13. Program Support Functions
13.1 Fixed Cycles
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13.1.3 Initial Point and R Point Level Return; G98, G99
Function and purpose
Whether to use R point or initial level for the return level in the final sequence of the canned cycle
can be selected.
Command format
G98 ;
G99 ;
G98 ; Initial level return
G99 ; R point level return
Detailed description
The relation of the G98/G99 mode and No. of repetition designation is as shown below.
No. of hole
drilling
Program
example
G98
At power ON, at cancel
with M02, M30, and reset
button
G99
Only one
execution
G81X100.
Y100.
Z
−
50.
R25.
F1000;
Initial point
R point
Initial level return is executed.
Initial point
R point
R point level return is executed.
Second and
following
executions
G81X100.
Y100.
Z
−
50.
R25.
L5F1000;
Second
time
Final
time
First
time
Initial level return is executed for all
times.
Second
time
Final time
(Note)
First
time
(Note)
The final return position will be different between label O and L when drilling is executed
more than twice with G99 command.
Label O... R point return
Label L... Initial point return
With label L, R point return can be selected by setting "#1246 set18/bit3 Change final
return position at M2L"
