Guides
CNC Machine Stuck on M30, Won't Rewind: The Five Causes
M30 means end and rewind, so a machine stuck there has a file-format or mode problem: missing EOB, missing percent marker, DNC streaming, or a setting.
Lawrence Arya··4 min
Guides
Fanuc End of Block (EOB) Semicolon Missing Error, Explained
The semicolon on a Fanuc screen is the EOB display character, not a comment. Missing-EOB errors are line-ending problems, made in PC editors and transfers.
Lawrence Arya··4 min
Guides
How to Add Comments in G-Code: Parentheses, Semicolons, Rules
G-code comments come in two styles: parentheses mid-line and semicolon-to-end-of-line, with dialect rules, no nesting, and a few traps worth knowing.
Lawrence Arya··4 min
Guides
Max Characters Per Line in Fanuc G-Code: The Real Limits
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.
Lawrence Arya··4 min
Guides
Why Is There a Percent Sign at the Top of My G-Code?
The percent sign is a tape-era file marker: it told the reader where the program began and ended. Controls still honor it, and its absence still bites.
Lawrence Arya··4 min