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Pipfile (177, 2021-01-31)
Pipfile.lock (12545, 2021-01-31)
dds238 (0, 2021-01-31)
dds238\__init__.py (2661, 2021-01-31)
setup.py (984, 2021-01-31)

# python-dds238 This library is very useful when reading the chinese DDS238 (and its variants: DDS238-2, ...) power meter. This library supposes that you're using an USB-to-RS485 dongle. It doesn't work yet for modbus-over-TCP (though if you want to propose an MR, i'd accept it gladly !). # Installation To install the library, simply type: ``` $ pip3 install python-dds238 ``` # Usage I'ts very simple: ```python3 >>> from dds238 import DDS238 >>> meter = DDS238(modbus_device='/dev/ttyUSB0', meter_id=20) >>> meter.voltage 215.4 >>> meter.power 1632 >>> meter.export_energy 1288.2 ``` # DOC ``` | current | Returns the current in Amperes | | export_energy | Returns the exported energy, in kWh | | frequency | Returns the frequency in Herz | | import_energy | Returns the imported energy, in kWh | | power | Returns the power in Watts. Positive is import. Negative power is exported | | power_factor | Returns the power factor (0-1 scalar) | | reactive_power | Return the reactive power in VAr | | voltage | Returns the voltage in Volts | | ---------------------------------------------------------------------- | | change_address(self, address: int, baudrate=9600) | Change the modbus address and the baudrate of the current device. USE AT YOUR OWN RISK ! ``` # Baudrate reset In the case that you ***up the meter's baudrate, you can reset it to 9600 by going to the baudrate menu and holding down the select button. Once the display shows `- Clr -` you must cut off the power to the meter (while holding the button). The meter will reset to `9600` Bd. You can reach a single meter on a bus by using id `0`.

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