Fanuc Series 15i/150i-MA (Programming) Operators Manual

12.PROGRAM CONFIGURATION PROGRAMMING B-63324EN/03
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12 PROGRAM CONFIGURATION
General
- Main program and subprogram
There are two program types, main program and subprogram.
Normally, the CNC operates according to the main program. However,
when a command calling a subprogram is encountered in the main
program, control is passed to the subprogram. When a command
specifying a return to the main program is encountered in a subprogram,
control is returned to the main program.
Fig.12 (a) Main program and Subprogram
The CNC memory can hold up to 400 main programs and subprograms
(100 as standard). A main program can be selected from the stored
main programs to operate the machine.
See II-8 in OPERATION for the methods of registering and selecting
programs.
Follow the direction of the
subprogram
Main program Subprogram
Instruction 1
Instruction 2
Instruction n
Instruction 1’
Instruction 2
Return to the main program
Instruction n+1

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