FANUC Alarm SSPC-116 — SERVO Invalid hand num(ST,G:…,UT:…)
Manufacturer wording — SERVO Invalid hand num(ST,G:%d,UT:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SSPC-116 (“SERVO Invalid hand num(ST,G:…,UT:…)”): The hand number related to the current tool number is invalid. First check: Confirm the hand number.
Updated 2026-09-17 · LogrobotLM reference
Description
The hand number related to the current tool number is invalid.
Remedy
Confirm the hand number.
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 →