Esp Poe Mm V13 Rs Can Modbus Register 79: mod1value

Technical Definition

The register mod1value at address 79 is used to monitor mod1value on the Esp Poe Mm V13 Rs Can.

• Protocol: Modbus RTU
• Data Type: U WORD
• 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 mod1value (Address: 79)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=79, 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: "mod1value"
  address: 79
  value_type: U_WORD
  unit_of_measurement: ""

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Esp Poe Mm V13 Rs Can]

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

💡 Engineer's Insight

Analysis: General Modbus register value from ESP POE MM V13 RS CAN. Units are device-specific.

Troubleshooting: Check device status, communication errors, or register configuration if value is unexpected or absent.