Connect to Infinisolar / Axpert / MPP Solar Inverter

[hoelderlin2368]

We are looking for ways to connect to Infinisolar / Axpert / MPP Solar Inverters over the bms-to-inverter-project here. They are special in a way that they do not use the CAN bus port but RS485 on PIN 3 and 5 for BMS communication. We are currently testing MPP Solar Hybrid Model LVX 12KW WP. It does seem to support Pylontech protocol in principle but MPP is also offering their own propriatery protocol LIB and they seem to expect some sort of special messaging from the BMS to allow the communication to be activated. I can confirm this finding here: jblance/mpp-solar#219 since our test inverter doesn't like to listen to our Seplos BMS that should speak Pylontech protocol on RS485 and we can't even set the option Pylontech on the inverter since there is some sort of a message missing if you connect the cables.