¿Cómo controlar la bomba Longer WT600-2J(1J)(3J) mediante Python?

				
					### RUN PUMP 4 CLOCKWISE AT A ROTATING SPEED OF 320 RPM FOR 10s, THEN COUNTER−CLOCKWISE AT A ROTATING SPEED OF 50 RPM FOR 30s BEFORE STOPPING IT

# To use the pySerial package
import serial
# To use the time package
import time
# Open the serial port with the data format corresponding to the WT600-2J
ser = serial.Serial('COM6', 1200, parity=serial.PARITY_EVEN, bytesize=8, stopbits=1, timeout=None, xonxoff=0, rtscts=0)

# Run pump 4 clockwise at a rotating speed of 320 rpm for 10s
Data = bytearray(b'\xE9\x04\x06\x57\x4A\x01\x40\x01\x01\x5E') # corresponding control command string in hexadecimal; 320(dec) = 01 40(hex)

ser.write(Data) # Write the Data to the pump

Pumping_time = 10;
while Pumping_time > 0:
    print(Pumping_time)
    time.sleep(1)
    Pumping_time = Pumping_time - 1
end # 10s delay with a visible timer

# Run pump 4 counter-clockwise at a rotating speed of 50 rpm for 30s
Data = bytearray(b'\xE9\x04\x06\x57\x4A\x00\x32\x01\x00\x2C') # corresponding control command string in hexadecimal; 50(dec) = 00 32(hex)

ser.write(Data) # Write the Data to the pump

Pumping_time = 30;
while Pumping_time > 0:
    print(Pumping_time)
    time.sleep(1)
    Pumping_time = Pumping_time - 1
end # 30s delay with a visible timer

# Stop the pump
Data = bytearray(b'\xE9\x04\x06\x57\x4A\x00\x32\x00\x00\x2D') # corresponding control command string in hexadecimal: we took the previous command string and changed the State 1 byte from 01 (start pump) to 00 (stop pump) and of course computed the new fcs

ser.write(Data) # Write the Data to the pump