LinuxCNC G-Code Differences vs Fanuc: The Honest Map
LinuxCNC and Fanuc share the standard core and split on structure: O-words vs Macro B, dot-one extensions, G10 table writing, and per-dialect cycle details.
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LinuxCNC and Fanuc share the standard core and split on structure: O-words vs Macro B, dot-one extensions, G10 table writing, and per-dialect cycle details.
LNC controls run a Fanuc-shaped G-code dialect: the universal core is safe to trust, while cycles and builder M-codes belong to your machine's manual.
M29 S___ arms rigid tapping mode on Fanuc controls: the spindle and Z axis lock into sync before G84 runs. What it changes, the sequence, and the failure.
Mach3 and Fanuc share the standard core and diverge where dialects always do: cycles' fine print, macros, M-code ownership, and the strictness culture.
Mach4 is a ground-up rewrite of Mach3, but the G-code syntax stayed standard-shaped. What changed is the architecture, scripting, and plugins, not the language.
No single app does machinist math and G-code lookup well, and the lookup half is the wrong goal anyway. The pocket stack that covers both, free.
The machinist wallpaper carries numbers, not codes: the two cutting formulas, tap-drill pairs you actually use, and decimal equivalents, sized for a glance.
Marlin G-code and CNC G-code share a skeleton and split into ecosystems: temperatures and extrusion on one side, spindles, offsets, and cycles on the other.
Mastercam posts wrong G-code when the machine definition, control definition, and post do not match your actual machine. The triad, and the fix order.
No single character limit covers Fanuc G-code lines: block length is bounded per control, and the lines that actually break things are long CAM comments.
Night-shift troubleshooting is daytime troubleshooting plus a boundary question: what is safely yours to fix alone, what waits, and how to decide fast.
An O number names a whole program or subprogram; an N number labels a line inside it. One is the file's title, the other is its page numbers. The distinction.