FANUC Alarm MOTN-154 — PM: I/O data error (L:…)
Manufacturer wording — PM: I/O data error (L:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC MOTN-154 (“PM: I/O data error (L:…)”): The data cannot be output. First check: The I/O data in ibgn.txt might be different from that in SENSPS.txt.
Updated 2026-09-17 · LogrobotLM reference
Description
The data cannot be output.
Remedy
The I/O data in ibgn.txt might be different from that in SENSPS.txt. Check the I/O data in SENSPS.txt and make sure that it matches igbn.txt.
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 →