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djingis asked

v-sense data from BMV-712 to two SmartSolar 100/30 and Multiplus using Cerbo GX

I used to have a smaller system with a BMV-712 and one SmartSolar 75/15 connected to a 55W panel. Both the BMV and the SmartSolar was connected to the same bluetooth network so the SmartSolar could use the v-sense data from the BMV. I also have the new Multiplus 12/1200/50 with a VE.BUS port.


This winter I am adding a lot more solar and feel that the Multiplus is lacking a proper v-sense on the battery. I am replacing the SmartSolar 75/15 with two SmartSolar 100/30, each connected to a 390W panel (total of 780W solar).


The new SmarSolar MPPT:s will be further away from the BMV-712 then the old SmartSolar and I am worried about the Bluetooth network connectivity.


If I add the Cerbo GX can I connect the BMV-712 (VE.Direct), the two SmartSolar 100/30 (VE.Direct) and the Multiplus (VE.CAN) and have both the SmartSolar and the Multiplus get v-sense data from the BMV-712?

cerbo gxVE.Smart Network
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nebulight answered ·

With DVCC enabled you can do shared Voltage, Current and Temp sense to all devices on the network as long as they are plugged into the Cerbo. Check out the manual here about DVCC:

https://www.victronenergy.com/live/ccgx:start#dvcc_features_for_all_systems

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djingis avatar image djingis commented ·

It was after I read the manual that I felt that I needed to post a question here @nebulight

Maybe I am misunderstanding the manual... When I read the manual I get the impression that even though there is three physical VE.Direct ports on the Cerbo GX, only two ports can be used for the BMV-712 and the two SmartSolar 100/30.

In section 2.4.2. Battery Monitor BMV-700 series; and MPPTs with a VE.Direct port
"Either one or two compatible products can be connected directly to the Cerbo GX using a standard VE.Direct cable"


There are several if's and but's regarding VE.Direct via USB or via CAN as well as I think it is strange that only two VE.Direct devices can be connected when there are three ports.

My hope was that this was an early version of the manual and it still needed to be corrected regarding the number of VE.Direct devices.

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