In mean time upgraded to openhab 4.1.0 stable. on Raspberry PI
My setup consists of:
1/ SMA Homemanager 2.0: SN1, multicast 239.12.255.254, port 9522, ip: 192.168.2.52
2/ SMA Energymeter 20: SN2, multicast 239.12.255.253, port 9522, ip: 192.168.2.53
3/ SMA Energymeter 20: SN3, multicast 239.12.255.252, port 9522, ip: 192.168.2.54
I still get one of the following errors every 1 to 5 minutes (see post above) from every meter:
Unexpected payload received for group 239.12.255.254:9522
Unexpected payload received for group 239.12.255.253:9522
Unexpected payload received for group 239.12.255.252:9522
with: Received frame with wrong protocol ID
I also see that the associated power/energy items are updated with after a delay of 15-20minutes.
Please help. I am willing to verify any update of the binding or the settings.
The official release smaenerymeter binding does not have a delay, but still yields unplausible values as described earlier.