Victor Max 10.2Kw + jk bms conection (jk_B1A20A1635)

[fastvd]

Greetings. I have such a Victor Max 10.2Kw hybrid inverter at home, it has been working for more than 6 months. It works with self-assembly of batteries and JK BMS(jk_B1A20A1635 , HW v11A, SW v11.54 ). From the inverter and from the bms I extract the data+control using esp32 boards, one board for the inverter (rs-232--->TTL--->esp32)and one board for the BMS(TTL--->esp32).
In principle, everything satisfies me, but I still want to use the inverter's functionality, namely the RS485 port that is in the inverter, so that it communicates directly with the BMS.
There is very little information on the Internet about the inverter itself, but I saw that it can still be connected to the inverter BMS via the same RS485 (it reminds me of the regular version)
If I take my laptop, switch the BMS to RS485 mode, and connect to the laptop with a USB2RS485 dongle, I get data, but my inverter doesn't want to pair with my BMS.
I see several possible options:
1) I use the wrong pinout (tried 1, 2, 8 pins and 3, 5, 8 pins on RJ45)
2) my BMS has a firmware that is not compatible with the inverter or transmission speed
3) incorrect settings of the inverter (tried LIL and LIP mode, waited 2-3 minutes after changing the mode, but nothing happened)

Where should I dig and is it even possible on my version of BMS?

 

[Spok86]

hello
you can try that :

S

Post in thread 'JK inverter BMS and Voltronic/Phocos Inverter communication'

Feb 23, 2025

WOOOHOOO It's working !

JK Inverter BMS to Anern MAX 10200 RS485

JK Inverter BMS to Anern MAX 10200 RS485. GitHub Gist: instantly share code, notes, and snippets.

gist.github.com

It's not my video

Anern 10.2Kw < BMS JKPB2A16S20P

• Spok86

 

[Hjallis]

Greetings. I have such a Victor Max 10.2Kw hybrid inverter at home, it has been working for more than 6 months. It works with self-assembly of batteries and JK BMS(jk_B1A20A1635 , HW v11A, SW v11.54 ). From the inverter and from the bms I extract the data+control using esp32 boards, one board for the inverter (rs-232--->TTL--->esp32)and one board for the BMS(TTL--->esp32).
In principle, everything satisfies me, but I still want to use the inverter's functionality, namely the RS485 port that is in the inverter, so that it communicates directly with the BMS.
There is very little information on the Internet about the inverter itself, but I saw that it can still be connected to the inverter BMS via the same RS485 (it reminds me of the regular version)
If I take my laptop, switch the BMS to RS485 mode, and connect to the laptop with a USB2RS485 dongle, I get data, but my inverter doesn't want to pair with my BMS.
I see several possible options:
1) I use the wrong pinout (tried 1, 2, 8 pins and 3, 5, 8 pins on RJ45)
2) my BMS has a firmware that is not compatible with the inverter or transmission speed
3) incorrect settings of the inverter (tried LIL and LIP mode, waited 2-3 minutes after changing the mode, but nothing happened)

Where should I dig and is it even possible on my version of BMS?

Are you sure that the BMS and the inverter have the same protocol? I am working with the same problem with Sumry RS7000 and JBD BMS.
Zumry can use two procols PACE and PYLON and the BMS has the same as JK. I will use ESP32 S3 to translate the protocol. It is still a project but I am working with it. The program is ready but I need the hardware.