Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 285)

Introduction to Programming
Chapter 10
10-11
The control considers a “/” without a number to mean “/1”. However, “/1”
must be programmed if more than one block delete number is to be used in
a block.
The block delete is active for sequence number search and dry run
operations.
The control ignores the block delete when loading a part program from
tape or other device into control memory. The control also ignores the
block delete when a part program is saved on punched tape or other device
from control memory.
For details on the block delete switch(s), see your PAL reference manual
and the documentation prepared by the system installer.
All program blocks must have an end of block statement (EOB) as the last
character in the block. This character tells the control how to separate data
into blocks. The control uses the “;” to mark the end of a block.
Important: When performing an EOB search, the search is executed from
the beginning of the part program, NOT from the point of display.
To specify an end of block character “;” use the [EOB] key on the operator
panel.
For programs created offline, a linefeed designates EOB.
10.2.5
End of Block Statement