OK, running from "TAPE" mode is one way to run a large program. But somewhat balky. I prefer running from the PC card slot, I/O channel 4. Much easier.
You make each tool a "program" on the card, ie - Center drill is O0001, Drill, O0002, etc.
Then, On your CNC memory, you would write a main program -
%
O1000(MAIN 1)
M198 P1;
M198 P2;
etc.
M30;
Now, you can run LARGE programs without a balky RS 232 connection, plus MUCH easier program restart and re-run.
The G68 function would be in one of those programs with your angle tolerances inserted, and you can run.