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3 M Code
NJ/NY-series G code Instructions Reference Manual (O031)
M99 Sub
p
rog
ram End
3
M99 Subprogram End
The M99 is a function to return the execution control from the program currently running to the other
program from which the current program was called.
The M99 function behaves differently between when a subprogram is called by a subprogram and
when it is called by a main program.
When the subprogram is called from a subprogram, it returns execution control to the main program
from which the subprogram was called (M98).
When the subprogram is executed by the main program, it terminates the program by executing M30.
Instruction format M99
Relevant M codes M98