This was about the undocumented 0x60, 0x61 CID2s. Did you find that the inverter was ever asking about these commands? Or was the battery just sending these arbitrarily (without being asked)? I'm writing a BMS and have been trying to use Pylontech over RS485. MY inverter (EG4 6000XP) never makes requests with these commands, but I'm wondering if I should just send them anyway. Though... when sending a response, the CID2 is typically a Return code (not a copy of the request CID2). Could you share the code you wrote that deals with Pylontech protocol? I'm working on this: https://github.com/danielbeardsley/tesla-bms-node/tree/main/src/inverter