RandomPower

I will try the SBU and option 12 approach, if that works then I will stay on the current firmware unless there is a major security vulnerability or new feature set.

@hoohloc Thank you for this clarification. I have set it to SBU and I will monitor the system.

Hello Forum members I am new to solar, I went live with my system last week. My setup and BMS is working, and I have solar as the 1st priority. (I think 01=SBU may work better and then program 12 & 13 might work) 01=SOL 01 02=29A 03=APL 04=SdS 05=LI 06=restart disabled 07=Restart disabled 08=230v 09=50Hz 10=4 11=30A 12=30% 13=75% 14=CS0 14 15=bON 16=LON 17=AON 18=bYd 19=53.2v 20=53.2v 21=20% 22=SbE 28=1 43=E9 dl5 44=58.4v 45=60 46=120 47=30 48=tOF Currently : The system runs on battery during the day if charged above 95%, if it drops below 95%, then the solar kicks in and charges the battery and feeds the load At night, if the battery drops below 95%, then utility kicks in, charges the battery and feeds the load. I want the system to do the following : During the Day, feed the load on solar all day, use battery if load exceeds what solar can provide. At night, run on battery, if the battery drops to 30% during the night, then use utility to charge. Is this possible?

Hello This may help you without firmware updates. Thanks to @j5_immortal I bought the same setup as you and setup my system last week. I managed to get the BMS communicating without any firmware updates. The problem for me was the coms cable, I was told it should be a straight RJ45 ethernet cable, but this does not work. You need to use a crossover cable, PIN 1-3 on Inverter side and PIN 6-8 on Battery side This is for transmission, receive and ground. You do not need to wire the rest of the PINS I just modified the diagram below to make it clearer and to show what colours I used for the Ethernet cable (CAT 5 / CAT6) As long as you use the same colour for PIN 1 to 8, 2 to 7 and 3 to 6, it will work. You can go to matrixwarehouse and ask the guys there to make you a custom cable. I asked for a 3m cable as it was all I needed. On the inverter side I connected the cable to the BMS port and on the Master Battery I connected it to the B/RS485 port Then just make sure to follow the guide below, I chose LI for program 5, and then LI 004 and 36. Press enter after changing LI to 004 (You will press enter after each digit has been updated, to move to the next digit, and after pressing enter after "4", then it will move to 36 I think this saves it, just press return to main menu and then go back to check if the settings are saved for program 5 It took about 5 seconds to start working for me.