If I have a cerbo gx with everything connected via ve.direct, I’ve heard you don’t need to create a ve. smart network.
Is this correct?
You are correct. On the Cerbo you can use DVCC to share voltage, temperature and voltage signals from the battery monitor to the connected devices so you do not need VE Smart Networking. Tje only thing you may mis out on is synchronised charging with lead acid batteries, but if you have lithium batteries with a communicating BMS then DVCC should do this.
Do not enable VE Smart Networking at the same time as having wired connections. There are many reports of unexpected behaviour with both running.
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@pwfarnell it’s obvious you really know your onions. Can I pick your brains related to the subject matter of this post. The comms behaviour between my MPPT and Orion has me scratching my head. My system works but I’d like to have a better understanding.
I have VE.Direct connections between my Cerbo GX and the MPPT, Orion and Smart shunt.
Initially I also, erroneously had a smart network between these items. In truth the system worked fine.
Having read that having the two comms paths in tandem can be problematic, I deleted the smart network.
The chargers now seem to end there charge at a lower voltage than they should. Its only 200mV or so but it annoys me. It’s obviously the V drop and the the MPPT is presumably using the V it sees rather than that communicated by the Smart Shunt.
Because of the latest UI beta updates I started to look at DVCC, which I have now enabled but only for V, I & T sense, not charge control as I want the charge parameters I have set on my chargers because of the NMC batteries I use.
Am I right in saying that if it still stops short, I am OK to deactivate DVCC and reinstate the smart network and that because the DVCC is disabled that I am not infact running comms in tandem and that the Cerbo is in that configuration only acting as a monitor and amending settings?
Because of the
On DVCC you need to turn it on and then specifically choose the Smartshunt as the source of the voltage and current readings. Then it should share the correct readings from the Shunt and compensate for voltage drop or inaccurate readings the same as when Smart Networked. This worked fine for me when I had lead acid and only V, I and T sense as well as with the fully controlled lithiums.
The advice re wired and Bluetooth networks is not hard and fast, it works OK for some people but not for others.
If it works for you then use it, just be aware if you get odd things then it may be the dual comms.
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