Epever Mppt Controller Full Modbus Register 36937: MPPT LC: #1 Turn on time 2 (m)

Technical Definition

The register MPPT LC: #1 Turn on time 2 (m) at address 36937 is used to monitor mppt lc: #1 turn on time 2 (m) on the Epever Mppt Controller Full.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit: min
• 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 LC: #1 Turn on time 2 (m) (Address: 36937)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=36937, 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 LC: #1 Turn on time 2 (m)"
  address: 36937
  value_type: U_WORD
  unit_of_measurement: "min"

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: Sets the ON delay in minutes for a second operational event. Unit: Minutes.

Troubleshooting: Zero value means instant activation or bypass. Confirm timer duration and associated event conditions.