Extend the modbus example

[manuelmarin1967]

hello is it possible to get the modbus protocol of the new jk pb, especially the addresses of the battery voltage, current, soc, battery capacity and all the other addresses that are missing in the yaml, as there are only the addresses of the individual voltages of the cells and the resistors of each one.
It would be a great help as I want to continue to expand my yaml with the rest of the missing addresses.
If you could post the complete addressing protocol it would be ideal for me.
Thanks in advance and keep up the great work you are doing.

[syssi]

These are all details I'm aware of: https://github.com/syssi/esphome-jk-bms/tree/main/docs/pb2a16s20p

If you make some progress please share your enhancements!

[lucize]

@manuelmarin1967
I have some readings with errors and I added some filters but please see this example:
@syssi aren't they useful to be added by default ?

  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "BMS total voltage"
    address: 0x1290
    register_type: holding
    value_type: U_DWORD
    unit_of_measurement: "V"
    device_class: voltage
    state_class: measurement
    accuracy_decimals: 3
    filters:
      - multiply: 0.001
      - filter_out: -1
    lambda: |-
      if (x <= 60000) {
        return x;
      } else {
        // Return NAN to indicate invalid value
        return NAN;
      }

  # 0x1294   148   UINT32    4    R    BatWatt         mW
  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "BMS battery watt"
    address: 0x1294
    register_type: holding
    value_type: U_DWORD
    unit_of_measurement: "W"
    state_class: measurement
    accuracy_decimals: 3
    filters:
      - multiply: 0.001
    icon: "mdi:battery-charging"
  # 0x1298   152    INT32    4    R    BatCurrent      mA
  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "BMS battery current"
    address: 0x1298
    register_type: holding
    unit_of_measurement: "A"
    state_class: "measurement"
    accuracy_decimals: 3
    filters:
      - multiply: 0.001
    lambda: |-
      if (x <= 180000) {
        return x;
      } else {
        // Return NAN to indicate invalid value
        return NAN;
      }
    value_type: S_DWORD
    icon: "mdi:current-dc"
  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "BMS SOCStateOfcharge"
    address: 0x12A6
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "%"
    accuracy_decimals: 0
    lambda: |-
      auto h = data[1];
      uint8_t soc_state_of_charge = h & 0xFF;
      // Return SOCStateOfCharge only if it's less than or equal to 100
      if (soc_state_of_charge <= 100) {
        return soc_state_of_charge;
      } else {
        // Return NAN to indicate invalid value
        return NAN;
      }

  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "BMS SOC Cycle Count"
    address: 0x12B0
    register_type: holding
    value_type: U_DWORD
    state_class: measurement
    accuracy_decimals: 0
    lambda: |-
      if (x <= 6000) {
        return x;
      } else {
        // Return NAN to indicate invalid value
        return NAN;
      }
  - platform: modbus_controller
    modbus_controller_id: bms0
    name: "BMS SOCStateOfHealt"
    address: 0x12B8
    register_type: holding
    value_type: U_WORD
    unit_of_measurement: "%"
    accuracy_decimals: 0
    lambda: |-
      auto h = data[0];
       uint8_t soc_state_of_charge = h & 0xFF;
      // Return SOCStateOfCharge only if it's less than or equal to 100
      if (soc_state_of_charge <= 100) {
        return soc_state_of_charge;
      } else {
        // Return NAN to indicate invalid value
        return NAN;
      }

[bearpawmaxim]

Hello @manuelmarin1967 !
I have more complete example here
https://github.com/bearpawmaxim/esphome-configs/blob/master/battery-controller/jkbms-modbus.yaml

@syssi
I can not make the charge/discharge switches to work. (device disconnects if I'm trying to send something). Using the code from your example for the switches.
Any ideas?