The G82 cycle is intended for drilling.
0. Preliminary motion, as described above.
1. Move the Z-axis only at the current feed rate to the Z position.
2. Dwell for the given number of seconds.
3. Retract the Z-axis at traverse rate to clear Z. The motion of a G82 canned cycle looks just like g81 with the addition of a dwell at the bottom of the Z move. The length of the dwell is specified by a p# word in the g82 block.
G90 G82 G98 X4 Y5 Z1.5 R2.8 P2
Would be equivalent to example 2 above with a dwell added at the bottom of the hole.