[HowTo] Huawei SUN2000 WR Modbus mit node-red (read + write)

[badsnoopy667]

@atifan
Theoretisch geht das. Es gibt Modbus Register dafür. Praktisch ist das so kompliziert und schlecht dokumentiert, das wird nix befürchte ich.

[leonundjulie]

@badsnoopy667 Moin, moin, sonnige Grüße von der Küste. Ich habe gestern umgesetzt was in der Anleitung steht - aber leider ohne den erhofften Erfolg.

Ich meine alles gemacht zu haben was hier steht:

• User ID auf 1 gesetzt .. so wie es in meinem WR eingestellt ist
• ich kann den WR anpingen
• MOD-TCP ist im WR auch entsprechend der Vorgaben gesetzt

Nach dem Stoppen und Starten von NodeRed werden die Objekte nicht angelegt, die Kommunikation startet nicht und folgendes lese ich im Protokoll. Was habe ich vergessen oder falsch gemacht?

[Christof Lewandowski]

@atifan
Danke. Habs jetzt mit dem modbus-proxy "gelöst". Damit kann mein Solarmanager UND node-red Daten per ModbusTCP abgreifen.
Gestern liefs zumindest noch, heute möchte Node-red den Flow nicht mehr starten...

[SvenH75]

@badsnoopy667 Hallo, vielen Dank für die Anleitung, habe es eingerichtet und es funktioniert (Node-red Anfänger). Es werden nur nicht alle Werte erfasst. Im Node-red sind die Kästchen heller….. Ist das normal? Die wichtigsten Werte sind ja vorhanden…… ich hänge es mal als Bilder an, sollte hoffentlich zu sehen sein…….

Vielen Dank

[badsnoopy667]

@svenh75
die helleren Kästchen sind deaktiviert. Ich glaube da kann man drauf klicken und dann unten in der Ecke auf aktivieren oder so klicken.

[SvenH75]

@badsnoopy667 Dankeschön, genau so ist es

[harald0708]

Hallo zusammen. Ich habe zwei SUN2000 und eine Luna2000. Darf ich mir eine Node von Euch runterladen, damit ich die dann an meine Anlage anpassen kann? Bin Node-RED-Anfänger. Muss leider auch blöd Fragen: Wie kann ich denn eine Node runterladen? Vielen herzlichen Dank im voraus.

[badsnoopy667]

@harald0708
Du musst den Flow aus Post 1 runterladen und in node-red importieren. Das ist eine Textdatei.
Dann kannst du die Nodes (also die kleinen bunten Kästchen), die sich in diesem Flow befinden, anpassen wie im Post 1 beschrieben (also mit der Unit-ID usw.)

[stefanWidmann]

@badsnoopy667 Servus, das hab ich erledigt, bin mal so frech, und hänge mich an diese Frage dran. Wie kann ich jetzt dann die Werte im IOBroker verwenden? Brauche die Werte, dass ich meine Wallbox mit den Keba-connect adapter steuern kann. Bitte um Hilfe. danke und schönen Nachmittag

[mickym]

@stefanwidmann ??? in dem Flow schreibst Du doch die Werte über die iobroker-Out Nodes in Datenpunkte?

[harald0708]

@badsnoopy667 Vielen Dank für Deine Anwort. Leider stell ich mich so dämlich an. Wo ist der Post1 und wo kann ich den Flow runterladen? Bitte nochmals um Hilfe. Die Textdatei (Flow) in Node-Red importieren ist kein Problem.

[mickym]

@harald0708 Der erste Post ist der Älteste und lest ihr nicht?

[harald0708]

@mickym Danke für die Antwort. Ganz hochscrollen hat wohl nicht gleich funktioniert. Nun hab ich es gefunden und importiert. Vielen Dank.

[Christof Lewandowski]

@madmat17 said in [HowTo] Huawei SUN2000 WR Modbus mit node-red (read + write):

@a1uca2d

Das Thema mit den Abfragen kannst du auch anders umschiffen.
Du kannst mehrere Register auf einmal abfragen (ich habe zB in 2 Abfragen alles drinnen - da ein recht großer Adressbereich für mich nicht so interessant ist):

• Register 32000-32116:
  
  Die Abfrage triggert dann die zweite Abfrage
  

• Register 37000-37125:
  

Die Daten laufen dann durch einen edit puffer-parser node, werden in einem join-node zusammengefügt und (in meinem Fall) auf einmal in eine InfluxDB geschrieben:

Nur als Anregung bzw. Idee, wenn man den Overhead der Register-Anfragen reduzieren möchte.

Gruß,
Mat

Das sieht sehr interessant aus. Kämpfe auch gerade mit zu vielen Abfragen...Wie würde man denn in Node Red nun die Ergebnisse der Registerabfragen in die ioBroker Datenpunkte schreiben?

[mickym]

@christof-lewandowski sagte in [HowTo] Huawei SUN2000 WR Modbus mit node-red (read + write):

Wie würde man denn in Node Red nun die Ergebnisse der Registerabfragen in die ioBroker Datenpunkte schreiben?

Mit einer iobroker-Out Node. Das Topic enthält den Pfad zum Datenpunkt.

[Christof Lewandowski]

@mickym said in [HowTo] Huawei SUN2000 WR Modbus mit node-red (read + write):

@christof-lewandowski sagte in [HowTo] Huawei SUN2000 WR Modbus mit node-red (read + write):

Wie würde man denn in Node Red nun die Ergebnisse der Registerabfragen in die ioBroker Datenpunkte schreiben?

Mit einer iobroker-Out Node. Das Topic enthält den Pfad zum Datenpunkt.

Ein Beispiel hierzu wäre klasse

Eher dann aber zu den buffer-parser und join nodes. Die iobroker-Out Nodes sollten ja die selben wie aus den mehrfach verlinkten Flows hier sein.

[mickym]

@christof-lewandowski Du - dann musst Du ein konkretes Beispiel liefern. Stelle hier in CodeTags das ein was aus einer Modbus Node rauskommt und was Du dann in einen Datenpunkt schreiben willst - also wie das aussehen soll. Die Join Node brauchst du nicht unbedingt.

Mehrfache Analysen kannst bereits in einem Objekt zusammenfassen, wenn Du den parser entsprechend konfigurierst.

Beispiele zu den Buffer-Nodes werden in Beispielen bereits mitgeliefert.

Hier noch ein paar Beispiele, die ich mir selbst gemacht habe, um das Ganze zu verstehen;

Spoiler

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       "name": "Rückkonvertierung aus Int16 Arrray",
       "active": true,
       "tosidebar": true,
       "console": false,
       "tostatus": false,
       "complete": "payload",
       "targetType": "msg",
       "statusVal": "",
       "statusType": "auto",
       "x": 1020,
       "y": 340,
       "wires": []
   },
   {
       "id": "c49d8a32b00d9e38",
       "type": "buffer-parser",
       "z": "0662713ffc076361",
       "name": "",
       "data": "payload",
       "dataType": "msg",
       "specification": "spec",
       "specificationType": "ui",
       "items": [
           {
               "type": "floatbe",
               "name": "item1",
               "offset": 0,
               "length": 1,
               "offsetbit": 0,
               "scale": "1",
               "mask": ""
           }
       ],
       "swap1": "",
       "swap2": "",
       "swap3": "",
       "swap1Type": "swap",
       "swap2Type": "swap",
       "swap3Type": "swap",
       "msgProperty": "payload",
       "msgPropertyType": "str",
       "resultType": "value",
       "resultTypeType": "return",
       "multipleResult": true,
       "fanOutMultipleResult": false,
       "setTopic": false,
       "outputs": 1,
       "x": 770,
       "y": 340,
       "wires": [
           [
               "cb9cb4b958d69dbb"
           ]
       ]
   },
   {
       "id": "b7efada9296433bd",
       "type": "comment",
       "z": "0662713ffc076361",
       "name": "parser Node kann auch mit Int16 Array arbeiten",
       "info": "",
       "x": 460,
       "y": 340,
       "wires": []
   }
]

Ich empfehle Dir auch diesen Thread - in dem alles im Detail anhand von Beispielen erklärt wird:

https://forum.iobroker.net/topic/65273/node-red-modbus

[leonundjulie]

Guten Morgen @ple

ich habe Deinen Flow importiert. Die Datenpunkte zum Dongle wurden angelegt und Werte kommen im iOBroker an.

Aber beim zweiten Pfad tut sich nichts. Es werden keine Datenpunkte angelegt und es kommen auch keine Werte an.

Hast Du eine Idee?

Liegt es daran, dass ich nur zwei Strings habe? Was für einen WR nutzt Du - ich habe einen SUN2000 6KT1 ….. werden die richtigen Register abgefragt.?

LG
Andreas S.

[leonundjulie]

@ple, ich habe dann mal weiter recherchiert, denn leider sehe noch immer keine Werte für den unteren Teil des Flows :-(.

Herausgefunden habe ich, dass der obere Teil auf die Register zugreift, die auch in diesem Dokument beschrieben sind SDongle MODBUS TCP Guide https://www.photovoltaikforum.com/core/attachment/260120-sdonglea-05-modbus-tcp-guide-pdf/

Die Register, die im unteren Teil verwendet werden, sind im folgenden Dokument beschrieben Solar Inverter Modbus Interface Definitions (V3.0)
https://www.photovoltaikforum.com/core/attachment/180219-solar-inverter-modbus-interface-definitions-v3-0-pdf/.

Da die Dokumente auch für meine Hardware zutreffen, sollten die im Flow verwendeten Register alle richtig sein …. aber trotzdem kommt zum unteren Teil, dem zweiten und dritten Trigger nichts an. Warum geht es bei anderen? Warum geht es bei mir nicht?

[ple]

@leonundjulie
Puh, ist schon ein wenig her bei mir. Hier mal mein aktueller Flow.
Wie du schon erkannt hast, habe ich für den oberen Teil die Adressen direkt vom Dongle genommen, mit der neusten Software kann man die auch schneller abfragen.
Der untere Teil betrifft nur den Inverter, da musst du die passenden Strings wählen. Kann sein, dass dein WR andere verwendet.
Meine Hardware besteht aus KTL30-m3, powersensor und dongle.

flows (1).json