I have problem with program on OKK
I try to make a warming up program for my machine
O1
N1G0G90X-100.Y-100.Z-100.;
N2G28X0Y0Z0;
N3M99;
%
but after read the line 3, the program can't rewind to the first line..
anyone can help my problem? or something that I miss on the program?