Integrating Danfoss ECL 120 controller

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Hi,

I am trying to integrate a Danfoss ECL 120 controller that should have modbus over RS485 but I am not able to get any register values from the controller except PNU 4399 (Outside temperature) - but even that value is only returned as 0 degC. But at least I know that the modbus interface works and responds.

Does anyone have any experience with integrating this controller that could give me a few hints where to find information needed (e.g. PNU list)?? Or simply tell me to forget using modbus for the integration :slight_smile:.

The controller also has a LAN interface that is used for transfering data to Danfoss’ LeanHeat monitor servers that can be access via https. Maybe this could be integrated instead??

Thanks in advance…

Regards,
HassNewBee