My Inverter%206 2Kw Jk Bms%20V15 V19 Modbus Register 4545: Inverter name Back To Battery Source Voltage

Technical Definition

The register inverter name Back To Battery Source Voltage at address 4545 is used to monitor inverter name back to battery source voltage on the My Inverter%206 2Kw Jk Bms%20V15 V19.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit: V
• Access: Read Only

How to Read (Python pymodbus)

Use this code snippet to read this specific value via RS485:

from pymodbus.client.sync import ModbusSerialClient

client = ModbusSerialClient(method='rtu', port='/dev/ttyUSB0', baudrate=9600)
client.connect()

# Read inverter_name Back To Battery Source Voltage (Address: 4545)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4545, count=2, unit=1)

if not result.isError():
    print(f"Raw Value: {result.registers}")
else:
    print("Error reading register")

client.close()

Integration (Home Assistant)

Paste this into your configuration.yaml:

- platform: modbus_controller
  name: "inverter_name Back To Battery Source Voltage"
  address: 4545
  value_type: U_WORD
  unit_of_measurement: "V"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[My Inverter%206 2Kw Jk Bms%20V15 V19]

    PLC -- "A+ (D+)" --> Device
    PLC -- "B- (D-)" --> Device
    PLC -- GND --> Device

💡 Engineer's Insight

Analysis: Voltage threshold at which the inverter will switch back to battery power. Measured in Volts (V).

Troubleshooting: Battery voltage has dropped below this threshold. Indicates low battery state or charging issue.