import pprint
import time

from pyS7 import S7Client

LOOPS = 3
counter = 0
client = S7Client(address="172.16.3.231", rack=0, slot=2)
while counter < LOOPS:
    try:
        client.connect()
        tags = ["DB9,DBD0"]
        data = client.read(tags=tags)
        print(data)
    except Exception as e:
        pprint.pprint(e)
    finally:
        client.disconnect()
    counter += 1
    time.sleep(1)