LogrobotLM

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FANUC Alarm PRIO-102 — WARN Cycle power to restart PLC I/O

FANUC PRIO-102 (“WARN Cycle power to restart PLC I/O”): The PLC Interface hardware (A-B RIO or Genius Network PCB) is already running and can not be restarted without cycling power. First check: Turn off and then turn on the controller.

Updated 2026-09-17 · LogrobotLM reference

Description

The PLC Interface hardware (A-B RIO or Genius Network PCB) is already running and can not be restarted without cycling power.

Remedy

Turn off and then turn on the controller.

Related codes

PRIO-097SNPX time out<…>PRIO-100STOP Model B comm fault …rack:… slot:…PRIO-104STOP Device is off-linePRIO-106STOP Device with port is off-line

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 →