PROGRAMMING12. 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 1Ȁ
Instruction 2Ȁ
Instruction n+1
Return to the main program
Fig. 12 (a) Main program and subprogram
The CNC memory can hold up to 400 main programs and subprograms.
A main program can be selected from the stored main programs to operate
the machine. See III–9.3 or III–10 in OPERATION for the methods of
registering and selecting programs.
General
D Main program and
subprogram