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charl-de-bruyn avatar image
charl-de-bruyn asked

How to set ESS mode via modbus

I want to control when to use keep batteries charged and optimized for battery life via modbus, what register can I set to switch between this exactly like the portal does ?


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ESSCCGX Color Control
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3 Answers
nickdb avatar image
nickdb answered ·

If you google “victron modbus register” you will get a link to the doc.

This is also easily done via node red.

https://www.victronenergy.com/download-document/6195/CCGX-Modbus-TCP-register-list-2.80.xlsx

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charl-de-bruyn avatar image charl-de-bruyn commented ·
Thanks, already got that, what I can't figure out which writable register sets the correct settings ?
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neuer-user avatar image
neuer-user answered ·

Same problem here. I did not find the setting in node red either.

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sebdehne avatar image
sebdehne answered ·

I think it is a combination of:
- register 2902 (/Settings/Cgwacs/Hub4Mode)
- register 2900 (/Settings/CGwacs/BatteryLife/State)

Try chaging the parameters in the VRM-portal and you should see the values in 2900 and 2902 changing.

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