FANUC Alarm PRIO-197 — AB-RIO Slot … Idle
Manufacturer wording — AB-RIO Slot %d Idle
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PRIO-197 (“AB-RIO Slot … Idle”): The I/O connection associated with this slot is not actively exchanging I/O. First check: Check the wiring, baud rate, and PLC configuration.
Updated 2026-09-17 · LogrobotLM reference
Description
The I/O connection associated with this slot is not actively exchanging I/O. Note that the alarm severity (STOP or WARN) is affected by the error severity setting on the AB-RIO configuration screen. The last state setting on this screen affects the state of the inputs.
Remedy
Check the wiring, baud rate, and PLC configuration.
Related codes
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 →