\n        capacity: Number(columns[8].replace(/[^\\d]/g, \"\"))\n    };\n\n    messages.push({\n        ...msg,\n        payload: battery\n    });\n}\n\n// Alle Nachrichten nacheinander über denselben Ausgang senden\nreturn [messages];",
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        "id": "4127ce3ea3ebf45b",
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        "func": "const battery = msg.payload;\n\nif (!battery || battery.battery === undefined) {\n    node.error(\"Ungültiges Battery-Objekt\", msg);\n    return null;\n}\n\nconst batteryId = battery.battery;\n\nconst states = [\n    {\n        id: \"voltage\",\n        value: battery.volt,\n        name: \"Voltage\",\n        role: \"value.voltage\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mV\",\n        min: 0\n    },\n    {\n        id: \"temperature\",\n        value: battery.tempr / 1000,\n        name: \"Temperature\",\n        role: \"value.temperature\",\n        type: \"number\",\n        readonly: true,\n        unit: \"°C\"\n    },\n    {\n        id: \"baseState\",\n        value: battery.baseState,\n        name: \"Base State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"voltageState\",\n        value: battery.voltState,\n        name: \"Voltage State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"currentState\",\n        value: battery.currState,\n        name: \"Current State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"temperatureState\",\n        value: battery.tempState,\n        name: \"Temperature State\",\n        role: \"text\",\n        type: \"string\",\n        readonly: true\n    },\n    {\n        id: \"charge\",\n        value: battery.coulomb,\n        name: \"Charge\",\n        role: \"value.battery\",\n        type: \"number\",\n        readonly: true,\n        unit: \"%\",\n        min: 0,\n        max: 100\n    },\n    {\n        id: \"capacity\",\n        value: battery.capacity,\n        name: \"Capacity\",\n        role: \"value\",\n        type: \"number\",\n        readonly: true,\n        unit: \"mAh\",\n        min: 0\n    }\n];\n\nconst messages = [];\n\nfor (const state of states) {\n    const out = {\n        topic: `0_userdata.0.pytes.08.${batteryId}.${state.id}`,\n        payload: state.value,\n\n        stateName: state.name,\n        stateRole: state.role,\n        stateType: state.type,\n        stateReadonly: state.readonly\n    };\n\n    if (state.unit !== undefined) {\n        out.stateUnit = state.unit;\n    }\n\n    if (state.min !== undefined) {\n        out.stateMin = state.min;\n    }\n\n    if (state.max !== undefined) {\n        out.stateMax = state.max;\n    }\n\n    messages.push(out);\n}\n\nreturn [messages];",
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        "console": false,
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        "complete": "false",
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    {
        "id": "d031dd424e7b1ff2",
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        "serialport": "/dev/serial/by-id/usb-FTDI_USB_Serial_Converter_FTFS8I5L-if00-port0",
        "serialbaud": "115200",
        "databits": 8,
        "parity": "none",
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Es ist äusserst interessant, ich habe heute mal die Schnittstellen durchreichung in den Iobroker Proxmox LXC neu, mit den offiziellen Proxmox Werkzeugen neu gemacht. Dabei ist mir aufgefallen, das der Flow mehrere male sauber läuft, plötzlich kommt die Meldung:

node-red.0
	2026-08-15 16:54:00.757	error	Node-RED: 15 Aug 16:54:00 - [error] [function:convert to msgs] msg.payload ist kein String

und auch im Flow wird dann beim entsprechenden Node aus einem "verbunden" ein "Timeout". Nach einem deaktivieren des ganzen Flow und deploy und anschliessendem aktivieren und deploy läuft er wieder ein paar Stunden ohne irgendwelche Probleme. Beim Fehler kommt scheinbar einfach keine Antwort mehr und der "function-Node" wirft dann den Fehler raus. Ist ja richtig und auch verständlich.

Kann es sein, dass es mit meiner vervielfachung auch quasi mehrere offenen Schnittstellen Task gibt?

Ich habe mich gefragt ob es allenfalls besser wäre trigger-Node so umzubauen das er eben nicht einfach nur den Text sendet, sondern das er quasi eine Liste mit den Texten abarbeitet. Oder das nach dem function Node ein zusätzlicher Node angestossen würde der die Schnittstelle schliesst? Nur da habe ich bis jetzt keinerlei Hinweise gefunden wie man eine solche serielle Schnittstelle schliessen kann.

[peterfido]

Ich habe das mangels Batterie nicht testen können.

Das Skript geht die Batterien nach und nach durch und startet automatisch wieder, wenn ich die Verbindung unterbreche.

Den Comport musste ich natürlich umbiegen.

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        "id": "79724f85531596e4",
        "type": "function",
        "z": "26771494c726dd85",
        "name": "convert to msgs",
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[OliverIO]

@andibr

Ich habe mir nochmal das Bild mit dem Node Flow und dem debug Screen rechts angeschaut.
Da gibt die debug node undefined aus.
Das ist natürlich kein String.
Dann müsste an den Anfang der function node sowas rein

if (msg.payload == undefined) return;

Das sorgt dafür das keine neue msg generiert wird, wenn keine auswertbare Information kommt.
Das filtert dann das aus.

Kann das leider nicht testen, da aktuell kein Node red verfügbar

[andibr]

@OliverIO
Danke für die Analyse und der grundsätzlichen Bestätigung, dass es eigentlich richtig ist und auch funktionieren sollte.
Unterdessen ist es so, dass ich den wiederholzykluss auf 20min gestellt habe und zwischen jeder Anfrage 1 Minute warte. Zusätzlich habe ich ja die udev-Regel entfernt und das Portweiterleiten mit den Proxmox eigenen Mitteln gemacht. Es läuft nun seit 25h so, und Fehler mit keinem String ist noch 2x aufgetreten, hat sich unterdessen aber sogar selber gefixt und läuft seither ohne erkennbar Fehlermeldungen durch.
Weil es ja so merkwürdig reagiert hat, habe ich den Pylontechadapter nochmals installiert und die neue Schnittstelle eingerichtet. Nach sehr langem warten wurde der Adapter sogar grün und er hat tatsächlich die BMS Infos rausgelesen, aber die Zelleninfos kamm nicht.

Ich habe zwar keine Ahnung wie das Pytes BMS Tool das wirklich macht, aber ich habe den Eindruck, dass der Abfragezyklus nicht mehr als 1x pro Minute gestartet werden darf. Das Pytes Tool bringt alle infis eigentlich recht schnell.
Bei meinem 12V System mit den DALI ist es so beschrieben, dass man nur 1x pro Minute Abfragen, kann weil der Prozessor sonst seine Aufgabe nicht machen kann.

Aktuell läuft es und ich beobachte das sehr intensiv, weil ich der Sache noch nicht ganz traue.

[mickym]

@OliverIO Wie meist, kann man das aber auch mit einer switch Node filtern und braucht dazu kein Javascript.

[OliverIO]

@mickym

Theoretisch schon
Bin gerade nicht am Rechner
Weiß nicht was man da auswählen kann
Irgend was mit

Ist
Oder
Ist nicht
Oder
Ist vom typ

Und bei Typ
Undefined

Dann einen Ausgang entsprechend der Logik verdrahten so das die undefined Message ins Leere läuft

[mickym]

@OliverIO Ich habe doch einen Screenshot gemacht. So kommen nur Strings durch. Kein undefined, Numbers etc., aber ich will mich da nicht in Eure Diskussion einmischen. Das ist ja nur ein Nebenschauplatz

[OliverIO]

@mickym
Wenn es String ist
Könnte auch
buffer
Sein
Kann mich nicht mehr erinnern

[mickym]

@OliverIO Man kann auch undefined an Ausgang 1 schicken und ins Leere laufen lassen und den Rest weiterverarbeiten:

[peterfido]

So wie @mickym schreibt, ist es doch in meinem Beispiel-Code weiter oben.