FANUC Alarm PNT1-387 — Master program is undefined

Manufacturer wording — %sMaster program is undefined
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PNT1-387 (“Master program is undefined”): Robot master program is not taught. First check: Teach robot master program (MASTER.TP).

Updated 2026-09-17 · LogrobotLM reference

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 →