Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 174)

Editing Part Programs Offline
Chapter 6
6-10
After selecting the Rename or Overwrite option, or if the file being
downloaded did not already exist on the control, the workstation displays
this screen:
F1 - File F2 - Project F3 - Application F4 - Utility F5 - Configuration
Proj: Demo Appl: Download Util: Send Part Program
Download In Progress
Percent completed 50%
The percentage of the download process that has currently been completed
is displayed on the screen. This value is updated continually throughout
the download process.
When you download a program to the control, the control does not display
a message to indicate that a download is taking place. If you download a
large program it may take several minutes for the control to complete the
download. You may want to go to the directory screen and monitor the
download. As the program downloads, the control updates the size of the
program.