We have Siemens S7-200 PLCs at some machines. One of the machine was problematic and i had to download its original PLC program . Before downloading of PLC prog, the total counter reading (shown on touch screen) was 8,600,000 which changed to zero after downloading. I want to enter the previous counter value in PLC program but dont know the address of this integer. I have command in Allen Bradley where we open the data integer file and find the desired integer here but in Siemens, I dont have any experience to do that. Can any one help me how to achieve that goal?