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ABB Error 20313 — IOC EN supervision fault

Error

ABB 20313 (“IOC EN supervision fault”): IOC EN supervision fault: the supervision of the ENABLE signal of the I/O computer detects a break in the ENABLE path. Likely part: IO Computer / Panel Board / Connector Board.

Updated 2026-10-22 · LogrobotLM reference

What it means

IOC EN supervision fault: the supervision of the ENABLE signal of the I/O computer detects a break in the ENABLE path. The system goes to SYS HALT.

What to check

  • Read the other log messages to find the actual cause of the stop.
  • Check the cables between the Panel Board and the IO Computer.
  • If necessary, replace the IO Computer, the Panel Board or the Connector Board.
  • Note: Cited in the Legend tab as a typical Enable Chain fault. Direct complement of 20314 (axis computer side).

Part to check / replace

ABB 20313 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

20206General stop open20223Emergency stop conflict20314AXC EN supervision 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 →