Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 294)

Introduction to Programming
Chapter 10
10-16
Figure 10.3
Subprogram Nesting
Main
program Sub-
program 1 Sub-
program 2 Sub-
program 3 Sub-
program 4
Level 1 Level 2 Level 3 Level 4
M02;p M99; M99; M99; M99;
M98P11111;
M98P22222;
M98P33333;
M98P44444;
0 00001; 0 11111; 0 22222; 0 33333; 0 44444;
12015-I
Important: Calling a macro (see chapter 20) does not add to the nesting
level of any active subprograms. Up to 4 subprograms can still be nested
though the combined total of nested macros and subprograms cannot
exceed 8.