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FANUC Alarm SPOT-121 — PAUSE Undefined Pressure (EP=*)-gun 1

FANUC SPOT-121 (“PAUSE Undefined Pressure (EP=*)-gun 1”): Undefined pressure (EP=*) A EP=* was encountered in the teach pendant program, but no previous pressure value has been used. First check: Be sure to include a direct equalization pressure value instead of using the *.

Updated 2026-09-17 · LogrobotLM reference

Description

Undefined pressure (EP=*) A EP=* was encountered in the teach pendant program, but no previous pressure value has been used.

Remedy

Be sure to include a direct equalization pressure value instead of using the *.

Related codes

SPOT-104PAUSE Backup close fault …-gun 1SPOT-120PAUSE Bad Pressure (EP=…)-gun 1SPOT-141PAUSE Backup not closed-gun 2SPOT-143PAUSE Water saver OK fault-gun 2

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 →