FANUC Alarm CPMO-083 — EXT JBF len mismatch
Manufacturer wording — EXT JBF len mismatch (G:%d^2)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC CPMO-083 (“EXT JBF len mismatch”): An Internal INTR error has occurred. First check: The system might have been corrupted.
Updated 2026-09-17 · LogrobotLM reference
Description
An Internal INTR error has occurred. This class of error should not be encountered during normal operation.
Remedy
The system might have been corrupted. This might have been caused by any of a number of reasons including: Incorrect loading and setup loading incompatible options, mixing software version when adding options and other
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →