Jk Rs485 Bms11 Modbus Register 4196: Bms11 MOS high Temperature protection

Technical Definition

The register bms11 MOS high Temperature protection at address 4196 is used to monitor bms11 mos high Temperature protection on the Jk Rs485 Bms11.

• Protocol: Modbus RTU
• Data Type: U DWORD
• Unit: °C
• 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 bms11 MOS high temperature protection (Address: 4196)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4196, 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: "bms11 MOS high temperature protection"
  address: 4196
  value_type: U_DWORD
  unit_of_measurement: "°C"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Jk Rs485 Bms11]

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

💡 Engineer's Insight

Analysis: Indicates protection due to overheating of the MOS (Metal-Oxide-Semiconductor) components. Units are typically a status code (e.g., 0=OK, 1=Active).

Troubleshooting: Verify cooling efficiency for MOS. Check for excessive current draw or load conditions.