Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 762)

Section 15B
Replacement Procedures
15B-6
8. If error messages appear when you restart the control, perform the
appropriate recovery and then type y at the PC prompt.
Go on to step 9.
If no error messages appear, type n at the PC prompt. This screen
appears:
Reinsert disk A into drive A:
Strike any key when ready...
When you strike a key, the control update deletes the directory that it
created to install the update and returns to the drive prompt:
Removing scratch directory...
Update is complete
C:\>
9. When you choose to retry the update, this screen appears:
In order to download the system updates
the CNC and PC must first be connected.
Power down the CNC.
Connect RS-232 cable from CNC port B to PC port COM1
Then restart the CNC.
Press a key when ready...