
PROGRAMMING
B–63444EN/01
12. PROGRAM CONFIGURATION
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12
PROGRAM CONFIGURATION
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.
Follow the direction of the
subprogram
Main program
Subprogram
Instruction 1
Instruction 2
Instruction n
Instruction 1’
Instruction 2’
Instruction n+1
Return to the main program
Fig.12 (a) Main program and Subprogram
The CNC memory can hold up to 63 main programs and subprograms.
A main program can be selected from the stored main programs to operate
the machine. See Chapter 10 in OPERATION for the methods of
registering and selecting programs.
General
D Main program and
subprogram