Thanks,
this has been working! Over Ethernet… No WiFi anymore.
As I read on another forums - they ended support for Modbus TCP over WiFi with latest firmware.
New reply from SolarEdge support:
the escalation has been returned from our Tier2.
Unfortunately also our Tier2 told me that Modbus over TCP can be done through LAN or RS485 only.
There is not possible to have it over Wi-Fi and if there is some way how to do it we do not support it.
Thank you for your understanding.
So now on, Ethernet only. Maybe we should start to send some more tickets to SE support 