Total Charge Since Last Reset Modbus Register 30083: Entities name prefix - slave entities prefix name - Total Charge Since Last Reset

Technical Definition

The register entities name prefix - slave entities prefix name - Total Charge Since Last Reset at address 30083 is used to monitor entities name prefix - slave entities prefix name - total charge since last reset on the Total Charge Since Last Reset.

• Protocol: Modbus RTU
• Data Type: U DWORD
• Unit: Ah
• 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 entities_name_prefix - slave_entities_prefix_name - Total Charge Since Last Reset (Address: 30083)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=30083, 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: "entities_name_prefix - slave_entities_prefix_name - Total Charge Since Last Reset"
  address: 30083
  value_type: U_DWORD
  unit_of_measurement: "Ah"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Total Charge Since Last Reset]

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

💡 Engineer's Insight

Analysis: Accumulated electrical charge, typically in kilowatt-hours (kWh), delivered since the last reset. Tracks energy usage or generation.

Troubleshooting: Zero indicates no charge/discharge or a reset. Verify system operation, battery status, and if a reset event occurred.