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modbus communcation error
#1
Hello everyone ! 
I face an issue with modbus commmunication with a heat pump. I atttach you the script and manual.
I checked it with the app "modbus polling", it works properly and I read data from the pump.

But via lm i have no communication.
Have you any idea about it ?

The json-profile:
{
    "manufacturer": "GREE",
    "description": "pump",
    "mapping": [
   
    {
    "name": "Water Tank Temperature",
    "datatype": "uint16",
    "type": "register",
    "address": 13,
    "unit": "°C"
    }
  ]
}

Attached Files
.pdf   Modbus Communication Protocol for Versati IV.pdf (Size: 1.84 MB / Downloads: 4)
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Messages In This Thread
modbus communcation error - by balatis - 27.08.2025, 09:03
RE: modbus communcation error - by Daniel - 27.08.2025, 09:50
RE: modbus communcation error - by balatis - 27.08.2025, 10:03
RE: modbus communcation error - by Daniel - 27.08.2025, 10:11
RE: modbus communcation error - by balatis - 28.08.2025, 08:40
RE: modbus communcation error - by Daniel - 28.08.2025, 09:05

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