I use this every day with out any problems, you will have problems ie errors if the z1.0 in the first line is smaller than the r value in the second line
G43 Z1.0 H18 M08
G98 G83 Z-0.675 R0.1 Q0.1 F15.
what this does is rapids to 1" then rapids down to .1 before canned cycle , when canned cycle is finished it stops at .1, then rapids back to Z1.0 before changing location in x and y for next drill cycle.
you can have the 1st Z ie postition and the R the same, however you cant have the R larger than the Z move in the line above.
Hope that makes sence.