二、 选择序列的分支与 M8002 SET SO 合并的编程方式 YO XO M8002 SET S21 So Y0 H SET S23 S21 3 S21 SET Y1 S23 Y3 S22 X4 Y2 X2 SET SO S23 Y2 Y3 X2 X4 SET S22 步进阶梯指令编程方式 RET 二、 选择序列的分支与 合并的编程方式 S0 S21 S23 Y0 M8002 X1 X2 Y2 X0 Y1 S23 X4 Y3 X3 SET S21 Y0 X0 S0 SET S22 Y1 X1 SET S0 Y2 X2 SET S22 Y3 X4 SET S0 M8002 S21 S22 S23 RET SET S23 X3 步进阶梯指令编程方式