M98 and M99 are two of the most powerful and misunderstood commands in all CNC programming. They control subprogram calls, looping logic, automated machining sequences, pattern repetition, multi-fixture production, and parametric manufacturing. As 2025–2026 automation requirements continue to push CNC ...
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G65 vs M98: Macro Calls vs Subprograms in CNC Programming
cnccodeG65 vs M98: Macro Calls vs Subprograms in CNC Programming Both G65 and M98 are used to call external blocks of G-code, but they serve very different purposes. Understanding when and how to use each helps make your programs cleaner, ...