import time
import snap7
from snap7.util.getters import get_lreal, get_dint
import pprint

LOOPS = 20
counter = 0
while counter < LOOPS:
    try:
        plc = snap7.client.Client()
        plc.connect("172.16.3.231", 0, 2)
        # pprint.pprint(plc.get_cpu_state())
        data = plc.db_read(9, 0, 4)  # Define range of bytes to read
        energy_value = get_dint(data, 0)  # Read energy value
        pprint.pprint(energy_value)
    except Exception as e:
        pprint.pprint(e)
    finally:
        plc.disconnect()
    counter += 1
    time.sleep(3)