Stromzählerwert "INT32(3+3)" umrechnen

[TWW]

Hallo Zusammen.
Ich habe einen Modbus Stromzähler von B+G Tech DS100-00B. Die Spannungswerte kommen in Node-Red als "INT32(3+3)" rein. Wie wandle ich diese um damit ein sinnvoller Wert erscheint? Ich kein begnadeter Mathematiker.
Die Abfolge sieht so aus:
Rohdaten
01 04 04 00 03 73 09 EE B2

01 Device Adress
04 Functioncode
04 Anzahl der Antwortbytes

Register 4-Bytes HEX
00 03 73 09
DEC
Umgerechnet 226,057 (V)
EE Prüfsumme Hi
B2 Prüfsumme Lo
Bei vielen YT-Clips kommen die Werte aus anderen Zählern direkt heraus. Ich erwische aber einen Zähler der eine Weiterverarbeitung braucht.
Irgendwer hat das sicher schon mal gemacht und kann mir den Weg weisen...
Gruß

[TWW]

Gelöst: INT32 --> "(3+3)" bedeutet scheinbar nur 000.000
Also drei stellen vor und drei Stellen hinter dem Punkt (Komma)

[Steve-Mcl]

@TWW

Register 4-Bytes HEX
00 03 73 09
DEC
Umgerechnet 226,057 (V)

The buffer-parser node can help you do this (and much more) in a no-code way

Demo flow

[{"id":"6ff39d6e52909eed","type":"inject","z":"f504a58fa092fd5d","name":"Data [00,03,73,09]","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"[0,3,\"0x73\",9]","payloadType":"bin","x":890,"y":980,"wires":[["0d86f22f461b1632"]]},{"id":"0d86f22f461b1632","type":"buffer-parser","z":"f504a58fa092fd5d","name":"","data":"payload","dataType":"msg","specification":"spec","specificationType":"ui","items":[{"type":"uint32be","name":"voltage","offset":0,"length":1,"offsetbit":0,"scale":"/1000","mask":""}],"swap1":"","swap2":"","swap3":"","swap1Type":"swap","swap2Type":"swap","swap3Type":"swap","msgProperty":"payload","msgPropertyType":"str","resultType":"keyvalue","resultTypeType":"return","multipleResult":false,"fanOutMultipleResult":false,"setTopic":true,"outputs":1,"x":880,"y":1040,"wires":[["e23a086b03a3ed1c"]]},{"id":"e23a086b03a3ed1c","type":"debug","z":"f504a58fa092fd5d","name":"","active":true,"tosidebar":true,"console":false,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":910,"y":1100,"wires":[]}]

[TWW]

The problem is in front of the monitor. I only have to read the register of the electricity meter out of the user manual and work with the values .Then it works. I thought into the wrong and too complicated way.

Node-red-forum.json (5.7 KB)