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ABB Error 38034 — Axis Computer / SMB / Serial measurement cable fault

Error

ABB 38034 (“Axis Computer / SMB / Serial measurement cable fault”): Transmission failure: the Axis Computer detects a communication failure with the serial measurement system (SMB). Likely part: Axis Computer / SMB / Câble de mesure série (Axis Computer / SMB / Câble de mesure série) +1 more.

Updated 2026-10-22 · LogrobotLM reference

What it means

Transmission failure: the Axis Computer detects a communication failure with the serial measurement system (SMB). Typical causes: measurement cable, shielding, SMB power supply, SMB or Axis Computer board.

What to check

  • Check connections and shielding; measure the SMB power supply; inspect/replace first the robot-to-controller measurement cable, then the SMB and finally the Axis Computer board if necessary.
  • Note: Very useful for distinguishing a measurement link failure from a motor failure. The robot-to-controller cable and the SMB are the prime suspects.

Part to check / replace

ABB 38034 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

20032Revolution counter not updated20033Axis not synchronized38100SMB / measurement system fault

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 →