g40g80g90g54; m03s600; g00x0y0;g00z5; g01z0f100; #1=0;#2=-30; while[#1 GT #2]D1; #1=#1-0.2; g01x-30z#1f100;g01x30f100;if [#1 LE #2] then #1=#2;END1;g00z100;m30;这个程序有错没?