LogrobotLM

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FANUC Alarm MHND-135 — WARN Could not read …

Manufacturer wording — WARN Could not read %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC MHND-135 (“WARN Could not read …”): Could not read the.dt file - Data error. First check: Check the communication status.

Updated 2026-09-17 · LogrobotLM reference

Description

Could not read the.dt file - Data error.

Remedy

Check the communication status.

Related codes

MHND-133WARN Error using CLEAR built-inMHND-134WARN File is in use by robot. Cannot transferMHND-136WARN Could not clear fileMHND-137WARN.VR file has not been created

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 →