Hi, is it possible to establish communication between a MultiPlus-II GX 48/3000/35-32 and a Shelly Pro EM-50 via Modbus TCP, or is it necessary to use any external hardware? Thanks
The standard multiplus does not talk to the outside world, it only has VE.bus communications.
EDIT: The Multiplus-II GX already has Cerbo capabilities built in, sorry.
A Cerbo GX or Ekrano or Raspberry Pi running VenusOS is typically used to talk to the multiplus and other devices through Ethernet, RS-485, etc., and to act as a central controller.
However, the Shelly Pro EM-50 will require a custom driver. Someone may have done that in the modifications section here, search for it.
I own an EM-50, and have written a crude emulator of another energy meter that wraps the EM-50, but it only communicates power, nothing else.
So I think the best solution is to use a MultiPlus-II 48/3000/35-32 (NON-GX) together with a Cerbo GX. Will this give me more options than the MultiPlus-II GX?
Oh sorry, I missed that you had the GX variant, the Cerbo equivalent GX is built in!
My eyes are not what they used to be
You should already have what you need.
Here is an old thread on doing a custom driver: