| Error Message | Meaning | Fix | | :--- | :--- | :--- | | E-1001: Invalid address format | You typed X100 instead of X100.0 for a bit address. | Use dot notation for bits, no dot for words. | | E-2040: Subroutine stack overflow | Too many nested SUB 64 calls (max 8 levels). | Redesign logic; flatten subroutine hierarchy. | | E-5005: Connection refused (10061) | CNC is not listening on port 8193. | On CNC: SYSTEM > PMC > I/F > Embedded Ethernet > Enable . | | Cannot edit: PMC is in STOP mode | The CNC’s PMC is not executing logic. | Set PMC to RUN via CNC panel (safety key or soft key). | | Compile OK but symbols missing on CNC | You forgot to download the .CMT file. | Use PMC > Download > All (Ladder + Comments + Data). |
FANUC LADDER-III remains an essential tool for anyone serious about CNC maintenance. By mastering the software, you move beyond just "operating" a machine—you gain the ability to customize and repair its very soul. fanuc ladder iii 9.5
LADDER-III v9.5 cannot open very old PMC files (pre-2005) directly. Use the Conversion Tool to migrate from LADDER-II or old .LAD formats. | Error Message | Meaning | Fix |
Never perform Live Online Edits on a live production machine unless all personnel are clear of the motion envelope. | Redesign logic; flatten subroutine hierarchy