I am about to install a grid tied Fronius AC PV inverter to a Victron Multiplus 2 ESS system with Pylontech batteries.
The original plan was to use one Energy meter ET112 and a network connection to the Fronius. My supplier has said there can be issues with a system set up this way. See explaination below:
For the Fronius to appear on the Cerbo, they need to be on the same LAN subnet and that requires the local LAN router to be operating even if there is a power failure. SOmetimes the networking causes them to stop talking and it needs reinitialising. And all manner of networking issues. An energy meter with a direct cable is always more reliable.
Would I therefore be better using 2 energy meters ET112’s and forgetting about the network connection. This would also mean I could order the non WLAN Fronius, which is a bit cheaper?
Any thoughts or experiences appreciated.