RS485

import serial

port = serial.Serial('COM5')
port.baudrate = 9600  # Set Baud rate to 9600
port.bytesize = 8  # Number of data bits = 8
port.parity = serial.PARITY_EVEN
port.stopbits = 1  # Number of Stop bits = 1

if port.is_open:
    print("Success")
    len_return_data = port.inWaiting()
    print(len_return_data)
    return_data = port.read(len_return_data)
    str_return_data = str(return_data.hex())
    feedback_data = int(str_return_data[-6:-2], 16)
    print(feedback_data)
else:
    print("Fail")