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Michael Timler avatar image
Michael Timler asked

CCGX - DVCC -> How to Limit Charge Voltage using ModBus-TCP

I've noticed the addition in DVCC the ability to limit the managed battery charge voltage to a value of my liking. I am very happy, that this is finally possible now.
Now, I would like to set this maximum charge voltage using Home Assistant.

Inside my Modbus TCP services, I have access to com.victronenergy.systems.
According to CCGX-Modbus-TCP Register-list.xlsx, the only writing-enabled registers com.victronenergy.systems are the CCGX-relay-states.

Is there any possibility set the Maximum Charge Voltage per Modbus TCP from Home Assistant? If yes, what is the register of this service?

ESSCCGX Color ControlModbus TCPDVCC
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Michael Timler avatar image Michael Timler commented ·
Nobody out there?
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netrange avatar image netrange Michael Timler commented ·

https://www.victronenergy.com/support-and-downloads/technical-information ... There You get the modbus-tcp list ...

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mrhappy avatar image
mrhappy answered ·

Did you try this one?

chargelimit.png


chargelimit.png (80.7 KiB)
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shaneyake avatar image shaneyake commented ·
Address 2705 is charge current, 2710 is Limit Managed Voltage.
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Michael Timler avatar image Michael Timler commented ·

Thank you for this hint! The voltage solution works meanwhile perfect for me, but for my personal interest I will test, if one can work with limiting the current in a similar way.

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shaneyake avatar image
shaneyake answered ·

@Michael Timler It was just fixed, it was a read only register. It is now writable.
It will take sometime to reach the public release for GX firmware but it is in the works. Not too long now. It is address 2710 with a scale factor of 0.1V
https://github.com/victronenergy/venus/issues/849

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Michael Timler avatar image Michael Timler commented ·
Thanks, this answered the question!
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shaneyake avatar image shaneyake Michael Timler commented ·

Fix is now available. Firmware v2.80~17
https://community.victronenergy.com/questions/101754/venus-os-v28017-available-or-testing.html

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