LogrobotLM

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FANUC Alarm PRIO-156 — STOP CNET Er … Bd … MAC …

Manufacturer wording — STOP CNET Er %s Bd %d MAC %d
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PRIO-156 (“STOP CNET Er … Bd … MAC …”): The connection for the device Mac listed encountered an error. First check: Refer to cause code if listed.

Updated 2026-09-17 · LogrobotLM reference

Description

The connection for the device Mac listed encountered an error. The Er number is the ControlNet error code.

Remedy

Refer to cause code if listed. If not, refer to the ControlNet error code in the System manual or the ControlNet specification

Related codes

PRIO-154STOP CNET Duplicate Mac ID Bd …PRIO-155STOP CNET Network Error Bd …PRIO-157STOP CNET Err Loading BIN file Bd …PRIO-158WARN CNET File Not Found

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 →