ES12248

Driver for the ES12248 Modbus RTU temperature and humidity sensor.

Provides a thin Modbus RTU client wrapper around the ES12248 industrial temperature and humidity transmitter. The driver opens a serial connection to the sensor’s RS-485 interface, reads scaled integer measurements from holding registers, and exposes them as floating-point physical values.

Temperature is read from holding register 0 and humidity from holding register 1. Both registers contain value * 100 as a 16-bit integer, so the driver divides by 100.0 to recover degrees Celsius and relative humidity in percent. Each register read is retried up to three times with a short back-off, and the last successfully decoded value is cached so callers can fall back to it if a parse error occurs.

Hardware:

  • Interface: Modbus RTU over RS-485 (UART)

  • Default port: /dev/ttyAMA2

  • Default baud rate: 9600

  • Default slave ID: 1

  • Registers: 0 = temperature (x100), 1 = humidity (x100)

Example

>>> from drivers.ES12248.ES12248 import ES12248
>>> sensor = ES12248()
>>> sensor.initialize(port="/dev/ttyAMA2", baud=9600, slave_id=1)
>>> temperature = sensor.get_temperature()
>>> humidity = sensor.get_humidity()
>>> sensor.close()

Note

Requires pymodbus (ModbusSerialClient) for Modbus RTU framing and utils.oizom_logger.OizomLogger for structured logging. Although the project hosts a common base in SensorBase.SensorBase.GenericSensor, this driver is currently a standalone class and does not inherit from it; the public method names (initialize, get_temperature, get_humidity, close) follow the same convention so it can be used interchangeably wherever that interface is expected.

Attributes

basic_logger

context_logger

sensor

Classes

ES12248

Modbus RTU driver for the ES12248 temperature and humidity sensor.

Module Contents

ES12248.basic_logger
ES12248.context_logger
ES12248.sensor