S-Series Request data

[frankol]

hi, im trying to get the real time data faster than the 300s delay the inverter is sending it.

Ive got the documentation about the protocol but im not smart enough to get it running. Maybe it will help you too, since the inverters are pretty similar (The T-Series integration is working for the s-series too)

The cloud server can request data from the inverter with function code 11

Here is a sample string i sniffed

Header  function         request string           length                                       checksum        header end
7F:7F   11          C5:EC:C5:6C     00:06       01:04:27:74:00:18       6C:BF       F7:F7

Response:

Header  function           requet string            lengh       
7F:7F   91          C5:EC:C5:6C     00:33       01:04:30:E0:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:2A:F7:7C:08:00:10:00:20:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00    7A:36       F7:F7

i dont understand the numbers after the holding register part. 01 is the slave id, check 04 is the modbus holding register, check but what 27:74 and 00:18 mean?

i want all values but i dont know what i can send the inverter to get them

[LucasTor]

Hello @frankol, good to know the integration is working for you! To be honest, I kind of skipped over the requesting data part of the documentation, I just decoded the payload it sends periodically, I read somewhere you can configure the interval time, If I'm not mistaken up to once every 5s, but I'll make sure to have a look at that part and possibly add this to the integration as well Just for some context, are you using an Elfin EW11 as well? Thanks for letting me know about that!

[frankol]

Just for some context, are you using an Elfin EW11 as well?

No, i have connected a esp32 to the rs485 terminals of the included wifi adapter at the moment. But the s-series has a seperate rs485 port over a connector