Alfen modbus error / load balancing

[kebui]

Hi all,

I'm struggling with getting EVCC up and running with my Alfen Eve Single S-line, while maintaining the load balancing capability. Previously my Alfen Eve was set to monitor the P1 port of my smart energy meter. Based on the docs I switched that to Energy Management System. However what I found is that I then loose the load balancing capability. My connection to the grid consists of 3 phases, each protected by a 25A breaker switch. I put this to the test by charging my vehicle and at the same time turn on the oven and heatpump and I see it's easily getting 30A on L3. Previously my Alfen Eve would then slow down to bring the load around 25A on L3. It would then show: "Load Balancing Limited". It kinda makes sense as I couldn't really find where in EVCC specify the specs of the grid connection, hence it doesn't know when to slow down.

Now when I configure the Alfen Eve as EMS + Meter monitoring as shown below, I do get the load balancing capability back. However, EVCC now keeps throwing errors like:
Alfen: switch phases: modbus: exception '1' (illegal function), function '6'
heartbeat: modbus: exception '1' (illegal function), function '16'

Should I be concerned about these errors? I'm not really sure what they mean. And is my assumption correct the EVCC does not (yet?) support load balancing? Or did I miss something?

Any help is greatly appreciated!

[ddeconin-gh]

Same problem here. Did you ever get it working?

[Lightmanster]

Yes . Evcc has Loadbalance now. Goto https://docs.evcc.io/en/docs/features/loadmanagement
Works fine with my alfen station

[kebui]

Same problem here. Did you ever get it working?

Yes, turns out that when you set Alfen to EMs (Energy Monitoring System) only, almost all of the modbus errors go away. Now with load balancing integrated in EVCC I'm happy to set it to EMS only. Have it running for I think two months now without any issues :)