question

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Cerbo GX & SmartSolar MPPT communication problem

Hello,

I've got small issue with communication beetwen mppts and cerbo.

10 mppts are connected to cerbo by ve.can.

MPPTs got their own unit ID : from 1 to 9 so thats ok, but the last mppt got unit ID 100 - same as the

com.victronenergy.system .

mppt.png

I dont know it is correct.

I'm a commisioner and thats my first time with mppt.

I want to communicate cerbo with automation server by modbus tcp.

Unit ID is slave addres of device for modbus, right ?

MPPT Controllerscerbo gxModbus TCPVE.Can
mppt.png (26.1 KiB)
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2 Answers
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wkirby answered ·

Yes, unit ID 100 is OK for one of them. That would be the slave address in ModbusTCP connections.

My system:

1643108896965.png



1643108896965.png (39.6 KiB)
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Alos, an example of a ModbusTCP request from an external application:

1643109393600.png

Requesting PV power from two different charge VE.Can controllers.

1643109393600.png (16.6 KiB)
mac-1 avatar image
mac-1 answered ·

Thank you!

How many mppts could be connected to cerbo by ve.can?

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