Configuring Setpoint on Multiplus II via MK3-USB

I am using a Raspberry Pi setup to connect via MK3-USB to my MulitPlus II.

Now I am looking for a possibility to configure the AC power setpoint via software.

Is there a solution with Venus OS or by direct serial commands as described here: https://www.victronenergy.com/live/ess:ess_mode_2_and_3#using_the_mk3_directly_instead_of_via_gx_device

Or do I really need to buy the CCGX or Venus GX, and if yes, what is it, that makes the functional difference? My Raspberry can already collect all required data (energy meter, battery state).

When reading the RAM IDs from the MultiPlus, no HUB4 Assistant register (i.e. ID=3) is found.

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nickdb ♦♦ commented · Sep 03, 2022 at 11:55 AM

Is there a reason you don't want to run the full venus OS on your PI?

The post is a little confusing and the setup sounds complex.

To be clear, you are referring to the ESS grid setpoint?

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odan nickdb ♦♦ commented · Sep 03, 2022 at 04:18 PM

Yes, I mean the ESS grid setpoint (or some other functionality making the MPII outputting power to its AC-IN (grid) connection).

There is no reason for a specific venus OS - I thought, I would already have the "full venus OS", but I do not know, how to find out. I am using the image "venus-image-raspberrypi2-20220715122828-v2.89.rootfs.wic.gz".

In the settings I am not able to activate ESS and also do not see any "HUB4".

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