import time
import PyCafe

cafe = PyCafe.CyCafe()


cafe.monitor("MMAC3:STR:2")

pvd = cafe.getPVCache("MMAC3:STR:2")
pvd.show()

for i in range(0,1000000):
    pvd = cafe.getPVCache("MMAC3:STR:2")
    if pvd.value[0] < 0.003:
        pvd.show()
    time.sleep(0.25)