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akshaybaweja/MiniPowerReaderModbus.py

Forked from dotmat/MiniPowerReaderModbus.py
Created November 7, 2021 01:13
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  1. @dotmat dotmat created this gist Jan 15, 2020.
    33 changes: 33 additions & 0 deletions MiniPowerReaderModbus.py
    View file
    Original file line number Diff line number Diff line change
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    #!/usr/bin/env python3
    import minimalmodbus
    import serial

    powerMeter = minimalmodbus.Instrument('/dev/ttyUSB0', 1)
    powerMeter.serial.baudrate = 9600
    powerMeter.serial.bytesize = 8
    powerMeter.serial.parity = serial.PARITY_NONE
    powerMeter.serial.stopbits = 1
    powerMeter.mode = minimalmodbus.MODE_RTU

    # Print the details of the power meter here, these also include the config needed to talk to the unit.
    print('Details of the power meter are:')
    print(powerMeter)


    def readPowerMeter():
    print("Attempting to read power meter")
    try:
    voltageReading = powerMeter.read_register(0, 0, 4)
    ampsReading = powerMeter.read_register(1, 0, 4)
    wattsReading = powerMeter.read_register(3, 0, 4)
    frequencyReading = powerMeter.read_register(7, 0, 4)
    print("Voltage", voltageReading/10)
    print("Amps", ampsReading/10)
    print("Watts", wattsReading/10)
    print("Frequency", frequencyReading/10)
    except IOError:
    print("Failed to read from instrument")

    # Run the function to read the power meter.
    readPowerMeter()