Switching a relay on an MPPT charge controller using Node-Red on RPi

Thanks!

Even though I don’t have a BlueSolar but a SmartSolar MPPT 100/20 48V, the registers in the document you provide do work! In fact, I was using a wrong document.

For devices Document Link
VE.Direct with SmartSolar & BlueSolar: VE.Direct Protocol - BlueSolar and SmartSolar MPPT chargers - Rev18 https://www.victronenergy.com/upload/documents/BlueSolar-HEX-protocol.pdf
VE.Can & VE.Direct (non SmartSolar/BlueSolar but devices like Phoenix Inverter) use: VE.Can registers - VREGS - Victron Registers in NMEA 2000 – version 20 https://www.victronenergy.com/upload/documents/VE.Can-registers-public.pdf

   

I was able to turn the LOAD of my SmartSolar MPPT 100/20 48V to OFF using this:


 

Thank you very much! I hope the info we posted here would be an example for other people.

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