Active power control

[solmoller]

We should add power control to the system, as negative prices become normal..

Here is the command to set inverter at 90%
Header

Header         Source Address Destination Address Control Code Function Code Data length Data0 Data1 Checksum
0xAA             2 Bytes               2 Bytes                     0x13                   0x20                 0x02          90      30        2 Bytes

Data1 is adjust time in seconds

Integration to HA the other way may pose an interesting problem

[henrykuijpers]

@solmoller Is there any specification sheet and/or documentation about the inverter? I sent an e-mail to SMA / Zeversolar, but they told me there is no specification of the protocol. How did you find out about this (nowhere documented?) command?

[henrykuijpers]

Also, integration to HA could be realized pretty easily, no? A slider could be added that defaults to 100%, that can be controlled. If one controls the slider, the Perl script should be able to catch that configuration (read mqtt for example?) and interact with the inverter to set the desired percentage.

I am very curious to know what more configurations / actions can take place with this inverter. It seems to have a lot of functionality, that is not visible at first sight. I thought it only had a button to scroll through a menu that contains very limited information. There is definitely, in the menu of the inverter, no option to set that power percentage, I think?

[solmoller]

Hi, send me a PM, and I'll find the factory documentation for you

[henrykuijpers]

@solmoller how can I send you a pm? I don't think GitHub has a pm functionality?

[solmoller]

Got what? ;-)