Device Jkpb0116 Modbus Register 4680: Name bms name max voltage cell number

Technical Definition

The register name bms name max voltage cell number at address 4680 is used to monitor name bms name max voltage cell number on the Device Jkpb0116.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit:
• 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 name_bms_name_max_voltage_cell_number (Address: 4680)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4680, 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: "name_bms_name_max_voltage_cell_number"
  address: 4680
  value_type: U_WORD
  unit_of_measurement: ""

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Device Jkpb0116]

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

💡 Engineer's Insight

Analysis: Max voltage cell number. Identifies the cell with the highest voltage within the battery pack. Crucial for monitoring cell health and balancing.

Troubleshooting: Zero or unexpected number may indicate sensor failure or BMS communication issue. Review cell voltage readings for confirmation.