Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Instrukcja Użytkownika Pobierz pdf (Strona 293)

Introduction to Programming

Example 10.8

Subprogram Calls and Returns (continued)

The following path of execution results when the main program above is

selected as the active program.

(MAIN PROGRAM);

N00030M98P1;

(SUBPROGRAM 1);

N00060M98P2L2;

(SUBPROGRAM 2);

N00220...M99;

(SUBPROGRAM 2);

N00220...M99;

We use nesting as the term to describe one program calling another. The

program called is said to be a nested program. When you call a

subprogram from the main program, i t is said to be on the first nesting

level or nesting level 1. If that subprogram in turn calls another

subprogram , the called subprogram is said to be in nesting level 2.

Subprograms can be nested up to a maximum of 4 levels.

Subprogram Nesting

Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Instrukcja Użytkownika Strona 293