No Connection

[schnettker]

Hi,

your script looks very promising! But unfortunaly i can't get it to work.

In the logfile i found that:

2015-03-19 12:56:19,540 - DaemonLog - DEBUG - TCP: waiting for contact from inverter
2015-03-19 12:56:19,540 - DaemonLog - DEBUG - UDP:1300 sending welcome
2015-03-19 12:56:20,556 - DaemonLog - DEBUG - UDP:1300 closed
2015-03-19 12:56:39,565 - DaemonLog - DEBUG - no connection - retrying

I disabled my firewall and tcdump shows me, that the udp package was sended

IP 192.168.178.51.50048 > 255.255.255.255.1300: UDP, length 20

How can i solve my problem? What have i to fill in in monitor_solar.py as TCP_HOST? Why is SOLAR_HOST defined, but never used?

[AndreasHeger]

Hello @schnettker .

A disclaimer to start with - I put this together from several sources and with trial and error, I am not an expert in network communication and some of what I say below might not make much sense. I also did this a while ago and I forgot some of the details. The script also does need cleaning up to avoid confusion.

The communication between script and inverter starts by the former opening a TCP socket on the local host ('') and then sending out a UDP broadcast message which the SAMIL inverter will respond to. The communication then gets going from there. The variable SOLAR_HOST is superfluous.

I used wireshark to listen to the messages sent been my inverter (SAMIL, need to check exact version) and the software that comes with it. I don't know exactly what the first messages do and it might very well be that different versions of inverter require different responses.

Hope this helps, happy to help further.

[schnettker]

thank you for your help! Can you please tell me which distrubition you are using?

[AndreasHeger]

I am using raspbian.