Epever Mppt Controller Full Modbus Register 36890: MPPT SET: Controller inner Temperature upper limit recover

Technical Definition

The register MPPT SET: Controller inner Temperature upper limit recover at address 36890 is used to monitor mppt set: controller inner Temperature upper limit recover on the Epever Mppt Controller Full.

• Protocol: Modbus RTU
• Data Type: S WORD
• 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 MPPT SET: Controller inner temperature upper limit recover (Address: 36890)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=36890, 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: "MPPT SET: Controller inner temperature upper limit recover"
  address: 36890
  value_type: S_WORD
  unit_of_measurement: "°C"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Epever Mppt Controller Full]

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

💡 Engineer's Insight

Analysis: Defines the internal controller Temperature threshold (degrees Celsius) at which a high-Temperature warning condition is cleared.

Troubleshooting: Typically linked to register 36889. If it stays high, the underlying cause of overheating persists.