ABB Error 39412 — Axis Computer / Drive Unit fault
ErrorABB 39412 (“Axis Computer / Drive Unit fault”): Too many missed communication reference updates for a joint. Likely part: Axis Computer / Drive Unit (Axis Computer / Drive Unit).
Updated 2026-10-22 · LogrobotLM reference
What it means
Too many missed communication reference updates for a joint.
What to check
- Check the communication link between the Axis Computer and the Drive Unit, grounding and electromagnetic interference.
- Note: Real-time communication fault that may originate from cabling, grounding or EMC.
Part to check / replace
ABB 39412 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Same hardware involved
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 →