Jkbms Modbus Modbus Register 4796: JKBMS total runtime in seconds

Technical Definition

The register JKBMS total runtime in seconds at address 4796 is used to monitor jkbms total runtime in seconds on the Jkbms Modbus.

• Protocol: Modbus RTU
• Data Type: U DWORD
• 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 JKBMS total runtime in seconds (Address: 4796)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4796, 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: "JKBMS total runtime in seconds"
  address: 4796
  value_type: U_DWORD
  unit_of_measurement: ""

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Jkbms Modbus]

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

💡 Engineer's Insight

Analysis: Accumulated operational time of the battery in seconds. Unit: Seconds (s).

Troubleshooting: 0 indicates no operation or uninitialized timer. Significant increase expected during use. Check power and communication.