KUKA Error 106 — RDW / buffer batteries / measuring chain
InfoDisplayed as KSS00106 on KRC4 / KRC5 controllers
KUKA 106 (“RDW / buffer batteries / measuring chain”): All axes have lost their mastering: the position counters have been erased — buffer batteries discharged, RDW power interruption, or X21 cable unplugged while under power. Likely part: RDW (RDW resolver-to-digital converter board) +1 more.
Updated 2026-09-09 · LogrobotLM reference
Cause
All axes have lost their mastering: the position counters have been erased — buffer batteries discharged, RDW power interruption, or X21 cable unplugged while under power. Often appears just after a generalized error 102.
Part to check / replace
KUKA 106 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 →