Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 650)

Milling Fixed Cycles
Chapter 26
26-18
The format for the G80 cancel or end fixed cycles is as follows:
G80;
Programming a G80 cancels the currently active milling fixed cycle mode.
(G00, G01, G02, or G03 will also cancel any active milling fixed cycle.)
If milling fixed cycles are canceled with a G80, program execution returns
to the mode which was in effect when the cycles were last turned on, for
example, G00 - G03.
The format for the G81 cycle is as follows:
G81X__Y__Z__R__F__L__;
Where : Is :
X,Y specifies location of the hole.
Z defines the hole bottom.
R defines the R point level.
F defines the cutting feedrate.
L defines the number of times the milling fixed cycle is repeated.
(See section 26.3 for a detailed description of these parameters.)
Important: The programmer or operator must start spindle rotation.
(G80): Cancel or End Fixed
Cycles
(G81): Drilling Cycle, No
Dwell/Rapid Out