China version connection problem

[xdilian]

Hello, I noticed that the seplos bms is very similar to the Boqiang bms in China. I tried to use the BatteryMonitor software to connect normally, but the esphome cannot connect normally. Can you help me to see what needs to be modified? I need to connect pack1 to get data， I will upload screenshots and data of both software.
Please take a look, thank you。

BatteryMonitor software：
DataRecord：
DataRecord_20230311_010145.xls
image：

Chinese version software：
pack#1
~ 2 6 0 0 4 6 4 2 E 0 0 2 0 1 F D 3 0 $
7E 32 36 30 30 34 36 34 32 45 30 30 32 30 31 46 44 33 30 0D
BMS response ok
~ 2 6 0 0 4 6 0 0 3 0 7 6 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 8 5 3 0 8 5 3 0 8 5 3 0 8 5 3 0 B A D 0 B 9 6 0 0 0 0 0 0 0 0 0 0 2 F 0 2 1 3 8 8 0 0 0 1 E 6 A F $
7E 32 36 30 30 34 36 30 30 33 30 37 36 30 30 30 31 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 30 38 35 33 30 38 35 33 30 38 35 33 30 38 35 33 30 42 41 44 30 42 39 36 30 30 30 30 30 30 30 30 30 30 32 46 30 32 31 33 38 38 30 30 30 31 45 36 41 46 0D
log image：

Software image：

BMS photo：

Esphome image：

[syssi]

I will have a look! Could you explain why there are no cell voltages in all screenshots?

[syssi]

I've pushed a small change to a feature branch. Please update the external components section at your YAML to:

external_components:
  - source: github://syssi/esphome-seplos-bms@boqiang-support
    refresh: 0s

This will pull and compile the feature branch. Please give it a try!

[syssi]

I've introduced a breaking change. Please update the seplos_bms section of your YAML:

seplos_bms:
  id: bms0
  # Dip switch configuration of a single pack setup / address 0x0
  #  8    7    6    5    4    3    2    1
  # off, off, off, off, off, off, off, off
  address: 0x00
  # Known protocol versions: 0x20 (Seplos), 0x26 (Boqiang)
  protocol_version: 0x26
  override_pack: 1
  seplos_modbus_id: modbus0
  update_interval: 10s

I've introduced a new setting called override_pack to respect the peculiarity of your device / protocol version.

[syssi]

I will merge the feature branch today to support the BMS001 and BMS007 officially.

[syssi]

Could you provide the BMS001 response of the ~260046510000FDA8\r request?

[syssi]

I've merged the feature into main. Please update the external components section back to @main.

[xdilian]

Wow, you are amazing, I tried to use the serial port debugging tool to test, the following is the result returned by BMS001，I hope it is useful to you, if the data is not correct, please tell me what I should do.

sent：
~260046510000FDA8\r
return：
~260046057072303146303030303030303030303030303030303030303030303030303030303030363833383338333833423642343030303030303243383035E731

[syssi]

Thanks for the DataRecord_20230311_010145.xls. This recordings will help a lot in future to get an idea of the behaviour of your BMS / protocol version.

[syssi]

@xdilian You did the DataRecord_20230311_010145.xls recording using the Seplos protocol version 2.0 application, correct? Could you do the same recording using the chinese application supporting protocol version 2.6? I would like to see the difference.