FANUC Alarm CPMO-139 — Can't maintain CRval L:…
Manufacturer wording — Can't maintain CRval L:%d^5
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC CPMO-139 (“Can't maintain CRval L:…”): The specified CR value was too big to achieve since the actual CR value is limited by either CNT100 corner path or half-distance of involved segments. First check: Use a higher programmed speed, or use ACCxx, xx<100.
Updated 2026-09-17 · LogrobotLM reference
Description
The specified CR value was too big to achieve since the actual CR value is limited by either CNT100 corner path or half-distance of involved segments. This is only a warning message.
Remedy
Use a higher programmed speed, or use ACCxx, xx<100.
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 →