How to get charge and discharge status

[vpritulin]

Hi, I have charge and discharge enabled on my BMS, but in homeassistant they are marked as disabled.
How can I get their status so that they are shown as enabled?

[syssi]

Could you provide a log of your ESPHome node and the used YAML configuration?

[vpritulin]

@syssi thank you! This helped me to get the status of the discharge and discharge.
But I wanted to know about the status of balancing - is "BalanSta" the status of balancing or is it something else?

[syssi]

Could you give it a try and contribute your new findings?

[vpritulin]

I added in the yaml file

  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "status charge"
    address: 0x00C0
    register_type: holding
    value_type: U_WORD
    state_class: measurement

  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "status discharge"
    address: 0x00C1
    register_type: holding
    value_type: U_WORD
    state_class: measurement

and modified UI card

- type: markdown
            content: >-
              <center>Discharge:&nbsp;<b>{% if states('sensor.jk_bms_monitor_status_discharge') != '0' %} 
              <font color=#41CD52>{{ 'ON' | upper }}</font> 
              {% else %} 
              <font color=#ff0000>{{ 'OFF' | upper }}</font> 
              {% endif %}</b></center>
          
        - type: markdown
            content: >-
              <center>Discharge:&nbsp;<b>{% if states('sensor.jk_bms_monitor_status_discharge') != '0' %} 
              <font color=#41CD52>{{ 'ON' | upper }}</font> 
              {% else %} 
              <font color=#ff0000>{{ 'OFF' | upper }}</font> 
              {% endif %}</b></center>

and got the desired result

[syssi]

IMO your configuration isn't accurate. The value type U_WORD retrieves two bytes starting at register 0x00C0. You have two read the same register (0x00C0) in both sensors and use a bitmask to select the first or the second byte.

[vpritulin]

@syssi
do you mean that we need to do something like this?

lambda: |-
      // Extract the higher byte (for discharge status)
      return (int(x) >> 8) & 0xFF;

lambda: |-
      // Extract the lower byte (for charge status)
      return int(x) & 0xFF;