#!/usr/bin/env python import epics import time # config darkPV = epics.PV('SLAAR03-LTIM-PDLY:DARKSHOT.PROC') normalPV = epics.PV('SLAAR03-LTIM-PDLY:NORMAL.PROC') while True: time.sleep(20) darkPV.put(1) print('dark') time.sleep(20) normalPV.put(1) print('light')