LogrobotLM

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FANUC Alarm FRCE-271 — Invalid teaching (F:…)

Manufacturer wording — Invalid teaching (F:%d^1)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC FRCE-271 (“Invalid teaching (F:…)”): The sign of the force command during torque error acquisition is different from the one during force control. First check: Reverse the sign of 'Insert Force' in Basic Data, or execute the torque error acquisition again.

Updated 2026-09-17 · LogrobotLM reference

Description

The sign of the force command during torque error acquisition is different from the one during force control.

Remedy

Reverse the sign of 'Insert Force' in Basic Data, or execute the torque error acquisition again.

Related codes

FRCE-269Insert direction error (F:…)FRCE-270Insert length error (F:…)FRCE-272Invalid torque data is set (F:…)FRCE-273Setting end cond. failed (F:…)

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 →