curto

CEF,
OK from what i can see PV Master sends out a single 48899 query on UDP Broadcast and then waits for a maximum of 10 seconds for inverters to respond.
 
If during that time your inverter did not see the broadcast and has not responded then it is not listed in the set of Available inverters. In my case i have 3 of them - in many cases using the App i will only get two of them listed and then if i want to work on the other one i have to exit the app and start again.
You missed my point re static addresses - why not the first time they find an inverter as would you like to remember this - from then on it is there rather than having to do this stupid stuff.
Craig
 

No scrub that last comment - the LAN dongles appear to work OK - but there is one big issue (if you have multiple inverters). 
 
Unlike the WIFI adapters when PV Master does the initial broadcast query to discover all inverters on port 48899 - the LAN units respond with a generic HF_E20 (which is the maker High FLying Shanghai Corp) so if you have 3 inverters like i do - you can not tell them apart - just have to select one and continue on - if it is the wrong unit thn back to main screen - wait for the discovery and try another.
BUT - the screen is randomly populated based on which unit responds first so with 3 inverters i can be sitting there for 10 minuts trying to jump in and out
I reinstalled one of the WIFI adapters last night and the presentation in PV Master is much better with at least the serial number tacked onto the end.
I have seen this drop off the network behaviour with the LAN modules also - i believe it is when you send an incorrect request/config to the unit - they go into some sort of reset state for a couple of minutes
Craig